Sanity Checking The National Climate Assessment Report Against Real Data Reveals Major Discrepancies

Guest essay by Dr. Don J. Easterbrook, Dept. of Geology, Western Washington University, Bellingham, WA

How well do claims and assertions in the just-released 800+-page report by the National Climate Assessment (NCA) stack up against unequivocal, real-time data? Let’s apply the scientific method, as outlined by Feynman, to the NCA report. We’ll first state each assertion made in the NCA report, then test it against real-time observation and data. The report begins with dire predictions based on computer models, so let’s start with that. Here is their assertion, based on the graph below. 

NCA assertion: “Temperatures are projected to rise another 2°F to 4°F in most areas of the United States over the next few decades.” “By the end of this century, a roughly 3°F to 5°F rise is projected under a lower emissions scenario, and a 5°F to 10°F rise for a higher emissions.”

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Figure 1. NCA temperature predictions

Facts: How do we check the validity of this prediction? Well, we can look at comparisons of previous computer model results to recorded satellite temperatures. Figure 2 shows Roy Spencer’s plot of 44 of the latest climate models versus satellite measurements. As his graph shows, the models were not even close to the real measured temperatures. The obvious conclusion here is that the models failed miserably, a fact admitted to by the IPCC in their latest report.

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Figure 2. Temperatures from 44 of the latest computer climate models plotted against UAH and RSS satellite temperature measurements. The models weren’t even close! (Spencer, 2014)

Well, maybe the graph from the 16 climate models used in the NCA report weren’t included in the 44 models in the Spencer plot, so let’s check their particular model results by looking at the 18 year period of overlap of the NCA model results and satellite measurements in Figure 1. The graph shows that the computer model predicted an increase of 0.8° F during the past 18 years when satellite measurements record no warming at all! That’s a huge difference over such a time period–the modeled results are nowhere near reality. If the model can’t come any closer than 0.8 ° F in 18 years, why should we believe that it is any more accurate over the next 86 years to the end of the century? The modeled temperature predictions fail verification from measured temperatures and thus fail the Feynman test “If it disagrees with the experiment, it is wrong.” We can therefore confidently conclude that the NCA temperature predictions are not valid.

At this point, we might ask, since virtually everything else in the NCA report is based on these computer models, doesn’t that invalidate all that follows? It certainly invalidates their dire predictions, but the report also contains assertions that are based on claims other than from models. So let’s look at some of those.

The report claims that:

1. NCA assertion: “The burning of coal, oil, and gas, and clearing of forests have increased the concentration of carbon dioxide in the atmosphere by more than 40% since the Industrial Revolution.”

Facts: This percentage increase means nothing. Human CO2 emissions didn’t begin to rise significantly until after 1945 at the end of WWII, so no warming prior to that can be attributed to CO2. The CO2 composition of the atmosphere then was about 0.030 %. The CO2 composition of the atmosphere recently reached 0.04%, a total increase of only 0.010% since ~1950. But the period of ‘global warming didn’t begin until 1978 when CO2 made up 0.034% of the atmospheric, so that’s an increase of only 0.006%. ’ That’s about as close to nothing as you can get, and even if you double or triple it, you still have close to nothing!

2. NCA assertion: “It has been known for almost two centuries that carbon dioxide traps heat.”

Facts: That’s not the question—it’s not if CO2 is a greenhouse gas, it’s how much is there in the atmosphere (Fig. 3) and how much can it affect climate? CO2 makes up only 3.6% of the greenhouse gases (Fig. 4) and coupled with the fact that the atmospheric concentration has changed only 0.0065% since recent warming began in 1978 (Fig. 3), there is no way that this miniscule amount can have any significant effect on climate. Water vapor accounts for ~95% of the greenhouse effect and computer modelers put a large arbitrary water vapor factor in their computer programs, claiming that if CO2 increases, so will water vapor. But that isn’t true—atmospheric water vapor has been declining since 1948 (Fig. 5), not increasing, so modelers who put a water vapor driver in their programs will not have a valid output.

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Figure 3. Total change in CO2 content in the atmospheric since global warming began in 1978. (Mauna Loa observatory)

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Figure 4. Greenhouse effect of CO2 and water vapor.

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Figure 5. Decline in atmospheric water vapor since 1948. Water vapor is clearly NOT increasing as required by computer models in predicting catastrophic atmospheric warming. (NOAA)

Ice cores clearly show that CO2 increases always follow warming (Fig. 6), not precede warming as would occur if CO2 caused the warming.

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Figure 6. CO2 lags behind warming in the Vostok ice core.

CO2 also lags short-term warming (Fig. 7), showing that warming causes rise in CO2, not the other way around if CO2 was the cause. (see joannenova.com.au for references)

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Figure 7. CO2 also lags short-term warming, again showing that warming causes CO2 to rise, not the other way around.

3. NCA assertion: “Data show that natural factors like the sun and volcanoes cannot have caused the warming observed over the past 50 years.” “Sensors on satellites have measured the sun’s output with great accuracy and found no overall increase during the past half century.”

Fact: This is a very outdated statement—global climate marches in lock step with sun spots, length of the sun spot cycle, and intensity of the solar magnetic field. This excellent correlation has long puzzled scientists because even though total solar insolation (TSI) correlates very well with climate, the variation doesn’t appear to be great enough to have much effect on climate. New research at Cern (Svensmark) has shown that a very likely cause of this is fluctuation of the sun’s magnetic field that affects radiation reaching the atmosphere where ionization leads to cloud formation and changes in albedo. You’d think that with all those scientists who wrote this report, at least someone would know about that. Bottom line here is that this statement is obsolete because of the ‘Svensmark process.’

4. NCA assertion: The pattern of temperature change through the layers of the atmosphere, with warming near the surface and cooling higher up in the stratosphere, further confirms that it is the buildup of heat-trapping gases (also known as “greenhouse gases”) that has caused most of the Earth’s warming over the past half century.

Fact: Comparison of model results and real measurements show that this statement is not true- they are quite different.

5. NCA assertion: “U.S. average temperature has increased by 1.3°F to 1.9°F since 1895, and most of this increase has occurred since 1970.”

Fact: As shown by HadCrut4 data (Fig. 8) this statement is not true. 56% of the warming since 1895 occurred prior to 1945.

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Figure 8. HadCRUT4 temperature curve showing that 56% of the warming since 1895 occurred prior to 1945, not “most of this increase has occurred since 1970.”.

The rate of warming from 1860 to 1880 was 0.16°C per decade and the rate from 1910 to 1940 was 0.15°C per decade, both prior to the increase in CO2 that occurred after 1945. The rate of warming from 1975 to 1998 was 0.166 °C per decade, virtually the same as the 1860-1880 and 1910-1945 warming. What this means is that two periods of warming identical to the more recent warming occurred before the rise of human CO2 emissions.

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Figure 9. Periods of global warming occurred during the past century, 1860 to 1880, 1910 to 1945 and 1975 to 1998. The rates of warming were identical for all three periods, but the 1860 to 1880 and 1910 to 1945 warming occurred before the rise of human CO2 emissions so could not have been caused by rise in CO2. (Phil Jones)

 

6. NCA assertion:The most recent decade was the nation’s and the world’s hottest on record.” “The second line of evidence is from reconstructions of past climates using evidence such as tree rings, ice cores, and corals. These show that global surface temperatures over the last several decades are clearly unusual, with the last decade (2000-2009) warmer than any time in at least the last 1,300 years and perhaps much longer.”

 

Fact: This contention is totally false. The Greenland ice cores and a vast amount of other paleotemperature data show that temperatures during the Medieval Warm Period (900 AD to 1300 AD) were warmer than at present (Fig. 10).

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Figure 10. The Medieval Warm Period was warmer than present.

7. NCA assertion: “2012 was the hottest year on record in the continental United States.”

Fact: The 2012 temperatures were essentially the same as 1921, 1931, and 1934 (Fig. 11), using original data not altered by USCHN. The NCA claim is based on tampering of the original data (see data at http://stevengoddard.wordpress.com/tracking-us-temperature-fraud/). The authors of the NCA report don’t seem to know the difference between weather and climate. Ini any event, this is weather and tells us nothing about climate–warmer and cooler years can happen anytime in the record, regardless of climate.

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Figure11. U.S. annual temperature from original data. (USHCN arbitrarily subtracts temperatures from the early part of the record and adds to the more recent records, severely biasing the data). Temperatures in 2012 were clearly essentially the same as those in 1921, 1931, and 1934.

Globally, 2012 was not unusually warm. Satellite (RSS) measurements show the 2012 was well below 1998, 2010, and slightly below half a dozen other years (Fig. 12)

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Figure 12. Satellite temperature measurements. 2012 temperatures were well below 1998, and 2010 temperatures, and were slightly below more than half a dozen other years.

8. NCA assertion: All U.S. regions have experienced warming in recent decades.

Fact: This statement is not true. Although the climate warmed from 1978 to 2000, in general, the eastern half of the U.S. has cooled recently and the western half has warmed or been neutral (Fig 12).

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Figure 12. U.S. Temperature stations. Blue dots are station showing recent cooling, tan dots are neutral, and red dots are warmer. Most of the eastern half of the country has cooled, and most of the western U.S. has been neutral with some warming.

Much of the NOAA temperature data has been artificially inflated to show warming. NOAA stations that meet siting requirements show warming of 0.155°C per decade and NOAA stations that do not meet minimum siting requirements show warming of 0.248 °C per decade. However, the warming reported by NOAA is 0.309 °C per decade, twice as much as shown by the good data (Watts, 2010).

Twice as many maximum temperature records were set in the decade of the 1930s as in the past decade and four times as many summer maximum records set in the decade of the 1930s as in the past decade (Fig. 13).

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Figure 13. Number of maximum temperature records set per decade.

Globally, there has been no warming over the past 17½ years (Fig. 13).

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Figure 14. Global satellite (RSS) temperatures show no warming over the past 17½ years (Monckton, 2014).

Winters in all regions of the U.S. have become decidedly colder over the first decade of this century (Fig. 15). Winters in the north-central U.S. are more than -8 °F/decade cooler, the south-central U.S. -3-5 °F/decade cooler, and the west and east coasts -1-2 °F/decade cooler.

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Figure 15. Cooling of all regions in the winter for the first decade of this century.

9. NCA assertion: Heat waves have generally become more frequent across the U.S. in recent decades, with western regions setting records for numbers of these events in the 2000s. Tree ring data suggests that the drought over the last decade in the western U.S. represents the driest conditions in 800 years.

Facts: The ‘record-setting droughts in the 2000s’ were not really records at all. The only year of any substantial drought was 2012 and according to the NCDC, it ranked only number 6 in the past century. The others were:

Year % of US in drought

1934 79.9%

1939 62.1

1954 60.4

1956 57.6

1931 54.9

2012 54.6

(NCDC)

The droughts of the 1930s and 1950s were stronger than those of the 2000s according to the Palmer Drought Severity Index.

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Figure 16. Drought Severity Indices, 1895-2013 (NOAA)

The number of daily high temperature records clearly shows that the 1930s were significantly warmer than the 2000s (Fig. 17). Almost 4,000 high temperature records were set in 1936 and more than 3,000 in 1934 compared to only 1,300 in 2012.

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Figure 17. Number of daily high temperatures for 229 USHCN stations having more than 80 years of record.

Other evidence that the 1930s were warmer than the 2000s includes the number of records of temperatures over 105 °F (Fig. 18). 16,000 days in the 1930s had temperatures at or above 105 °F, but only 2,500 days were above 105 °F in the 2000s.

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Figure 18. Number of days warmer than 105 °F.

10. NCA assertion: The intensity, frequency, and duration of North Atlantic hurricanes, as well as the frequency of the strongest hurricanes, have all increased since the early 1980s.

Facts: It has been 9 years since the last Category 3 hurricane (Wilma, 2005). That’s the longest period—by far—in records that extend back to 1900. There have been no hurricanes during the Obama administration (Sandy was not technically a hurricane when it came onshore).

The number of hurricanes in Florida didn’t vary much from 1870 to 1970, dropped to a low in 1980, rose to match the high of the century (1950), and has now fallen to an all-time low (Fig. 19).

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Figure 19. Number of Florida hurricanes per year since 1870. We are now at an all-time low.

The Accumulated Cyclone Energy in both the Northern Hemisphere globally has been declining since the early 1990s (Fig.

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Figure 20. Accumulated Cyclone Energy in both the Northern Hemisphere globally since 1972.

11. NCA assertion Global sea level has risen by about 8 inches since reliable record keeping began in 1880. The future scenarios range from 0.66 feet to 6.6 feet in 2100. This recent rise is much greater than at any time in at least the past 2000 years.

Facts: During the last Ice Age (~10-20,000 years ago), vast areas of continents were covered with ice sheets up to 10,000 feet thick. There was so much water tied up in these ice sheets that it caused sea level to drop about 120 meters (400 feet). 11,500 years ago, the climate changed abruptly, warming at rates up to 20 °F in a century, bringing the Ice Age to a very sudden end. The ice sheets melted at an astonishing rate, causing sea level to rise sharply. We know the chronology of this sea level rise (Fig. 21), so we can calculate the rate of sea level rise as the ice sheets melted. Sea level rose 50 meters (160 ft) between 12,000 and 8,000 years ago. That’s a rate of sea level rise of 4 feet per century, during a time when gigantic ice sheets were melting from warming of tens of degrees per century.

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Figure 21. Sea level over the past 12,000 years.

The authors of the NCA report (and NOAA) want us to believe that sea level may rise as much as 6.6 feet by 2100 (86 years from now), a rate of sea level rise of 7.7 feet per century! That’s about twice the rate at which sea level rose while the huge Ice Age ice sheets melted under warming of tens of degrees per century. So where do the so-called scientists of this report think all this water will come from? Those huge Ice Age ice sheets no longer exist, so the only possible source is melting of the Antarctic and Greenland ice sheets? How likely is it that a 0.006% rise in CO2 is going to melt a significant portion of the Antarctic ice sheet? Probably zero to none. Why couldn’t the so-called scientists who authored the NCA report do the simple math? If they had even read the literature, this analysis has already been published (Morner, 2020).

The East Antarctic ice sheet (the major Antarctic ice sheet with ice up to 15,000 feet thick) first appeared in the Miocene, 15 million years ago. Throughout most of the Antarctic ice sheet history, global CO2 levels were 1000-2000 ppm (compared to present 400 ppm), so the recent miniscule rise of CO2 is peanuts compared to what it has been. So even doubling, tripling, quadrupling, or quintupling of CO2 would still be well below the levels of most of the ice sheet’s history and the ice sheet survived those quite nicely.

The Antarctic ice sheet is continuing to grow, not melt, and sea ice is presently at an all-time high (Fig. 22). The average daily temperature in Antarctica is –58° F, so to get significant ice to melt would require raising the average daily temperature from -58 to +32 ° F (melting point of ice), plus another ~10 ° F, a total warming of +100° F. Not likely!

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Figure 22. Antarctic sea ice is presently at an all-time high, about a million square kilometers above average.

Another way to look at the ridiculousness of the NCA predicted sea level rise is to compare their predictions with history sea level rates. The rate of sea level rise from 1900 to 2000 was 1.7 mm/yr (~7 inches per century) (Fig. 23). Figure 24 shows a comparison of the sea level rise over the past century with the NCA predicted sea level rise. The huge difference is impossible because there is no source of water for the NCA predicted rise.

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Figure 23. Sea level since 1700 AD

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Figure 24. NCA sea level rise prediction compared to projecton of sea level rise over the past century.

 

CONCLUSIONS

How well do the NCA assertions compare with real data? As can be seen from the data above, they diverge wildly from real data. The report is filled with wild distortions and outright fabrications. If we apply Feynman’s scientific method (if an assertion disagrees with observations or data, it is wrong) to the NCA report, we can only conclude that the report fails badly. One can only wonder why the so-called scientists who wrote the report could possibly justify making such unsupported assertions contrary to hard data.

A substantial part of the report emphasizes weather events (drought, hurricanes, tornadoes, storms, etc). The authors don’t seem to know the difference between weather and climate. None of the ‘extreme events’ they cite have any meaning whatsoever to climate. Single weather events can happen at any time, regardless of the climate.

The authors also don’t seem to be able to distinguish cause-and-effect relationships from artificial scenarios. They frequently point to ‘global warming’ as if that somehow proves it was caused by CO2,totally ignoring vast amounts of data showing that CO2 always lags warming, even on a short term basis. If CO2 lags warming, it can’t be the cause of the warming!

The most obvious shortcoming of the NCA report is all of the assertions that are contrary to hard data. But the report is also weakened by the wholesale ignoring of relevant data. Rather than discussing data and justifying their assertions, the authors simply disregard any data that doesn’t fit their scenarios.

From these observations, one can only conclude that the report is really not a scientific document at all, but rather a huge political propaganda effort. Anthony Watts (http://wattsupwiththat.com/) said it quite succinctly:

“To me, this looks more like a glossy sales pitch from a company that is pushing a product they know people may not need, but if marketed just right, it would be something they’d buy. It reminds me of some insurance commercials I’ve seen in the past, where the commercial portrays all the bad things that could happen to you if you don’t get covered. Basically, they are trying to make people afraid of the weather, and then they pitch a solution to that fear in a way that’s right up there with the best traditions of salesmanship: Who wouldn’t want better weather? Just buy our product.”

Footnote:

Science is based on the ‘scientific method,’ which has been articulately described by Richard Feynman, a Cal Tech, nobel-prize-winning physicist.

1. Science is a method of finding things out by observation, experimentation, and testing, which is the ultimate judge of the truth of a concept.

2. If any exception to a concept can be proven by observation, the concept is wrong.

3. The number of scientists who believe something is irrelevant to the validity of a concept.

4. No government or other authority can decide the truth of a scientific concept.

5. All scientists are skeptics—it is important to doubt in order to test concepts and look in new directions.

He outlines the necessary steps in using the scientific method as follows:

“In general, we look for a new law by the following process: First we guess it; then we compute the consequences of the guess to see what would be implied if this law that we guessed is right; then we compare the result of the computation to nature, with experiment or experience, compare it directly with observation, to see if it works. If it disagrees with the experiment, it is wrong. In that simple statement is the key to science. It does not make any difference how beautiful your guess is, it does not make any difference how smart you are, who made the guess, or what his name is—if it disagrees with experiment, it is wrong. “ (Richard Feynman).

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About Don J. Easterbrook

Professor of Geology Western Washington University Bellingham, WA 98225
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78 Responses to Sanity Checking The National Climate Assessment Report Against Real Data Reveals Major Discrepancies

  1. James the Elder says:

    And just today, the talking heads said the Antarctic ice sheet will raise the MSL by 13 feet. Guess which one will get all the play.

  2. Sweet Old Bob says:

    Why all the scare tactics NOW? What do they fear so much?
    Questioning minds want to know….

  3. Keep it simple, they need more taxes. The old way no longer works to get the amounts needed.
    So they make stuff up and have the pet wolf howl at night near the childrens bed rooms.
    Facts have nothing to do with this redistribution of wealth operation.

  4. richard says:

    ” the western half has warmed or been neutral (Fig 12).”

    and also greened over the last 30 years –

    see US on world map on link.

    http://www.sciencedaily.com/releases/2013/07/130708103521.htm

  5. bevothehike says:

    It’s been said before but why aren’t more scientists speaking out? It’s obvious that the current administration in America is working feverishly to enact laws that support this hoax before their time is up.

  6. What is so sad, the amount of people that believe this Global Disruption now scam.
    And there’s no convincing them with the truth.. You and all of us waste our time even trying.
    Fact’s don’t matter. And their science is Settled. Just ask Obama…………

  7. RM says:

    “The CO2 composition of the atmosphere then was about 0.030 %. The CO2 composition of the atmosphere recently reached 0.04%, a total increase of only 0.010% since ~1950.”

    Suggested clarification: Increasing CO2 composition from 0.030% to 0.04% is an increase of 0.010 percentage points, but is an actual increase of 33%.

  8. Toma B. says:

    I find it very frustrating that guest authors decline to provide the credit/source links for images used in their presentations. From what I can tell, Easterbrook usually is not compliant with this normal courtesy when he liberally “borrows” charts and graphs from others.

    Maybe in the future Anthony can insist for all guest authors to provide links to the original sources. (Btw, I am not talking about Bob T., Willis and other primary WUWT guest writers.)

  9. Bill 2 says:

    “the atmospheric concentration [of CO2] has changed only 0.0065% since recent warming began in 1978″

    Is this really true? That seems small based on graphs I’ve seen.

  10. DMA says:

    My question is: If this report was paid for with taxpayer money, aren’t the authors subject to a lawsuit by the citizens that will be harmed by the lies and half-truths it contains if the policy makers rely on it? Citizens should be able to expect “scientific” reports to reflect the truth and should have some legal recourse if, as in this document, lies are told to promote a political agenda.
    Next question: How do I sign up for the class action suit?

  11. herkimer says:

    ANNUAL US temperatures have been declining at (-0.36 F/DECADE) since 1998.
    Winter temperatures in United States have been declining now for 17 years at about -1.78F/ decade according to NCDC/NOAA, CLIMATE AT A GLANCE data. In United States, 8 out 12 months of the year are cooling. Winters, spring [2months] and fall are all cooling while only 3 months, namely March, June and July are still warming. ANNUAL US temperatures are also declining at (-0.36 F/DECADE) since 1998.

    Not only have winters been getting cooler since 1998 in Contiguous US [48 states] and Canada, but winters have been getting colder for the Northern Hemisphere as a whole and for the Globe as a whole. .. The winter temperatures in United States were colder in every region except the West and the long term trend since 1998 is that winters are getting colder. Overall, for United States the past winter was the 34th coldest since 1895.. North America is experiencing a cold cycle currently like they had 1895-1920 and again 1955-1979 and hence I see this cooler pattern to continue for several decades.
    Very cold winters bring cooler than normal spring and summer as we are now experiencing. These events have nothing to do with global warming or man’s influence.

    What the NCA report is not telling us is how much the winters have cooled recently as their focus is only on man induced global warming . Just look at these figures for winter cooling since 2010 in Canada. These are winter temperature drops .

    Atlantic Canada has cooled 4C since 2010 (7.2 F)
    Great Lakes and St Lawrence valley cooled 5.6 C since 2012 ( 10F)
    Northern Ontario and Quebec has cooled 6.9 C since 2010 (12.4F)
    Northern western forests cooled 6.8 C since 2012 (12.2 F)
    Prairies cooled 8.0 C since 2012 ( 14.4F)
    Canada’s National winter temperature cooled 4.5 C since 2010 ( 8.1 F)

    Five major climate regions out of 11 and the Canadian National winter temperature departures for the 2013/2014 winter were well below the 1961-1990 averages

    Yet NAC seems to be oblivious to the real climate around them.

  12. AlecM says:

    I have recently put onto this site and others my own analysis of the real heat transfer at the Earth’s surface, based on decades of practical experience of measuring and predicting heat transfer in industrial processes.

    The IPCC Climate Alchemists have got it wrong. It goes back to Carl Sagan who failed to understand the real reason for Venus’ 0.9 albedo, and got his sums wrong.

    This has poisoned the scientific well of Atmospheric Physics. There is no enhanced GHE. The real climate sensitivity of CO2 is controlled by atmospheric processes to be near zero. Lapse rate heating is set by gravity. There is no heat accumulation in the hot spot, no missing heat.

    This pseudoscience is based on many aspects of bad physics. The politicians are making a last ditch attempt to deceive the public.

  13. Jimbo says:

    The Jumbo in the room.

    Two periods of global warming occurred during the past century, 1910 to 1945 and 1978 to 2000. The rates of warming were identical for both periods, but the 1910 to 1945 warming occurred before the rise of human CO2 emissions so could not have been caused by rise in CO2.

    The IPCC time and again emphases POST 1950 for the significant ‘human influence’.

    Warming > cooling > warming
    Natural > natural > UNnatural man-made CAGW!
    http://www.metoffice.gov.uk/media/image/j/l/warmingtrend.gif
    http://www.cru.uea.ac.uk/cru/data/temperature/_nhshgl.gif

  14. ATheoK says:

    Did anyone happen to notice if they at least got their names right when they published the National Climate Embarrassment Assessment rubbish?

  15. Hot under the collar says:

    More sanity checking required of the MSM – the Guardian is blaming ‘climate change’ for the kidnapping of the Nigerian schoolgirls!

    http://www.theguardian.com/environment/earth-insight/2014/may/09/behind-rise-nigeria-boko-haram-climate-disaster-peak-oil-depletion

  16. Jimbo says:

    6. NCA assertion: “The most recent decade was the nation’s and the world’s hottest on record.”

    So the Medieval Warm Period was mostly a northern hemisphere affair AND it largely forgot the United States? Greenland farms buried in permafrost, olives grown in southern Germany etc. That is one heck of a lot of persistent pocket of heat hovering over Europe and Greenland but was averse to the United States. I like it. ;-)

    Medieval Climatic Optimum
    Michael E Mann – University of Virginia, Charlottesville, VA, USA

    It is evident that Europe experienced, on the whole, relatively mild climate conditions during the earliest centuries of the second millennium (i.e., the early Medieval period). Agriculture was possible at higher latitudes (and higher elevations in the mountains) than is currently possible in many regions, and there are numerous anecdotal reports of especially bountiful harvests (e.g., documented yields of grain) throughout Europe during this interval of time. Grapes were grown in England several hundred kilometers north of their current limits of growth, and subtropical flora such as fig trees and olive trees grew in regions of Europe (northern Italy and parts of Germany) well north of their current range. Geological evidence indicates that mountain glaciers throughout Europe retreated substantially at this time, relative to the glacial advances of later centuries (Grove and Switsur, 1994). A host of historical documentary proxy information such as records of frost dates, freezing of water bodies, duration of snowcover, and phenological evidence (e.g., the dates of flowering of plants) indicates that severe winters were less frequent and less extreme at times during the period from about 900 – 1300 AD in central Europe……………………

    Some of the most dramatic evidence for Medieval warmth has been argued to come from Iceland and Greenland (see Ogilvie, 1991). In Greenland, the Norse settlers, arriving around AD 1000, maintained a settlement, raising dairy cattle and sheep. Greenland existed, in effect, as a thriving European colony for several centuries. While a deteriorating climate and the onset of the Little Ice Age are broadly blamed for the demise of these settlements around AD 1400,
    http://www.meteo.psu.edu/holocene/public_html/shared/articles/medclimopt.pdf

  17. Bob Tisdale says:

    Don Easterbook wrote:
    “8. NCA assertion: All U.S. regions have experienced warming in recent decades.
    Fact: This statement is not true. Although the climate warmed from 1978 to 2000, in general, the eastern half of the U.S. has cooled recently and the western half has warmed or been neutral (Fig 12).”

    Your Figure 12 is Figure 3 from Verity Jones’s post here:
    http://diggingintheclay.wordpress.com/2010/01/18/mapping-global-warming/

    According to Verity, it represents “US 1880 to 2010 raw data slopes” not the period of 1978 to 2000.

  18. indpndnt says:

    I can’t find the water vapor chart data online, and the chart itself is such a small image.

    Where can we see a bigger version of it? It seems to me that empirical demonstrations of lower water vapor content would be useful as their own post, because so much AGW hinges on CO2 -> Water Vapor positive feedbacks.

  19. Dave Wendt says:

    “Other evidence that the 1930s were warmer than the 2000s includes the number of records of temperatures over 105 °F (Fig. 18). 16,000 days in the 1930s had temperatures at or above 105 °F, but only 2,500 days were above 105 °F in the 2000s.”

    It would appear from Fig. 18 that the 2500 number refers to the 2010s, which are only about 1/3rd over, and the 00s are at approx. 6500 days, although both are still substantially behind the 30s.

  20. Jimbo says:

    The very expensive NCA report is a huge exercise in climate trickery to force us into wind and solar electrickery for the financial gain of certain carbon gamblers in the higher echelons on the USA. It’s not about carbon dioxide, it’s about making a lot of money. Just look at Al Gore after the sale of his Current TV to the Qatari oil funded Al Jazeera. You will find Lord Oxburgh and Lord Stern right in there with their very own carbon investments. These investors are many folks, don’t be fooled.

  21. Zap says:

    So, do we reject the post from Mr. E. in it’s entirety based upon the comment from Mr. T. or do we cherry pick, redact portions, segregate stuff ?
    It’s frustrating enough trying to work for a living, stay current and informed, deal with the decline, or, lack of progress I expected out of Humanity – then it seems more and more like the Scientific Method is being tortured and abused while I’m expected to continue to feed the machine of all this blather more of my tax dollars.
    Sanity check article = thumbs up
    Special comment from Mr. T = more fuel to frustration fire.

  22. Latitude says:

    plotted against UAH and RSS satellite temperature measurements…….
    =====
    I am sick and tired of looking at these stupid graphs with those blown up temp scales…
    …sick and tired of giving validity to a science that’s 100% dependent on made up temp histories
    and sick and tired of discussing fractions of a degree and what do to about that science that does not even exist

    This is what the real temperature history looks like to real people……….
    …and presented in real terms this way, no one would give two seconds to this crap at all

    http://suyts.wordpress.com/2013/02/22/how-the-earths-temperature-looks-on-a-mercury-thermometer/

    (/rant)

  23. Jimbo says:

    I see the NCA likes proxies. What about these for drought for the United States? It was much worse than we thought.

    IPCC
    IPCC Fourth Assessment Report: Climate Change 2007
    Multiple proxies, including tree rings, sediments, historical documents and lake sediment records make it clear that the past 2 kyr included periods with more frequent, longer and/or geographically more extensive droughts in North America than during the 20th century (Stahle and Cleaveland, 1992; Stahle et al., 1998; Woodhouse and Overpeck, 1998; Forman et al., 2001; Cook et al., 2004b; Hodell et al., 2005; MacDonald and Case, 2005). Past droughts, including decadal-length ‘megadroughts’ (Woodhouse and Overpeck, 1998), are most likely due to extended periods of anomalous SST (Hoerling and Kumar, 2003; Schubert et al., 2004; MacDonald and Case, 2005; Seager et al., 2005), but remain difficult to simulate with coupled ocean-atmosphere models. Thus, the palaeoclimatic record suggests that multi-year, decadal and even centennial-scale drier periods are likely to remain a feature of future North American climate, particularly in the area west of the Mississippi River.

  24. Jimbo says:

    11. NCA assertion Global sea level has risen by about 8 inches since reliable record keeping began in 1880. The future scenarios range from 0.66 feet to 6.6 feet in 2100. This recent rise is much greater than at any time in at least the past 2000 years.

    Then let’s stop extracting ground water. Yay.

    Groundwater extraction for irrigation Groundwater abstraction is about “one fourth of the current rate of sea level rise of 3.3 mm per year.”
    Here is the paper’s abstract.

    It gets worse.

    American Meteorological Society – Volume 26, Issue 13 (July 2013)
    Abstract
    Twentieth-Century Global-Mean Sea Level Rise: Is the Whole Greater than the Sum of the Parts?

    ………..The reconstructions account for the observation that the rate of GMSLR was not much larger during the last 50 years than during the twentieth century as a whole, despite the increasing anthropogenic forcing. Semiempirical methods for projecting GMSLR depend on the existence of a relationship between global climate change and the rate of GMSLR, but the implication of the authors’ closure of the budget is that such a relationship is weak or absent during the twentieth century.
    http://dx.doi.org/10.1175/JCLI-D-12-00319.1
    —————————–
    Abstract – 2011
    It is essential that investigations continue to address why this worldwide-temperature increase has not produced acceleration of global sea level over the past 100 years, and indeed why global sea level has possibly decelerated for at least the last 80 years.
    http://www.jcronline.org/doi/abs/10.2112/JCOASTRES-D-10-00157.1

    There has been no credible evidence presented to show any acceleration in the rate of sea level rise (despite news reports of melting everything).

  25. DR says:

    Jimbo, did you start your blog yet?

  26. Don – a great compilation. It has been apparent for several years that the IPCC modeling based forecasts have no predictive value . The entire IPCC output including the WG2 and WG3 sections fall into the not even wrong category and provides no basis for serious discussion, but still almost all the MSM pundits and EU and U.S.Democratic Party political leaders including especially the President.continue to refer to the IPCC and NCAR forecasts as though they had some connection to the real world.
    A different non modeling approach must be used for forecasting . Forecasts of the timing and amount of a possible coming cooling based on the 60 and 1000 year natural quasi-periodicities in the temperature and using the neutron count and 10Be record as the best proxy for solar activity are presented in several posts at
    http://climatesense-norpag.blogspot.com
    The question is how can non establishment , independent scientists bring the truth through to the general public when establishment academia and the bulk of the MSM including PBS and NPR has been captured by ideologues for use as a propaganda tool to support their political and personal agendas.
    Marc Morano at Climate Depot gets good visibility – mainly via Fox but the other networks almost never allow serious criticism of the establishment “science” to be heard and all weather events are presented as evidence for the CO2 meme. If anyone has any good ideas as to how to change this unfortunate and unhealthy situation I would be interested to hear them.

  27. Jimbo says:

    The Antarctic ice sheet is continuing to grow, not melt, and sea ice is presently at an all-time high (Fig. 22).

    I wonder why? Here is East Antarctica.

    National Geographic – 10 December 2013
    New Record for Coldest Place on Earth, in Antarctica
    Scientists measure lowest temperature on Earth via satellites.
    Using new satellite data, scientists have measured the most frigid temperature ever recorded on the continent’s eastern highlands: about -136°F (-93°C)—colder than dry ice…..
    http://news.nationalgeographic.com/news/2013/12/131210-coldest-place-on-earth-antarctica-science/

    Plus this

    Abstract – 7 JUN 2013
    Recent snowfall anomalies in Dronning Maud Land, East Antarctica, in a historical and future climate perspective
    Enhanced snowfall on the East Antarctic ice sheet is projected to significantly mitigate 21st century global sea level rise. In recent years (2009 and 2011), regionally extreme snowfall anomalies in Dronning Maud Land, in the Atlantic sector of East Antarctica, have been observed. It has been unclear, however, whether these anomalies can be ascribed to natural decadal variability, or whether they could signal the beginning of a long-term increase of snowfall. Here we use output of a regional atmospheric climate model, evaluated with available firn core records and gravimetry observations, and show that such episodes had not been seen previously in the satellite climate data era (1979). Comparisons with historical data that originate from firn cores, one with records extending back to the 18th century, confirm that accumulation anomalies of this scale have not occurred in the past ~60 years, although comparable anomalies are found further back in time. We examined several regional climate model projections, describing various warming scenarios into the 21st century. Anomalies with magnitudes similar to the recently observed ones were not present in the model output for the current climate, but were found increasingly probable toward the end of the 21st century.
    http://onlinelibrary.wiley.com/doi/10.1002/grl.50559/abstract
    =================
    Abstract – 2 NOV 2012
    An improved understanding of processes dominating the sensitive balance between mass loss primarily due to glacial discharge and mass gain through precipitation is essential for determining the future behavior of the Antarctic ice sheet and its contribution to sea level rise. While satellite observations of Antarctica indicate that West Antarctica experiences dramatic mass loss along the Antarctic Peninsula and Pine Island Glacier, East Antarctica has remained comparably stable. In this study, we describe the causes and magnitude of recent extreme precipitation events along the East Antarctic coast that led to significant regional mass accumulations that partially compensate for some of the recent global ice mass losses that contribute to global sea level rise. The gain of almost 350 Gt from 2009 to 2011 is equivalent to a decrease in global mean sea level at a rate of 0.32 mm/yr over this three-year period.
    http://onlinelibrary.wiley.com/doi/10.1029/2012GL053316/abstract

    The IPCC projected more snow towards the end of this century. The problem is that it seems to have already begun plus expanding record sea ice extent. Maybe they got it wrong but won’t own up.

  28. davidmhoffer says:

    Folks, we need to be more critical of material that supports our belief system. There are excellent points made in this article, but there’s a lot of spin that is just wrong.

    NCA Assertion 1 for example. CO2 having gone from about 280ppm to 400ppm, the difference being 120ppm, and that being 42.9% of 280, the assertion is approximately correct. The rebuttal in this article seems to misunderstand what the assertion is in the first place.

    The critique of NCA Assertion 2 carries on with this error and similarly loses credibility by claiming that atmospheric concentration has only risen by 0.0065%. Again, the original claim was the increase in percentage from the base amount in a given year, not the raw percentage of the atmosphere.

    I only skimmed the rest of the article, it had lost its credibility with me after the first two points.

  29. Nick Stokes says:

    Toma B. says: May 13, 2014 at 2:51 pm
    “I find it very frustrating that guest authors decline to provide the credit/source links for images used in their presentations. From what I can tell, Easterbrook usually is not compliant with this normal courtesy when he liberally “borrows” charts and graphs from others.”

    Hear, hear! Looking at Fig 5, it’s not only borrowed, it’s unreadable. Here is a legible copy which tells that it is from climate4you, and is a plot of relative humidity (RH) at various levels of the atmosphere.

    I think it is probably an accurate plot, but look at what it shows. The top two plots are at quite high altitude, and show declining RH. But RH will decline with warming, even if the amount of water in the air is the same. The bottom plot shows surface RH since 1948. Mid-graph is 1970. According to that, surface RH has actually been increasing since 1970. So specific humidity, the actual proportion of wv in the air, would increase even more.

    Fig 2 is at least attributed. But why compare model predictions of what seem to be surface temperature only with observations of lower troposphere?

  30. John in Oz says:

    Were there no references in the NCA report that could be directly contradicted/refuted rather than introduce your own data without reference to theirs, correct or not? Would it not be better to argue against the ‘evidence/data’ that the report is based on?

    If there are no references in the report then it should be considered hearsay and/or uninformed opinion and not used to enact legislation.

    And a small nit-pick:

    Other evidence that the 1930s were warmer than the 2000s includes the number of records of temperatures over 105 °F (Fig. 18). 16,000 days in the 1930s had temperatures at or above 105 °F, but only 2,500 days were above 105 °F in the 2000s.

    Shouldn’t ‘16,000 days’ read ‘16,000 readings’ as figure 18 shows readings and the 1930’s (10 years) was only 3,652 days.

  31. Nick Stokes says:

    “5. NCA assertion: “U.S. average temperature has increased by 1.3°F to 1.9°F since 1895, and most of this increase has occurred since 1970.”

    Fact: As shown by HadCrut4 data (Fig. 8) this statement is not true. 56% of the warming since 1895 occurred prior to 1945.”

    Again, Fig 8 is hard to read. But it’s a climate4you plot of global temperature. How does that contradict the NCA assertion?

  32. Jimbo says:

    DR says:
    May 13, 2014 at 4:06 pm

    Jimbo, did you start your blog yet?

    No. Time. Imagine if I could just get some oil funding I could work like crazy just on the CAGW issue. I don’t know how our host does it.

  33. Chad Wozniak says:

    One would expect such an enormous divergence from fact when a report is based solely on two forms of empty assertion: climate models and human fantasies.

  34. herkimer says:

    Dr NORMAN PAGE
    You said

    “but the other networks almost never allow serious criticism of the establishment “science” to be heard and all weather events are presented as evidence for the CO2 meme.”

    You are so right. However do not underestimate the power of the internet and social media and the power of WUWT and similar blogs to get the truth out. These blogs reach millions of people who care and who will spread the truth and their power is growing . The problem with our mainstream media is that they seem to be no longer genuine news outlets but advocates for special interest groups when it comes to climate science and they seem to have strong political bias and hence they can no longer be trusted for honest journalism in my opinion. Nowhere is this more apparent than with climate news.

  35. Jimbo says:

    davidmhoffer says:
    May 13, 2014 at 4:19 pm

    Folks, we need to be more critical of material that supports our belief system. There are excellent points made in this article, but there’s a lot of spin that is just wrong……

    I agree. The first assertion is on US temps and the rebuttal goes to global temps (it looks like). This post needs to be re-written. I get the points being made but it needs to be re-done IMHO. If you are going to rebut a government sponsored document you need to use THEIR own data ONLY. Well, that is how I would attack the issue. Blogs are OK in other circumstances but this is a government document, they will dismiss your claims easily by pointing to blog references.

  36. Jimbo says:

    If you are going to rebut a government sponsored document you need to use THEIR own data ONLY.

    or data from the ‘official’ Warmist side. It’s a tactical thing. Don’t give your enemies ammunition.

  37. Jimbo says:

    You will see that whenever possible I use any of the following:
    Peer reviewed papers or abstracts
    Warmist media outlets (Guardian, BBC etc)
    The IPCC etc.

    Why? Because I know their first line of attack.

    I do reference other sources based upon the subject matter, but the NCA report needs to be tackled via official sources, peer review and the IPCC. I am sorry if I upset anyone here but this is a climate war and not kids games.

  38. The 8th NCA assertion states “All U.S. regions have experienced warming in recent decades.”

    The Anchorage Daily News reported this; “The scientists with the Geophysical Institute’s Alaska Climate Research Center looked at temperatures recorded at 20 “first-order meteorological stations” in Alaska from 2000 to 2010. The stations were spread from Annette in Southeast to Barrow on the Arctic Ocean to Cold Bay at the southwest tip of the Alaska Peninsula. All are operated by professional meteorologists with the National Weather Service, use similar or identical equipment and follow uniform operating procedures.
    Every station pointed to a cooling trend, except Barrow.
    The mean cooling for the average of all 20 stations was 2.34 degrees Fahrenheit. The chilling trend was most pronounced in the Bering Sea region, with King Salmon recording a drop of 4.42 degrees in the first decade of the new century.”

    http://www.adn.com/2013/01/05/2743379/study-shows-alaska-got-colder.html#storylink=cpy

    This story is based off of this report; http://www.benthamscience.com/open/toascj/articles/V006/111TOASCJ.pdf#storylink=relast

    I wish I would have had this data when I wrote an opinion column that was published in the Fairbanks Daily News Miner. A group of young Alaskans were used as sock puppets by the iMatter Campaign, Our Children’s Trust and Witness to sue the State of Alaska to curb CO2 emissions. http://www.mikekinville.com/?p=96

  39. “—global climate marches in lock step with sun spots, length of the sun spot cycle, and intensity of the solar magnetic field. This excellent correlation has long puzzled scientists because even though total solar insolation (TSI) correlates very well with climate…”

    Your definition of “lock step” could use some work: http://www.yaleclimatemediaforum.org/pics/0508_ccm_FigTwo.jpg
    http://woodfortrees.org/plot/uah/plot/pmod/normalise/
    http://woodfortrees.org/plot/gistemp/from:1900/plot/sidc-ssn/normalise/from:1900

  40. Matthew W says:

    Chuckle !!!
    Did they at least get the date correct on the assessment??
    Every thing else was wrong !

  41. bevothehike says:

    Dr Norman Page says:
    ” If anyone has any good ideas as to how to change this unfortunate and unhealthy situation [no voice for skeptics] I would be interested to hear them.”
    Unfortunately most of the media is Liberal biased and with AGW being being turned into a political discussion our chances are poor. My idea would be to demand a scientific debate. Demand it over [and] over until they relent from public pressure…..or their credibility will decline with every demand and passage of time. Debates are viewed by all as non threatening and only someone with either something to hide or nothing to say would decline. The more they decline the more skeptics will be listened to. It won’t take long for the public to start questioning why they won’t debate.

  42. kenw says:

    “….totally ignoring vast amounts of data showing that CO2 always lags warming, even on a short term basis. If CO2 lags warming, it can’t be the cause of the warming!”

    To me this the singular point that we need to pound and pound upon. It is very easy to understand and quite clear. It is very simple to show graphically. it cannot be challenged successfully. It needs to be a centerpiece of the effort.

  43. evanmjones says:

    NOAA stations that meet siting requirements show warming of 0.155°C per decade and NOAA stations that do not meet minimum siting requirements show warming of 0.248 °C per decade. However, the warming reported by NOAA is 0.309 °C per decade, twice as much as shown by the good data (Watts, 2010).

    A little peer review, here. (I think I can venture to call it that.)

    It was Watts (2012).

    Our current (2014) results after indie review, after we removed TOBS biased stations, moved stations and (with regret, but necessary) applied MMTS conversion adjustment (~0.015 C/d) from 1979 – 2008 are as follows:
    Compliant stations: +0.185 C/d
    Non-compliant stations: +0.335 C/d
    NOAA-adjusted data for those stations: +0.325 C/d (+0.315 for all USHCN stations, including the ones we dropped.)

    Same story, of course, but we want to be as correct as we can. I’ll be fighting on the blogs with a knife in each hand to defend our results, so I have to be vewy, vewy careful about all this when we’re hunting Wabetts . . .

  44. Gary Hladik says:

    “Bottom line here is that this statement is obsolete because of the ‘Svensmark process.’”

    I’d be wary of hanging a rebuttal on that point. While Svensmark’s “process” has survived some actual tests (SKY, CLOUD), to my knowledge the full process has not been experimentally demonstrated.

  45. NikFromNYC says:

    “Ice cores clearly show that CO2 increases always follow warming (Fig. 6), not precede warming as would occur if CO2 caused the warming.”

    The mechanism is also backwards in that though it’s well known by anybody that fuzzy drinks release carbon dioxide upon warming up, there is no known mechanism for sudden spikes in carbon dioxide that would precede such warming.

  46. Gary Hladik says:

    evanmjones says (May 13, 2014 at 5:56 pm): “…when we’re hunting Wabetts”

    Heh heh. Good one.

  47. Bill Illis says:

    All the charts in this article are accurate.

    The problem is the pseudo-science-fiction in the NCA report is not.

    We are supposed to be able to trust the people producing these reports. I mean, that is the theory. That is why we rely on scientists.

    Except, it is the complete opposite in this case.

    We can no longer trust climate pseudo-science-fiction writers (and their backers). They cannot be objective because they have invested too much in this theory. Being objective would mean repudiating everything they have been about for 20 years.

  48. RayG says:

    Proof reading check. At the end of the paragraph following fig. 21 you cite Morner 2020. Please check.

  49. fact checker #7483 says:

    in the sea level rise section:
    ..Why couldn’t the so-called scientists who authored the NCA report do the simple math? If they had even read the literature, this analysis has already been published (Morner, 2020)….

    is the 2020 correct?

  50. philjourdan says:

    There is a lot of dynamite information in this article! Thanks to all for the tough work! It will be very useful.

  51. evanmjones says:

    kenw says:
    May 13, 2014 at 5:55 pm (Edit)

    The drops tend to be slower than the rises, bear in mind. That does suggest some knock-on effect of the CO2.

  52. Anymoose says:

    Was there anyone who was silly enough to expect an honest assessment out of the regime?

  53. rogerknights says:

    Typo: “miniscule” should be “minuscule”–it’s from “minute”

  54. Tom J says:

    ‘We’ll first state each assertion made in the NCA report, then test it against real-time observation and data. The report begins with dire predictions based on computer models, so let’s start with that.’

    Hate to say it but Easterbrook is completely wrong here. The report really doesn’t begin with predictions based on computer models. Oh, it begins with dire predictions alright, just not based on computer models. Those dire predictions are based on polling data with questions such as, “who are you going to soundly boot out of office come November?” Science isn’t driving this nonsense, John Podesta is. Anything. Anything at all to distract the public from a job not well done.

  55. evanmjones says:

    Proof reading check. At the end of the paragraph following fig. 21 you cite Morner 2020. Please check.

    For that matter, it’s Mörner, which ought to be spelled “Moerner” in English.

  56. However, whether you call it a greenhouse gas or not, CO2 in the upper troposphere simply cannot do what they say, as the upper troposphere at -17 deg C cannot warm the surface at 15 deg C with any IR radiation sent back to the surface—being warmer the surface reflects the IR, unable to absorb it. It’s simply written-in-stone thermodynamics.

    Where the not-so-bright-buld climate “scientists” screw up is that they conflate their upper troposphere model with the fact that a vessel full of CO2 will warm very slightly by absorbing IR directed at it. This conversion of IR to heat is a very small effect in the atmosphere and undetectable, even with water vapor present. The thousandths of a deg C would also be quickly reradiated as IR and be gone.

    It is CO2 and water vapor in the lower atmosphere that so quickly chill the evening air as the Sun sets; during the day the IR absorption/heat/ IR emission by CO2 is a wash. This night time heat to IR conversion is entirely ignored by the warmists’ models.

    Also, as this slight heating of the air by CO2 converting a small amount of IR to heat would lead to convection and carry energy upward away from the surface. Their models also totally ignore the massive global heat engine of the water cycle that can be responsible for carrying 85% of the energy budget to altitude. This is the missing heat Trenberth is always agonizing over not being able to find. He likes to pretend that it tunneled down to the deep ocean as warm water is likely to do; yeah, right, and the Easter Bunny is real.

  57. Nick Stokes says:

    kenw says: May 13, 2014 at 5:55 pm
    “….totally ignoring vast amounts of data showing that CO2 always lags warming, even on a short term basis. If CO2 lags warming, it can’t be the cause of the warming!”

    To me this the singular point that we need to pound and pound upon. It is very easy to understand and quite clear. It is very simple to show graphically.

    It’s also quite illogical. Yes, in the distant past the main cause for CO2 rise was warming of the sea. 1 °C rise put about 20 Gt carbon in the air.

    But everyone knows that the main cause of CO2 rise now is the carbon we burn. Nearly 400 Gt so far. That’s has nothing to do with the past pattern.

  58. evanmjones says:

    Nick Stokes says:
    May 13, 2014 at 9:26 pm (Edit)

    But everyone knows that the main cause of CO2 rise now is the carbon we burn. Nearly 400 Gt so far. That’s has nothing to do with the past pattern.

    Agreed. But don’t ask “how”. Ask “how much”.

  59. Richard Weiss says:

    Excellent Work Dr. Easterbrook. The claims by the NCA report were even more fantastic than I expected but it does seem the warmistas are losing the debate not to skeptics but to raw reality. So it seems their knee jerk reaction is to shout even louder and make even more astounding claims!

  60. MikeB says:

    Don, this is a shambles. You do, however, make a good case for peer-review in that your work wouldn’t pass it.
    You need to state the provenance of your data and graphs.
    You cannot refute a statement about U.S. temperatures by pointing to a graph of GLOBAL temperatures.

    The graphs showing humidity declining are false. They are, as Nick Stokes points out, graphs of relative humidity which totally contradict the point you were trying to make.

    Ice-core records say nothing about current temperatures (ask someone in your Geology Department).

    Calling an increase from 0.03 to 0.04 an increase of only 0.01% is apiece of sophistry we could do without.

    The really disappointing thing is that some people, who call themselves sceptics, seem to think that your nonsense has some merit. They obviously suspend their critical faculties when the see something that they think agrees with them.

    The NCA report may be bad, but your critique is so much worse.

  61. Bill Illis says:

    Total precipitable column water vapor was 0.064 kg/m^2 above average last month according to RSS (which seems to have the methodology down pat now using satellite measurements).

    That is 0.2% above the long-term mean. So much for the water vapor feedback.

    http://data.remss.com/Vapor/monthly_1deg/tpw_v07r00_198801_201404.time_series.txt

  62. Abbott says:

    Take pity on the Democrats and other left wing governments. With the demise of union membership, a significant proportion of party income has disappeared. Global warming appeals to the Left. Taxpayer handouts in the form of generous grants and subsidies have been a boon to party coffers in the form of returned political donations: taxpayer monies that have been washed, dried and neatly ironed.
    Global warming is essential to Left wing political competitiveness.

  63. indpndnt says:

    Bill Illis, thanks for the link to the data.

    I was curious, so I plotted the vapor content vs. temperature anomaly. You can see those results in this imgur album. It looks like temperature leads in some spots, then lags in others. In that album you will find a cross-correlation plot that shows that the largest correlation is at a lag of 0.

    Since the two are similar, it wouldn’t be a big jump to say that any kind of statistical model that fits CO2 to temperature would be just as effective at fitting CO2 to water vapor, especially if it was to just fit against some kind of longer-term mean, I agree that the data brings some questions to light about CO2 interacts to change water vapor, but I don’t know enough to say if it shows it to be erroneous or just overestimated.

  64. Rud Istvan says:

    A better refutation of the NCA is specific point by specific point, regionally. illegitimi non carborundum. That is possible using the regional CEI plus things like 100 degree days for all major cities (NCA heat waves). The NCA examples used were cherry picked, and most of those are either untrue (northern snowstorms) or gross exaggerations of truth (Texas drought, Oklahoma heat wave). Take downpours.. Yes in northwest, maybe in Southeast. Yes in Ohio River Valley, but not Upper Midwest. Yes in southwest, but not in South, West, or Northwest.
    NCA Translation, cherry pick and highlight two regions where true that downpours increased over past 30 years, and ignore all the numerous other regions where not true. Hope public does not know how to find/ Use the CEI tool. Emphasize present ‘crisis’ with an image of cars piled up by an urban flash flood caused by bad drainage design of a Vermont parking lot in aftermath of Hurricane Irene 2011 (not the downpur definition, but one reason NE is going up- more residual hurricanes and Northeeaster tracks). Immediately segue to Sandy. Finally, close with the 2011 Lake Shore Drive snowstorm ‘downpour’ fiasco, and ignore that the worst snowstorm in Chicago was in 1967, that it also shut Lakeshore Drive, and that there are news pictures from 1967 of cars and buses buried much deeper in a similar LSD traffic jumble.

  65. dr. jay cadbury, phd. says:

    Dr. Jay Cadbury, phd.

    @Nick Stokes

    your point on where the co2 is coming from is not agreed upon, as Murray Salby has demonstrated. How much more co2 is in the oceans than in the atmosphere Nick? Why was so little co2 added to the atmosphere in 1992, but much more in 1998?

    @Zeke and Bob Tisdale

    would you care to post what the running global average temperature is, and the running average of co2 is? I want the historical averages, not the 1800 or 1850 start point. The point is, earth is well below historical average temps and atmospheric co2 levels.

  66. dr. jay cadbury, phd. says:

    @bill illis

    your plot starts at 1988. Nice try though. You, Zeke, Tisdale and Stokes are amateurs. You may know a lot about the subject, but you are not good at writing about it. Zeke, your article on co2 residence time is pathetic. Lord Monckton’s explanation is far superior. Bob, you write about things the general public does not understand and does not care about, like ocean cycles. If you want to help, hammer home that temperature and co2 is below the historical average. Nick, I dont’ care what you do, I’ve seen your act enough times, keep supporting Michael Mann.

  67. dr. jay cadbury, phd. says:

    what we’re seeing here is some jealous contributors who don’t write about the subject very well. Don Easterbrook provides one of the most simple, devastating analysis about the global warming hoax I have ever read.

    @mike B

    really? U.S. temperatures are more important than the global averages? Go back to realclimate.org dude.

  68. dr. jay cadbury, phd. says:

    @stokes, hausfather, tisdale

    you guys often say the rate at which we are adding co2 is unprecendented? Isn’t it true you have only compared back as far as 380,000 years? Are you telling me co2 wasn’t added at an incredible rate during the time of the dinosaurs? I think your analysis on this topic is garbage. Use the entire geological record.

  69. dr. jay cadbury, phd. says:

    @mike b

    okay Mike. So if there were 100 molecules of atmosphere, and co2 increased from 1 part per hundred, to 2 parts per hundred, that is a 200% increase, not a 1% increase? your an idiot and we could do without you.

  70. Mick says:

    Dr. Cadbury, isn’t an increase from 1 pph to 2 pph a 100% increase? Difference divided by the original level: (2-1)/1=1.

    You also may want to study up on basic grammar.

  71. mkelly says:

    Dr. Easterbrook says: “…atmospheric concentration has changed only 0.0065%.”

    Figure 3 shows .065%. Which is correct?

  72. Doug says:

    Help me out here

    I posted this to another board and got this in rebuttal:

    http://www.skepticalscience.com/don-easterbrook-heartland-distortion-of-reality.html

    Is there a reply to these claims?

  73. Danram says:

    Boy, the media are really falling all over themselves trying to breathe life into this particular dead horse, aren’t they? Even USA Today, which is normally fairly free of bias in its reporting, is running a new alarmist global warming (sorry, make that “climate change”) article every two or three days now. It’s both laughable and sad.

  74. Bob Tisdale says:

    dr. jay cadbury, phd. says: “@stokes, hausfather, tisdale
    “you guys often say the rate at which we are adding co2 is unprecendented?”

    Sorry for replying so late. Please quote me chapter and verse where I have said or implied that. And I’m not sure who “you guys” are. Please feel free to expand. Are you aware that I’m a skeptic and a regular author of posts here at WUWT?

  75. Bob Tisdale says:

    dr. jay cadbury, phd. says: “Bob, you write about things the general public does not understand and does not care about, like ocean cycles.”

    Obviously, you’re wrong, because my posts receive above-average traffic and they’re well-commented. If you don’t care about my posts, don’t read them. Simple.

  76. TRG says:

    Nick Stokes says:
    May 13, 2014 at 4:24 pm
    Toma B. says: May 13, 2014 at 2:51 pm
    “I find it very frustrating that guest authors decline to provide the credit/source links for images used in their presentations. From what I can tell, Easterbrook usually is not compliant with this normal courtesy when he liberally “borrows” charts and graphs from others.”

    Hear, hear! Looking at Fig 5, it’s not only borrowed, it’s unreadable. Here is a legible copy which tells that it is from climate4you, and is a plot of relative humidity (RH) at various levels of the atmosphere.

    I think it is probably an accurate plot, but look at what it shows. The top two plots are at quite high altitude, and show declining RH. But RH will decline with warming, even if the amount of water in the air is the same. The bottom plot shows surface RH since 1948. Mid-graph is 1970. According to that, surface RH has actually been increasing since 1970. So specific humidity, the actual proportion of wv in the air, would increase even more.

    Fig 2 is at least attributed. But why compare model predictions of what seem to be surface temperature only with observations of lower troposphere?
    *************************************************************
    You make a fair point, but given that we are talking about very small, if any, temperature changes, I think it’s safe to assume that the absolute humidity is trending in the same direction as the relative humidity.

  77. TRG says:

    Doug says:
    May 14, 2014 at 1:00 pm
    Help me out here

    I posted this to another board and got this in rebuttal:

    http://www.skepticalscience.com/don-easterbrook-heartland-distortion-of-reality.html

    Is there a reply to these claims?
    **********************************************************
    Go to this link and look at figure (a). Notwithstanding Easterbrook’s projections, this shows that the CMIP5/IPPC temperature model is very, very far off for the period from 1998 to present.
    http://www.climatechange2013.org/images/figures/WGI_AR5_FigBox9.2-1.jpg

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