Not just extreme weather anymore, 'extreme climate events' enter the lexicon


Amazon rainforest responds quickly to extreme climate events


A new study examining carbon exchange in the Amazon rainforest following extremely hot and dry spells reveals tropical ecosystems might be more sensitive to climate change than previously thought.

The findings, published online on April 28 in the journal Global Change Biology, have implications for the fate of the Amazon and other tropical ecosystems if greenhouse gas emissions continue to climb.

“There have been a lot of projections of what might happen in the Amazon in the future as global warming intensifies,” said study co-author Noah Diffenbaugh, an associate professor of Earth Systems Science at Stanford’s School of Earth, Energy & Environmental Sciences. “In this study, we are bringing together many different data sources to take a more comprehensive and detailed look at how the Amazon has responded to severely hot and dry conditions that happened in the recent past.”

Net Biome Exchange

Land ecosystems “breathe” carbon dioxide (CO2) in and out during growth and decay, and the amount of CO2 taken up or released by biomes can offer important insights into how ecosystems could be affected by global warming. Because of their vast potential to store and release carbon, tropical ecosystems play a major role in regulating the Earth’s climate. If climate change causes tropical forests to emit large amounts of CO2 into the atmosphere, that carbon loss could amplify the global warming effects of fossil fuel emissions.

The study’s lead author, Caroline Alden, began the study at the University of Colorado’s Cooperative Institute for Research in Environmental Sciences (CIRES) and continued the research as a postdoctoral researcher working with Diffenbaugh at Stanford.

Alden and her colleagues developed a data analysis that combines weather data with CO2 measurements gathered by airplane surveys to calculate how much atmospheric carbon exchange, also known as net biome exchange (NBE), is happening across the Amazon basin. This new analysis allowed the researchers to track down the sources of CO2 absorption and emission in the rainforest during each month over a three-year period.

“By gathering many observations of CO2 in the atmosphere, we gain a sense of how CO2 is distributed above the Amazon, and how that changes in response to extreme climate events,” said Alden, who is currently a research associate at the University of Colorado. “By combining that knowledge of CO2 in the atmosphere with knowledge of where the winds came from in the days preceding the measurements, we can track down the sources of the signals that we see in the air.”

The analysis Alden’s team developed is the first to look at NBE variations month-by-month on regional scales that cover several million square kilometers, filling in a critical gap between very small-scale and larger-scale studies and helping to improve understanding of Amazon climate-carbon interactions.

Shifting Carbon Balance

For their analysis, the scientists calculated NBE flux in the Amazon for the three-year period spanning 2010 to 2012. In 2010, a major drought and unusually high temperatures affected much of the Amazon basin, but conditions had returned closer to normal by 2011 and 2012.

Alden and her team found evidence of very large shifts toward carbon loss to the atmosphere in the Amazon after periods of extreme heat and drought in 2010. What’s more, the shifts were surprisingly fast.

“We see that the carbon balance in the Amazon can change quickly in response to climate events,” Alden said, “Heat anomalies during the wet season are strongly correlated with increased carbon loss in the same month, and lower-than-average rainfall during the wet season is correlated with increased carbon loss in the following month.”

Increasing Heat Stress

It was already known that the 2010 drought had caused large carbon loss from the Amazon. However, the more detailed information developed in the new study allowed the researchers to analyze both the carbon and climate conditions that occurred in different parts of the Amazon as the drought evolved. This new analysis suggests that the loss of carbon may have preceded the onset of drought conditions, when the climate was unusually hot but not yet unusually dry.

“We have very strong evidence that severe heat has been increasing in the Amazon, and that more global warming will intensify this effect,” said Diffenbaugh, who is also a senior fellow at Stanford’s Woods Institute for the Environment. “Our findings suggest that regardless of changes in precipitation, the Amazon could be vulnerable to the increasing heat stress that we know is very likely to accompany further global warming.”

The group also found that in the eastern Amazon, CO2 was still being emitted to the atmosphere in large pulses throughout 2011, months after the severe heat and drought events had occurred. This “legacy” effect could indicate that tropical rainforests can take several years to recover from a major drought, Alden said.

Taken together, these results suggest the Amazon may be more sensitive to heat and drought conditions than previously thought – a finding that does not bode well for tropical ecosystems in the coming decades as the effects of climate change are expected to intensify.

“The Amazon ecosystem is a critical part of the global climate and carbon system, and home to unparalleled biodiversity,” Alden said. “These findings highlight how much more we still have to learn about tropical carbon-climate interactions, and underscore the importance of continued monitoring of the atmosphere in tropical regions.”

The findings also show that carbon emissions from the Amazon have tremendous capability to affect global climate, said John Miller, a study co-author and CIRES researcher at the time of the analysis and now a scientist at the National Oceanic and Atmospheric Administration.

“Better understanding of NBE in the Amazon will continue to help scientists resolve major unknowns in future climate projections,” Miller said, “namely how tropical forest sensitivities to future changes in temperature, rainfall and drought patterns may accelerate global climate change.”


0 0 votes
Article Rating
Newest Most Voted
Inline Feedbacks
View all comments
Steve Case
April 29, 2016 5:46 am

And just remember they aren’t Windmills, they are Wind Turbines.

Reply to  Steve Case
April 29, 2016 6:03 am

No mention of those monstrosities in this BBC program transmitted last night
BBC changing its climate change tune ?
– Sun affects climate change
– Maunder minimum caused Little Ice Change
– CO2 not mentioned once, but in passing ‘eliminate polluting’ power stations
– Fusion and solar are good sources of energy, no mention of wind or bio-fuels
– Anthropogenic warming (presumably is good) might compensate for a future ‘LIA type ‘ cooling.
– NASA’s Dr H appeared few times
– No CAGW views or experts appeared.
It is a small but important step away from relentless propaganda towards the reality.

Reply to  vukcevic
April 29, 2016 6:16 am

That’s old… 2006. Long before the Beeb decided to toe the party line.

Reply to  vukcevic
April 29, 2016 7:26 am

Hi Neil
Yes I realised that, but it could be re-edited, they could take Maunder Minimum out, Beeb could put more anthropogenic nonsense in. If solar-earth climate science was good 10 years ago, no reason while should be bad now, particularly since then we learned that SC24 is going to be low, and solar activity may be winding down for few decades, global warming pause is real etc..
Why revive bad science?
“Long before the Beeb decided to toe the party line.”
Coming as I do from where majority of people toed party line, I know that once the shackles are off the party line will be abandon in a flush.

Dr. S. Jeevananda Reddy
Reply to  vukcevic
April 29, 2016 5:03 pm

I presented a study on Fortaleza precipitation. The data presented 52 year cycle along with sub-multiples of 26, 13 & 6.5 years. Based on the amplitude and phase angles of these four cycles constructed the integrated pattern and projected this upt o 2020. This showed the drought condition after 2001 peak minimum around 208-2010. The drought is a part of natural variation. This presented in my book published in 1993 — originally published in 1984 in a Brazilian Journal.
Dr. S. Jeevananda Reddy

Jenn Runion
Reply to  Steve Case
April 29, 2016 7:07 am

Bird guillotines.

Reply to  Steve Case
April 29, 2016 10:39 am


Reply to  Steve Case
April 29, 2016 12:40 pm

How about ‘quixotic energy-poverty generators’? Just a nod to the classics.

Paul of Alexandria
Reply to  Steve Case
April 29, 2016 3:46 pm

Well, they’re not milling anything.

phil cartier
Reply to  Steve Case
May 1, 2016 6:07 pm

A turbine is an enclosed, rotary, impeller- either driven to pump a fluid, or driven by a fluid for mechanical energy.
A windmill is an open rotary or oscillating structure driven by a fluid.

Miso Alkalaj
Reply to  phil cartier
May 1, 2016 6:15 pm

[This is the impostor who steals other commenters identities. His effort is wasted. Deleted. -mod]

April 29, 2016 5:50 am

Wind Blenders

Reply to  jon
April 29, 2016 6:02 am

Bird Bludgeoners

David Smith
Reply to  SAMURAI
April 29, 2016 7:30 am

Raptor Rotisserie

Reply to  SAMURAI
April 29, 2016 12:08 pm

Avian Abattoirs

Reply to  jon
April 29, 2016 5:20 pm

And do not forget “money wasters”.

Richard Wakefield
April 29, 2016 5:54 am

Ever wondered why there are so many species in the Tropics, especially the Amazon? Take parrots for example, lots of species. Well, the answer is that during ice ages, the rain forest was sequestered to small islands withing a grassland conditions due to the cooler climate. Then during interglacial periods, the rain forest returned, but not before isolated populations of parrots evolved into different directions.
This is normal evolution. Without climate swings we would not have the wonderful diversity of biota on this planet.

Reply to  Richard Wakefield
April 29, 2016 9:22 am

Warmists are not aware that the Rain forests in Brazil was over 50% smaller just 18,000 years ago,yet the CO2 level in the atmosphere at the time was around 180-200 ppm. The world forests at the time was also much smaller as well,so how come there was little CO2 in the atmosphere?
With far less plants around with vast deserts belts,CO2 in the atmosphere should have increased due to lack of sequestration from plants.

Reply to  Sunsettommy
April 30, 2016 5:35 am

Professor Philip Stott 2001: ‘Jungles of the mind. The invention of the tropical rain forest.’
“At the end of the last ice age, only some 12-18000 years ago, the tropics were covered by seasonal savannah grasslands, cooler and much drier than now. There were no rain forests in the Malay Peninsula and much of Amazonia, and, despite the increasing human development of forested space, there are still more rain forests persisting than existed then.
As in Europe and North America, the forests came and went as climate changed; there is no Clementsian “long period of control” under one climate. Beneath many rain forests, there are sheets of ash, a testimony in the soil to past fires and non-forested landscapes.
The whole farrago of scientific gobbledegook becomes painfully obvious in the control myths of the rain forest as ‘the lungs of the world* and as ‘the carbon sinks of the Earth*. What do lungs do? Take a deep breath – they gulp in oxygen and give out carbon dioxide! If the rain forests are indeed ‘the lungs of the world’, they should surely be cut down as quickly as possible! In reality, some do precisely this because of their heavy decomposition systems while, if you truly want trees to take up carbon, you require newly-planted, young vigorous plantations.
The myth is exposed. Rain forests are quite unessential for maintaining the so-called ecological balance of the Earth. Compared with the oceans, the trees are ‘noise’ in the system. We no more need them than we did the forests of Europe, largely cleared by the 17th Century, or Thoreau’s woods in New England.”

Reply to  Richard Wakefield
May 4, 2016 7:22 am

And, it seems to be showing yet another example of First Temperatures Rise, and then CO2 Goes Up.

Paul Westhaver
April 29, 2016 5:56 am

Now the rain forest is a net carbon emitter.
“Because of their vast potential to store and release carbon, tropical ecosystems play a major role in regulating the Earth’s climate. If climate change causes tropical forests to emitlarge amounts of CO2″
I wonder how Bruce Coburn will take the bad news?:
Maybe we need MORE LOGGING?

Winnipeg boy
Reply to  Paul Westhaver
April 29, 2016 10:06 am

Gary Kerkin
April 29, 2016 6:00 am

“We have very strong evidence that severe heat has been increasing in the Amazon, and that more global warming will intensify this effect,” said Diffenbaugh, who is also a senior fellow at Stanford’s Woods Institute for the Environment. “Our findings suggest that regardless of changes in precipitation, the Amazon could be vulnerable to the increasing heat stress that we know is very likely to accompany further global warming.”
Does this suggest that the studies were model based? If so, I wonder if the models take into account the inertia inherent in such large systems? I wonder if they have measured the time constants or just assumed them?

Reply to  Gary Kerkin
April 29, 2016 9:11 am

How can it get much hotter in a region with high humidity?

Reply to  Gary Kerkin
April 29, 2016 10:34 am

That was my thought. Same inertia as with El Niño and La Niña, and happening not far from the same latitudes. Completely reasonable to make that presumption.

April 29, 2016 6:04 am

might, if, might, could be, if, could, suggests, may have, could be, very likely, could, suggest, may be, expected…….is this ‘science'”
“These findings highlight how much more we still have to learn about tropical carbon-climate interactions, and underscore the importance of continued monitoring of the atmosphere in tropical regions.”……………… I understand the ‘science’; you don’t know squat.
“…and underscore the importance of continued monitoring of the atmosphere in tropical regions.”………………..oh, and keep the grants coming.

April 29, 2016 6:06 am

Just wondering … what has been the temperature change in the Amazon over the last 150 years or so?
Has it been more, or less, than the supposed “global average”?

Tom Judd
Reply to  JohnWho
April 29, 2016 7:27 am

Do we really need to know that trivial piece of information? I mean, c’mon, that could confuse the narrative.
sarc 🙂

Reply to  JohnWho
April 29, 2016 9:14 am

It can’t warm up much since it is a humid region.

April 29, 2016 6:12 am

“tropical carbon-climate interactions”
….. eh ?? We’re reaching brain damage levels now.

April 29, 2016 6:16 am

Interesting – Net Biome Exchange (NBE) == 0.00 (long term)
At first glance, this looks like a good way to calibrate a CO2 meter. You know a priori what the answer is, so you can adjust the meter accordingly.
But then we realize that the Amazon river is a huge transport of carbonaceous materials out of the system. So the carbon comes into the system as atmospheric CO2 and at least a small fraction of the carbon leaves within the river system. So for a good carbon balance, one would have to monitor the carbon outflow of the Amazon river into the Atlantic ocean as well. I suppose you could make it work, but I think there are easier ways of calibrating CO2 meters.
Now I know the value of good field work, but the Amazon is buggy, full of diseases, has poisonous critters of every description, and can be just plain miserable. For my money, any island in the West Indies would be far preferable for monitoring CO2. You get the same result and have a much more pleasant vacation.

Reply to  TonyL
April 30, 2016 4:40 am

Correct – but not a problem when you “fly over”. Then you put the collected Data into a computer in an air-conditioned building, make all the usual assumptions of the global-warming models, and publish the speculative results with all the ifs, ands and maybes.

April 29, 2016 6:20 am

***no wonder Stanford student, Sophie, is so upset!
26 Apr: Reuters: Rory Carroll: Stanford climate activists slam university over fossil fuel vote
Stanford University’s announcement on Monday that it will not rid its $22 billion endowment of oil and gas companies has raised the ire of campus climate activists, who said on Tuesday they will protest the decision…
Stanford’s Board of Trustees said that while it will not divest from fossil fuel companies, it would set up a climate task force to solicit ideas from across the Stanford community to address climate change…
***”We feel hurt and disappointed that the Stanford administration has chosen to remain invested in fossil fuel companies, in climate injustice, and in the destruction of our future,” said Sophie Harrison, a student and organizer of Fossil Free Stanford…

Reply to  pat
April 29, 2016 6:48 am

TO: All Students
FROM: Office of Finance and Budgets
Please be aware that Stanford University investments provide an important income stream for a variety of university needs. Therefore, any divestment program would have the following result, per 1.0 billion divestment:
Tuition Increase –
$2,200 / semester, undergraduate students
$2,800 / semester, graduate students
We look forward to having intelligent, informed discussion on your preferred level of divestment and consequent tuition increase.
Director – OFB

Owen in GA
Reply to  TonyL
April 29, 2016 7:22 am

No modern indoctrination center would ever tie tuition to actions. The progressives would not want the indoctrination to socialism to be interfered with by realization of the connection between Actions and Results. Students might then figure out the free stuff ain’t really free and the whole edifice would come crumbling to the ground when the now-confused students all ran for their “safe spaces” all at once!

Reply to  pat
April 29, 2016 6:49 am

Stanford can sell the securities and replace them with lesser performing securities thus making other “fossil investors” wealthier at Stanford’s’ expense, or destroy them making the fossil companies existing owners wealthier. I wonder which Sophie would prefer?
I stand ready to help Sophie win her cause by purchasing those securities at a discount. A wealth redistribution scheme I can fully support.

April 29, 2016 6:26 am

First of all, IPCC’s 2013 AR5 report admits NO global increasing trends of droughts over the past 65 years.
Second, a recent peer-reviewed paper shows global greening has increased 25~50% just since 1980 from increased CO2 fertilization, which would suggest tropical rainforest would thrive under higher CO2 levels.
Third, higher CO2 levels shrink leaf stomata, which decreases plants’ internal water loss, thus making them more drought resistant…
Fourth, the highest density of flora was during times when CO2 levels were around 2,000ppm…
If anything, CO2 levels are still too low…

Bruce Cobb
April 29, 2016 6:41 am

Extreme Climate Stupidity (ECS).

Ric Haldane
April 29, 2016 6:41 am

Sounds like an Amazon carbon tax is in order, There, fixed the problem.

April 29, 2016 6:41 am

IT seems that they are telling us that CO2 is used less efficiently after periods of low rainfall, and higher temps, which does not seem exceptioinal. Plants recovering from a shortage of a key component of photosynthesis and growth. Has the Amazon experienced less net rainfall over the last 50 years? And, aren’t we finding a major greening over the earth along with increased crop yields, even in Amazonia?

April 29, 2016 6:42 am

What is really being said is “We have no idea what will happen, we’re throwing a bunch of stuff at the wall and hoping something sticks. Maybe then we can claim victory and keep up the ruse.”

Reply to  Reality check
April 29, 2016 5:23 pm

Garnished with a sprinkling of that “It’s worse than we thought” evil mojo.

Pamela Gray
April 29, 2016 6:43 am

I have come to understand that post-normal science means that AGW predictions, consensus and confidence in consensus is a random walk through sinks, emitters, cold, hot, wet and dry. Which means we can disregard the following non-random graph as a figment of our imagination. Didn’t happen. Believe in the random scientists.comment image

Pamela Gray
Reply to  Pamela Gray
April 29, 2016 7:22 am
Reply to  Pamela Gray
April 29, 2016 5:27 pm

Factual information is very confusing to people who rely on computer models. It generally entails taking account of a wide variety of sources of information, and occasionally going outside.
That sounds like work to those guys, and messes up their speculatin’, supposin’, and scaremongerin’ sumthin’ awful!

April 29, 2016 6:44 am

‘extreme climate events’
Weather has events. Climate does not, extreme or otherwise.

Tom Halla
April 29, 2016 6:46 am

At least this time they were measuring CO2 emissions, not just playing computer games.

Reply to  Tom Halla
April 29, 2016 7:23 am

They took real measurements, did some analysis, but then had to relate it all to climate change as projected by others to curry favor for their next grant.

Reply to  Chris4692
April 29, 2016 10:56 am

They took CO2 levels while flying a plane!
Just what engine type do you suppose that plane uses?

Reply to  Chris4692
April 29, 2016 11:34 am

Have to wonder whether the exhaust is ahead of or behind the CO2 sensor.

Dems B. Dcvrs
April 29, 2016 6:57 am

“might be more sensitive to climate change than previously thought”
“previously thought” –> house built upon sand, not science, just belief
“might be” –> SWAG
In other words more GW F.U.D.

Chris Schoneveld
Reply to  Dems B. Dcvrs
April 29, 2016 1:05 pm

And what exactly did they think previously?

Dems B. Dcvrs
April 29, 2016 7:00 am

“… how much more we still have to learn about tropical carbon-climate interactions, and underscore the importance of continued monitoring ”
Cry to emotions to ensure the GW Scam continues to get more and more funding.

April 29, 2016 7:14 am

Since the agenda science of climate is edging into health topics they won’t mind being held to medical research standards of conduct and reproducibility, right?

Pamela Gray
Reply to  Resourceguy
April 29, 2016 7:18 am

Which is probably why they are edging that way.

Owen in GA
Reply to  Resourceguy
April 29, 2016 7:31 am

Have you seen the number of retracted medical studies due to poor experimental design? It looks a lot like climate science already (except they actually retract the papers when someone like McKitrick blows statistical holes through the paper). The difference is, if there is a serious methodological problem that isn’t addressed in medicine, victims (patients mistreated as a result) can and do sue for millions of dollars. Climate scientists don’t fix their papers because they can go to the local progressive AG and get the offender pointing out the baloney sued.

April 29, 2016 7:47 am

Models based on an assumption.
I give up.

April 29, 2016 7:54 am

“Climate event” is an oxymoron. “Weather event” makes sense.
“Climate” is a statistical construct, a *long term average* of the weather. The main issue is how may years’ worth of weather does it take to produce a meaningful average. In engineering practice it takes three examples to even estimate an average, and at least ten to be able to estimate the uncertainty of the average.
“Extreme” in statistics would require an example that is more than three standard deviations away from the average (99% level). Obviously one must not only know the average but also have a very good handle on the uncertainty before one can assign the word ‘extreme’.
Unfortunately these alarmists believe ‘uncertainty’ is purely a psychological term.

Bad Andrew
Reply to  tadchem
April 29, 2016 8:57 am

This is so right. An event would be weather by definition.

April 29, 2016 8:45 am

How can a supposed branch of science be so fantasy based. This is ridiculous. Astrology thinks climate science is crap.

Johann Wundersamer
April 29, 2016 8:46 am

The sound of an approaching tornado can alert you to the oncoming storm. Many people say that it sounds like a freight train. Also look for a dark, often greenish-colored sky.
One of the earliest scientific approaches to weather prediction occurred around 300 B.C.E., documented in Aristotle’s work, “Meteorologica.” The ancient Greeks invented the termmeteorology, which means the study of atmospheric disturbances or meteors. Aristotle tried to explain the weather through the interaction of earth, fire, air, and water. His pupil Theophrastus really went to work and wrote the ultimate weather text The Book of Signs, which contained a collection of weather lore and forecast signs. Amazingly it served as the definitive weather book for 2,000 years! (What if they’re still readingthis 2,000 years from now?)
Alden said. “These findings highlight how much more we still have to learn about tropical carbon-climate interactions, and underscore the importance of continued monitoring of the atmosphere in tropical regions.”
What’s the need for Alden to say anything at all – we know that from the start of acricultural
economy there’s weather reporting, documentation, estimation / forecast.
Real science delivers, step by step.

Billy Liar
April 29, 2016 8:48 am

Didn’t someone put up a satellite to measure CO2? No need for airplane surveys of ‘several million square kilometers’.

April 29, 2016 9:10 am

“Heat anomalies during the wet season are strongly correlated with increased carbon loss in the same month”
Heat and water means more rot.
To think that these guys actually claim to be scientists.

April 29, 2016 9:12 am

Technically, they are correct. Today, it’s weather. Tomorrow, it’s climate. Let’s keep our fingers crossed for this continued span of favorable, semi-stable conditions.
The scientific frame of reference has an indeterminate period and scope with accuracy inversely proportional to the time and space offsets from an established frame.

Joe - the climate scientiest
April 29, 2016 9:27 am

Just like that extreme climate event that confined the MWP to that small region of the globe for 300+ years.
Color me a true believer in the supernatural.

April 29, 2016 10:01 am

Back in the real world-
“Normal weather conditions prevailed”
“U.S. farm income experienced a golden period during 2011 through 2014, driven largely by strong commodity prices and agricultural exports-
Wrap Up of U.S. Agriculture for 2015
Normal weather conditions prevailed in most major growing regions around the world in 2015”

April 29, 2016 10:06 am

“Amazonian rainforest was created just 2,000 years ago by climate change that wiped out ancient farmers
Area was grassland until a natural shift to wetter climate 2,000 years ago
Researchers say the find sheds new light on the Amazon’s history – and show it was a savannah rather than the high forest it is today”

April 29, 2016 10:26 am

‘extreme climate events’
It’s Climate English.
”What emerged, say linguists, was a nograj called Climate English [CE].
Historically, the problem with scientific jargon is that it only makes
sense if you understand science. CE, by contrast, only makes sense if
you don’t.’

Bruce Cobb
Reply to  Gamecock
April 30, 2016 6:10 am

Sounds like a variant of Orwell’s “Newspeak”. Control the language, control the mind.

April 29, 2016 10:26 am

In my view, an “extreme climate event” should be an event that covers at least a 30 year period relative to a longer period of a hundred years or more and preferably a thousand years or more. For example, a 30-year period with extreme drought compared to other 30-year periods over hundreds of years. Another example is our current Holocene, which is an unusually warm event relative to the last half million years and has lasted almost 12,000 years. During the Holocene, global average temperatures have been running at least 4C to 6C above the 500,000 year mean. The most recent glacial maximum from about 36,000 to 16,000 years ago when global average temperatures were about 4C to 6C below the 500,000 year mean is another good example of an “extreme climate event”.
On a longer time scale, our current ice age that began with the Pleistocene about 2.6 million years ago is easily the coldest period within to the entire Cenozoic Era that began about 66 million years ago, and thus could be considered an extreme cold long-term climate event. For most of the Cenozoic, from about 10 million to 66 million years ago, global average temperatures were about 4C to 14C higher than the most recent 100 years. Thus, our current Holocene warm interglacial period is “cold” relative to most of the Cenozoic period. Even the most extreme alarmist visions of global average temperature about 8C above the pre-industrial average by 2100 would only put temperatures back where they were for 20 million years, from about 20 to 40 million years ago, and well below the Eocene optimum about 50 million years ago that was about 14C higher.comment image
Most alarmists are much too short-sighted. Our next major “extreme climate event” will likely be the next glacial period that could gradually start any time during few thousand years. A little warming might help to delay it. Below is a graph comparing estimated global average temperatures during our current interglacial as compared to the previous four, based on the EPICA ice core proxy. Only one of the last four was longer than our current interglacial, which is not very good odds.comment image

Pamela Gray
Reply to  oz4caster
April 29, 2016 11:30 am

I conclude you are the author of this graph (I checked your website). Excellent graph. Reminds me of El Nino’s piled on top of each other. Now isn’t that interesting.

Reply to  oz4caster
April 29, 2016 12:58 pm

Pamela thanks, yes I made the graph showing a comparison of the current and last four interglacial warm periods. The broken icon in my comment is to a PNG graph on Wiki showing estimated global temperature anomalies back 500 million years (apparently Word Press does not create a thumbnail for PNG images like it does for GIF and JPG images but you can still click on the broken icon to see the PNG graph at Wiki).
After looking at my graph again, I realized that I misspoke and that only two of the last four interglacials were shorter than our current interglacial. The most recent previous interglacial lasted about 2,000 years longer and the fourth one back lasted about 12,000 years longer. However, the fourth one back seems to match the pattern of the current interglacial better than any of the others. It also had a peak more than 2C warmer than present with a sharp rise after about 13,000 years and then stayed at or above 2C warmer for about 7,000 years … all from natural causes. Probably the best we can estimate from this long-term persistence forecast is that our current interglacial could end at any time in the next few thousand years, or if humanity is very lucky, it might last another 10 to 12 thousand years at most.
The graph of temperature and CO2 from the EPICA ice core that you displayed in a comment above clearly indicates that CO2 remained elevated well after the end of most of the recent interglacial periods and lagged behind in dropping, which suggests that over these time scales it is temperature that controls CO2 and not the other way around. Consequently, increasing CO2 levels are not likely to prevent the next glacial cycle, but any warming that we get in the next hundreds of years from any cause might help to delay the onset. Trying to keep the Earth at a constant climate is a wild and impossible dream at this point.

Joe Lenertz
April 29, 2016 10:35 am

Do trees hate CO2 now? And I thought “climate” was long-term and global, while “weather” was short term and local. So isn’t “climate event” just like “jumbo shrimp” or “honest politician”?

April 29, 2016 11:17 am

Typical terrible research.
Apparently, no control group.
One small session of observations and without preceding or post evidence they’re assuming all kinds of disasters and carbon losses.
No effort to actually make random flights of CO2 measurement in a CO2 generating machine applicable to all of the Amazon; except general assumptions.
No attempt here in 2016 to use the satellite measuring CO2 to validate measurement methods…
The whole pot of sour ash looks cooked from the start to prove their confirmation biases.

April 29, 2016 11:44 am

Glad there has never, ever been an extreme “climate event” before. I would have wiped out the Amazon.

April 29, 2016 11:55 am

Climate events now? I thought an event was, you know, weather. A lot of the Northern Hemisphere has been under heaps of snow lately, does that count as an extreme climate event? Oh, but of course that’s opposite of catastrophic warming. Never mind.

April 29, 2016 12:28 pm

On the headline issue of ‘extreme climate events’, there is in fact a symmetrical historical precident. In 1972 the global cooling scare took off partly due to its promotion by geologists upon discovery of the 100 000 year interglacial cycle. But it also took off due to well advertised extreme weather that year. This lead to an unprecidented level of public and political interest in climatic change. This interest was quickly channelled into proposals for funding a US nation climate program where the extreme events of 1972 were much referred to and referred to as climatic events and as evidence of climatic changes that have already happened–and so as changes that presage other climatic changes ( that, presumedly would be experienced as extreme events). In other words, from the beginning of the global climatic change scares in the global cooling scare, extreme weather events have featured interpreted as, themselves, climatic changes.

Kaiser Derden
April 29, 2016 12:45 pm

there is no such thing a climate change event (i.e. a single storm) …

April 29, 2016 3:43 pm

From the article: “For their analysis, the scientists calculated NBE flux in the Amazon for the three-year period spanning 2010 to 2012. In 2010, a major drought and unusually high temperatures affected much of the Amazon basin, but conditions had returned closer to normal by 2011 and 2012.”
In 2010, a major drought and high temperatures affected much of the central U.S., too. I wonder if there is a connection.
Yeah, the summer of 2010, was one of the hottest in my memory. I spent over $300 a month on water bills, trying to keep my thirsty trees alive.
Don’t know what the CO2 above my head was doing at the time. Probably the same thing it was doing over the Amazon.

Gunga Din
April 29, 2016 3:46 pm

A new study examining carbon exchange in the Amazon rainforest following extremely hot and dry spells reveals tropical ecosystems might be more sensitive to climate change than previously thought.

Hmmm….since such changes in climate have happened before the Industrial Revolution (and some of the changes were rather drastic), we should be relieved because (according to GW theory) they don’t exist anymore? Why worry about what the models say can’t be there?

Hilary Ostrov (aka hro001)
April 29, 2016 4:52 pm

Seems to me that they’ve been searching, testing and grasping for the Holy Grail of climate “communication” for several years now – particularly in the years post-Climategate. And it could well be their multiple failures which have led to – or at the very least contributed to – the more recent desperation seen in their multifarious lawsuits. Not to mention the flurry of so-called scientific “papers” deserving of little more than scorn and/or laughter.

Alan Robertson
April 30, 2016 12:41 am

Might be… have implications IFprojections of what might happen… If climate change causes… that could amplify…analysis suggestsmay have preceded…Our findings suggest… the Amazon could be vulnerable…very likely to accompany…This “legacy” effect could indicate… may accelerate global climate change… is correlated with increased carbon loss… suggests that the loss of carbon may have preceded… the effects of climate change are expected
Accompanied by the requisite appeal for more grant money-
“These findings highlight how much more we still have to learn about tropical carbon-climate interactions, and underscore the importance of continued monitoring…”
Good grief.

April 30, 2016 10:07 am

Better understanding of the climate, that’s the idea we should all focus. As I often use to say, everybody is preoccupied by the climate change, but it is useless to discuss only the future without understanding the main cause of the climate transformation. My opinion is that the ocean and human activity on the ocean (mostly naval wars) has a big contribution in the matter. Aren’t we ignoring that? Shouldn’t we pay more attention to the ocean, besides the CO2 that is so much argued these days?

May 2, 2016 7:41 am

I love that the picture includes an insert of “Batboy”. I remember when he was a fixture on the supermarket tabloids. I wonder how many Alarmists are too young to remember when every trip to the grocery store was a chance to see headlines about alien abductions, Elvis sightings, and of course, “The World Wil End In (insert year)”.
The exact same tabloid-selling headlines that were considered a joke in the 70’s and 80’s are now considered mainstream today.

%d bloggers like this:
Verified by MonsterInsights