UAH Global Temperature – still in a holding pattern

While Sea Surface Temperatures are cooling sharply as shown here, global surface temperature is still oscillating around 0.40 to 0.50C for the last four months. This is not surprising as the air temperature is strongly correlated with the SST but lags behind by about 3 months. Expect drops in the months ahead. – Anthony

July 2010 UAH Global Temperature Update: +0.49 deg. C

Br Dr. Roy Spencer, PhD

UAH_LT_1979_thru_July_10

The global-average lower tropospheric temperature remained high, +0.49 deg. C in July, 2010, although the tropics continued to cool as La Nina approaches.

As of Julian Day 212 (end of July), the race for warmest year in the 32-year satellite period of record is still too close to call with 1998 continuing its lead by only 0.07 C:

YEAR GL NH SH TRPCS

1998 +0.62 +0.73 +0.51 +0.90

2010 +0.55 +0.74 +0.36 +0.63

To exceed 1998 as the warmest year, the daily global average temperature for the remainder of this year (1 Aug to 31 Dec, 2010) will need to average above +0.466 deg. C.

As a reminder, five months ago we changed to Version 5.3 of our dataset, which accounts for the mismatch between the average seasonal cycle produced by the older MSU and the newer AMSU instruments. This affects the value of the individual monthly departures, but does not affect the year to year variations, and thus the overall trend remains the same as in Version 5.2. ALSO…we have added the NOAA-18 AMSU to the data processing in v5.3, which provides data since June of 2005. The local observation time of NOAA-18 (now close to 2 p.m., ascending node) is similar to that of NASA’s Aqua satellite (about 1:30 p.m.). The temperature anomalies listed above have changed somewhat as a result of adding NOAA-18.

[NOTE: These satellite measurements are not calibrated to surface thermometer data in any way, but instead use on-board redundant precision platinum resistance thermometers (PRTs) carried on the satellite radiometers. The PRT’s are individually calibrated in a laboratory before being installed in the instruments.]

YR MON GLOBE NH SH TROPICS

2009 1 0.251 0.472 0.030 -0.068

2009 2 0.247 0.565 -0.071 -0.045

2009 3 0.191 0.324 0.058 -0.159

2009 4 0.162 0.315 0.008 0.012

2009 5 0.139 0.161 0.118 -0.059

2009 6 0.041 -0.021 0.103 0.105

2009 7 0.429 0.190 0.668 0.506

2009 8 0.242 0.236 0.248 0.406

2009 9 0.505 0.597 0.413 0.594

2009 10 0.362 0.332 0.393 0.383

2009 11 0.498 0.453 0.543 0.479

2009 12 0.284 0.358 0.211 0.506

2010 1 0.648 0.860 0.436 0.681

2010 2 0.603 0.720 0.486 0.791

2010 3 0.653 0.850 0.455 0.726

2010 4 0.501 0.799 0.203 0.633

2010 5 0.534 0.775 0.292 0.708

2010 6 0.436 0.550 0.323 0.476

2010 7 0.489 0.635 0.344 0.422

YR MON GLOBE NH SH TROPICS

2009 1 0.251 0.472 0.030 -0.068

2009 2 0.247 0.565 -0.071 -0.045

2009 3 0.191 0.324 0.058 -0.159

2009 4 0.162 0.315 0.008 0.012

2009 5 0.139 0.161 0.118 -0.059

2009 6 0.041 -0.021 0.103 0.105

2009 7 0.429 0.190 0.668 0.506

2009 8 0.242 0.236 0.248 0.406

2009 9 0.505 0.597 0.413 0.594

2009 10 0.362 0.332 0.393 0.383

2009 11 0.498 0.453 0.543 0.479

2009 12 0.284 0.358 0.211 0.506

2010 1 0.648 0.860 0.436 0.681

2010 2 0.603 0.720 0.486 0.791

2010 3 0.653 0.850 0.455 0.726

2010 4 0.501 0.799 0.203 0.633

2010 5 0.534 0.775 0.292 0.708

2010 6 0.436 0.550 0.323 0.476

2010 7 0.489 0.635 0.344 0.422

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wayne
August 3, 2010 4:18 pm

Tenuc says:
August 3, 2010 at 12:27 pm
Phil, you should know better. This is weather, not climate, and has no bearing on the future trajectory of oscillating weather regimes. Also, don’t be too keen to rely on satellite data, which use algorithms to translate the raw data to temperature anomalies based on historic patterns, many of which no longer apply.
___
Those ‘historic patterns’ in the satellite adjustment algorithms, just wish we could definitively find if there is some upward trend built in to those patterns used in the algorithms, for as time passes it seems it must be so. The satellite temps are tracking UHI influenced surface temps too closely for this not to be true since satellites should not see or record the UHI component affecting only a small percentage of just the land area.

Jimbo
August 3, 2010 4:32 pm

“This is not surprising as the air temperature is strongly correlated with the SST but lags behind by about 3 months. Expect drops in the months ahead. – Anthony”

The NOAA seems to think the same. Look at the graphs 6 to 8 months from now.
http://www.cpc.noaa.gov/products/analysis_monitoring/lanina/images3/glbT2mSea.gif
I wonder how they are going to hide the decline?

latitude
August 3, 2010 5:10 pm

The fan man says:
August 3, 2010 at 9:58 am
but the average of the decade 2000-2010 is hotter than all other recorded decades before it.
==========================================================
Hotter!! ROTFL
Say that again with a straight face.
You’re not even talking one whole degree!

Joe Miner
August 3, 2010 5:20 pm

@Marge
“Can anyone explain why Spencer’s graph doesn’t show the 13 month running average (red line) after the beginning of 2010?”
To calculate the 13 month running average for a month requires the data from the previous 6 months and the future 6 months.

Amino Acids in Meteorites
August 3, 2010 6:27 pm

NK says:
August 3, 2010 at 8:36 am
there is no catastophic temperature increase result caused by the increase of CO2 in the atmosphere.
Because of the cooling feedback of H2O from rising co2 there could actually be cooling. The climate models that go on and on about warming from co2 do not take H2O into account well.

Amino Acids in Meteorites
August 3, 2010 6:37 pm

Phil. says:
August 3, 2010 at 9:36 am
And yet this July was the hottest month recorded for the troposphere since 1979.
You want the reader to infer that co2 is the cause yet you don’t provide evidence for it. The warmth is from El Nino.
The earth has been cooling since 1998. Yet you want the reader to infer that it is warming.
Your method is called propaganda Phil.
Global warming is not happening. Co2 does not control climate.

Amino Acids in Meteorites
August 3, 2010 7:08 pm

Reginald Newell, MIT, NASA, IAMAP, “a meteorologist whose research concentrated on global air pollution and on the energy”
http://web.mit.edu/newsoffice/2003/newell.html
Said increasing co2 probably causes cooling:

Amino Acids in Meteorites
August 3, 2010 7:10 pm

Roy Spencer on negative feedback from H2O
Part 1, 8:34 video

Amino Acids in Meteorites
August 3, 2010 7:11 pm

Roy Spencer on negative feedback from H2O
Part 2, 8:52 video

markinaustin
August 3, 2010 8:11 pm

ok…so i agree that since we stepped up in 1998 we have stayed more or less level. and for the record, i am HIGHLY skeptical of AGW and am looking forward to nice recovery of ice in the arctic in the next 3 to 5 years….having said that, it seems a bit doubleminded to say it has cooled since 1998 when we are picking a spike year. seems more reasonable to say that it has remained more or less flat in the past decade or that the hottest year on record was now 12 years ago, which is at least interesting when you imagine how much CO2 we have released during that time. it seems that if CO2 was the boogeyman it is made out to be by the alarmists, we wouldn’t go 12 years without a new high, particularly when we have had 3 or 4 El Ninos during that time.
ok…that’s my $.02

Mike A.
August 3, 2010 8:48 pm

“It is amusing seeing Hansen clawing to push 2010 a few hundredths over 1998.
According to his scenario B, 2010 should be more than half a degree warmer than 1998. Even if he gets away with pushing the current year o.01 degrees over 1998 – he is still missing his own forecast by a factor of fifty.”
-Goddard
He who wrote Austin Powers’ stories had Hansen in mind when he depicted Dr. Evil.

Brian D
August 3, 2010 9:04 pm

What I find interesting is the rebound of the 5 and 10 mb readings to levels of a few years ago on Dr. Spencers site. They just spiked up this summer. Rate of increase seems a little greater than normal.

Gail Combs
August 3, 2010 9:13 pm

Enneagram says:
August 3, 2010 at 2:35 pm
Gail Combs says:
August 3, 2010 at 1:21 pm
Is any of those stars near the Katla volcano?….just to buy more popcorn 🙂
___________________________________
No opposite end of Iceland. This looks like possible rumblings of a volcanic sea mount so it could be very interesting depending on how deep the water is.
ere is the eruption of another sea mount. http://www.barking-moonbat.com/index.php/weblog/more_bothersome_volcanoes/

Amino Acids in Meteorites
August 3, 2010 10:04 pm

markinaustin says:
August 3, 2010 at 8:11 pm
it seems a bit doubleminded to say it has cooled since 1998 when we are picking a spike year.
El Ninos are a natural part of climate. If 1998 is an unfair, so to speak, spike then we’d have to go through the entire temperature record and take out all El Ninos and also, to be even handed, so to speak, all La Ninas too. But the are a natural part of climate. If you start at 2001 instead of 1998 there is still cooling till now. But there has been El Ninos and La Ninas since then too.
It probably makes more sense to take a longer time period, say 1000 years. and clearly there has been cooling since then.
http://1.bp.blogspot.com/_S5dFdpF6xm0/Sw1zpDmVKII/AAAAAAAAAvw/aNNJgsf4Q6s/s1600/medieval-warm-period-little-ice-age-chart.jpg
A better graph:
http://pages.science-skeptical.de/MWP/Loehle-2007.html

dennis ward
August 3, 2010 10:40 pm

Not surprising?
Two years ago we had the same predictions of plummeting temperatures here. Yet despite a weak El Nino being well and truly finished along with two years of much lower than normal solar activity, global temperatures are still on the rise and many people are still in denial about it. When are people going to learn that cherry picking a few places that are cooler (or warmer) is completely irrelevant? It looks like all the money spent by fossil fuel companies on propaganda, instead of things like safety precautions in off-shore drilling, has had the desired effect.

David W
August 4, 2010 12:02 am

Jimbo says:
August 3, 2010 at 4:32 pm
“This is not surprising as the air temperature is strongly correlated with the SST but lags behind by about 3 months. Expect drops in the months ahead. – Anthony”
The NOAA seems to think the same. Look at the graphs 6 to 8 months from now.
http://www.cpc.noaa.gov/products/analysis_monitoring/lanina/images3/glbT2mSea.gif
I wonder how they are going to hide the decline?”
Whats really going to be interesting is to see whether we see the anomaly drop below what we saw following the Pinatubo eruption in 1991 and if it does, how long it will hold below zero.
If the anomaly drops below zero going into Winter then holds below zero for up to 12 months this could have significant ramifications for next years Arctic Ice.
The 13 month running mean for UAH temp anomaly has not dropped below zero since 1994 so I would have to anticipate a significant recovery for Arctic Ice if it does so in the coming year.

John Finn
August 4, 2010 12:31 am

Amino Acids in Meteorites says:
August 3, 2010 at 6:37 pm

The earth has been cooling since 1998. Yet you want the reader to infer that it is warming.
Have you got any evidence at all that this is true. Even WUWT posted a graph recently which showed that the OLS trends for all 4 main datasets were positive since 1998.
http://climateinsiders.files.wordpress.com/2010/07/trend.png
This, remember, is during a period when solar activity has declined significantly and, according to Easterbrook, the PDO has shifted (since 1999) to a cool phase. The only reason temperatures peaked higher in 1998 was because the 1997/98 El Nino was considerably stronger than the recent one.

Alexej Buergin
August 4, 2010 12:52 am

” mjk says:
August 3, 2010 at 12:49 pm
Hey Steve, how is your forecast for 2010 low in arctic ice extent shaping up?
MJK”
Just scroll down a bit and read “Sea Ice News #16, posted Aug 1, 2010.
(And now you feel silly, do you not?)

Alexej Buergin
August 4, 2010 1:01 am

” Phil. says:
August 3, 2010 at 9:36 am
And yet this July was the hottest month recorded for the troposphere since 1979.”
For some reason Phil. does not want to say where he got this information from. It cannot be AQUA ch5, since even simpletons know the difference between “troposphere” (something rather complicated) and the 600hPa-layer (something rather simple). But who publishes the temperature of the troposphere that fast?

August 4, 2010 5:44 am

Alexej Buergin says:
August 3, 2010 at 11:48 am
” Phil. says:
August 3, 2010 at 9:36 am
And yet this July was the hottest month recorded for the troposphere since 1979.”
Please add the source.

I was referring to RSS and Spencer’s site
http://discover.itsc.uah.edu/amsutemps/execute.csh?amsutemps
which has been showing temperatures higher than any previous values over the 79-09 period. However yesterday Spencer made an adjustment to his site which had the effect of shifting the 2010 values lower wrt the rest.
NK says:
August 3, 2010 at 11:11 am
But as I said above, UAH does invalidate the IPCC and Hanson models. In short the AGW alarmists models are busted and must be disregarded by any honest person. Instead, the honest will continue to watch the monthly UAH data and interpolate and extrapolate that data and follow it where it leads, not torture the data to justify a political agenda (see Hanson, Mann, Romm, Jones, Gore et al.) Are you an honest man Phil?

It’s very difficult to follow the UAH data since their algorithm is constantly being changed, as reported above they have just done another ‘intercalibration’ and the results have changed yet again. That’s the fourth change this year, the RSS results seem to be a much more stable source.
Tenuc says:
August 3, 2010 at 12:27 pm
Phil. says:
August 3, 2010 at 9:36 am
“…And yet this July was the hottest month recorded for the troposphere since 1979…”as no bearing
Phil, you should know better. This is weather, not climate, and has no bearing on the future trajectory of oscillating weather regimes. Also, don’t be too keen to rely on satellite data, which use algorithms to translate the raw data to temperature anomalies based on historic patterns, many of which no longer apply.

The data I was referring to were not anomalies but actual temperatures.

August 4, 2010 7:56 am

Alexej Buergin says:
August 4, 2010 at 1:01 am
” Phil. says:
August 3, 2010 at 9:36 am
And yet this July was the hottest month recorded for the troposphere since 1979.”
For some reason Phil. does not want to say where he got this information from.

Answered earlier, you’ll just have to curb your impatience and wait for the vagaries of the penalty moderation imposed on me, because I have an ‘edu’ email address, to pan out. By the way you would come over as less snarky if you said ‘has not yet said’ rather than the untrue ‘does not want to’.
It cannot be AQUA ch5, since even simpletons know the difference between “troposphere” (something rather complicated) and the 600hPa-layer (something rather simple).
Perhaps that simpleton would be advised to learn about the AQUA ch5, if he did he would find that it includes data from throughout the troposphere and is not confined to a single layer, but then what would you expect from a simpleton?
Look up Weighting functions, for Ch 05 it ranges from the surface to ~20km, peaking at ~5km.
But who publishes the temperature of the troposphere that fast?
UAH, RSS to name two.

August 4, 2010 8:03 am

Amino Acids in Meteorites says:
August 3, 2010 at 6:37 pm
Phil. says:
August 3, 2010 at 9:36 am
“And yet this July was the hottest month recorded for the troposphere since 1979.”
You want the reader to infer that co2 is the cause yet you don’t provide evidence for it. The warmth is from El Nino.

Really, I didn’t mention CO2, the warmth in 1998 was also from El Niño
The earth has been cooling since 1998. Yet you want the reader to infer that it is warming.
What the reader infers is up to him, the facts are the facts.
Your method is called propaganda Phil.
Global warming is not happening. Co2 does not control climate.

Your spin seems more like propaganda to me, absolute opinions presented as facts.

Gail Combs
August 4, 2010 9:19 am

Amino Acids in Meteorites says:
August 3, 2010 at 10:04 pm
markinaustin says:
August 3, 2010 at 8:11 pm
it seems a bit doubleminded to say it has cooled since 1998 when we are picking a spike year.
….It probably makes more sense to take a longer time period, say 1000 years. and clearly there has been cooling since then.
http://1.bp.blogspot.com/_S5dFdpF6xm0/Sw1zpDmVKII/AAAAAAAAAvw/aNNJgsf4Q6s/s1600/medieval-warm-period-little-ice-age-chart.jpg
______________________________________________________________________
That is exactly what this paper did. It looked at the entire Holecene in the Arctic:
Temperature and precipitation history of the Arctic
“..Solar energy reached a summer maximum (9% higher than at present) ca 11 ka ago and has been decreasing since then, primarily in response to the precession of the equinoxes. The extra energy elevated early Holocene summer temperatures throughout the Arctic 1-3° C above 20th century averages, enough to completely melt many small glaciers throughout the Arctic, although the Greenland Ice Sheet was only slightly smaller than at present… As summer solar energy decreased in the second half of the Holocene, glaciers reestablished or advanced, sea ice expanded, and the flow of warm Atlantic water into the Arctic Ocean diminished. Late Holocene cooling reached its nadir during the Little Ice Age (about 1250-1850 AD), when sun-blocking volcanic eruptions and perhaps other causes added to the orbital cooling, allowing most Arctic glaciers to reach their maximum Holocene extent…”
This paper also agrees that we are at the point in the earth’s Milankovitch cycle that should usher in an ice age. The biggest question of course is why we are not covered in ice yet.
Lesson from the past: present insolation minimum holds potential for glacial inception (2007)
“Because the intensities of the 397 ka BP and present insolation minima are very similar, we conclude that under natural boundary conditions the present insolation minimum holds the potential to terminate the Holocene interglacial. Our findings support the Ruddiman hypothesis [Ruddiman, W., 2003. The Anthropogenic Greenhouse Era began thousands of years ago. Climate Change 61, 261–293], which proposes that early anthropogenic greenhouse gas emission prevented the inception of a glacial that would otherwise already have started….”
Orthodox Climate Scientists assume “early anthropogenic greenhouse gas emission prevented the inception of a glacial that would otherwise already have started… The biggest problem with this part of the CAGW theory, is it assumes no changes in the energy from the sun as received by the earth. However during the 20th century the sun has been very active according to this paper and NASA This is no longer true as we enter the new century according to the Solar Dynamics Observatory Mission News
Therefore actual data shows the earth is gradually headed downhill towards another glaciation, the only question is when and how. A quiet sun, cool ocean phases and a major volcanic eruption would be my guess as the trigger point. CO2 warming can not counteract the combined effects of the other big three. As the oceans cool the rate of CO2 absorption will increase.
Abrupt Climate Change: Should We Be Worried? – Woods Hole Oceanographic Institution
“Most of the studies and debates on potential climate change, along with its ecological and economic impacts, have focused on the ongoing buildup of industrial greenhouse gases in the atmosphere and a gradual increase in global temperatures. This line of thinking, however, fails to consider another potentially disruptive climate scenario. It ignores recent and rapidly advancing evidence that Earth’s climate repeatedly has shifted abruptly and dramatically in the past, and is capable of doing so in the future.
Fossil evidence clearly demonstrates that Earthvs climate can shift gears within a decade….
But the concept remains little known and scarcely appreciated in the wider community of scientists, economists, policy makers, and world political and business leaders. Thus, world leaders may be planning for climate scenarios of global warming that are opposite to what might actually occur…

As far as I am concerned neglecting change towards a COOLING world is down right criminal negligence – my biggest gripe with CAGW.
We are so busy watching the yapping little poodle we can not see the mammoth that just walked into the room.

Marge
August 4, 2010 11:25 am

Me “Can anyone explain why Spencer’s graph doesn’t show the 13 month running average (red line) after the beginning of 2010?”
Joe Miner says:
August 3, 2010 at 5:20 pm To calculate the 13 month running average for a month requires the data from the previous 6 months and the future 6 months.
Thanks for your response, Joe. That definition would explain why the last average is for Jan 2010. So, one would need to wait until Jan 2011 to compare the peaks in the 13 month running average UAH Global Temperature Anomaly for 1998 and 2010? Is that right?

August 4, 2010 4:00 pm

Alexej Buergin says:
August 4, 2010 at 1:01 am
” Phil. says:
August 3, 2010 at 9:36 am
And yet this July was the hottest month recorded for the troposphere since 1979.”
For some reason Phil. does not want to say where he got this information from. It cannot be AQUA ch5, since even simpletons know the difference between “troposphere” (something rather complicated) and the 600hPa-layer (something rather simple). But who publishes the temperature of the troposphere that fast?

Not true I responded before your post and afterwards, you should ask the moderators what they’ve done with my posts.