Warmest January on record for the lower atmosphere
Earth's lower atmosphere recorded its warmest January on record last month, according to data from both the University of Alabama, Hunstville (UAH) and Remote Sensing Systems (Figure 1). The satellite measurements used to take the global temperature of the lower atmosphere began in December 1978, using the Microwave Sounding Unit (MSU) on polar-orbiting satellites. The January 2010 temperature anomaly was an impressive 0.72°C above the 1979 - 1998 average, easily beating the previous record of 0.59°C set in January 2007. Last month's anomaly was the 3rd warmest anomaly for any month, falling just 0.04°C cooler than the record warmest anomalies of 0.76°C from February and April 1998. The January 2010 satellite-measured temperatures continued a trend of very warm conditions we've seen in the lower atmosphere since the current El Niño event began in June 2009. Record high temperatures occurred in November 2009, and were the second highest on record in both July and September 2009, according to UAH. The record-breaking temperatures in the lower atmosphere are due to the heating of the atmosphere by the strong El Niño event that has been heating the waters of the Central and Eastern Pacific since June 2009, combined with the global warming trend of the past few decades. Since we are currently at the lowest level of solar output in decades, the Earth is currently about 0.1°C cooler than if we were near the maximum of the 11-year sunspot cycle. Had we been near solar maximum, we would have set an all-time warmest lower atmosphere temperature anomaly record last month.(Note, though, that there is about a 2-year time lag between solar maximum and when Earth's global temperature responds). It will be interesting to see if the current El Niño event, which is quite a bit weaker than the record-strongest El Niño of 1998, is capable of making 2010 beat 1998 for honors as the warmest year on record in the lower atmosphere.
Figure 1. Temperature of the lowest 8km of the atmosphere measured by satellite via the MSU instrument flown on polar-orbiting satellites between 1979 - 2010. Image credit: Dr. Roy Spencer, University of Alabama, Hunstville.
Real-time display of atmospheric temperatures measured by satellite
The University of Alabama, Huntsville has a handy interactive plotting page that lets one plot up the historical and near-real-time satellite measurements of Earth's global average temperature at various levels of the atmosphere. These temperatures are measured by the MSU instrument on the polar-orbiting NOAA-15 satellite. Note that this is a different instrument than the AQUA satellite's MSU instrument used by UAH to formulate their official monthly global temperature anomaly data set. The two satellites give similar results, although NOAA-15 requires an additional correction to account for drift of the satellite.
Figure 2. Temperature of the global atmosphere at 14,000 feet (4.4 km) as measured by the MSU instrument on the polar-orbiting NOAA-15 satellite. This instrument has been flying since August 1998. The 20-year average (yellow line) and 20-year record highs (pink line) are for the period 1979 - 1998, using versions of the MSU instrument that flew on older satellites. The most recent data (green line), as of February 15, 2010, are marked by a white square, and have now fallen below the record for the date set in 1998. Note that during July 2009, November 2009, and January 2010, record high temperatures were measured at 14,000 feet altitude. A full description of the data is available from the University of Alabama, Hunstville.
Error sources in global atmospheric temperatures measured by satellite
Satellite-measured temperatures of Earth's atmosphere, in my judgment, are inferior to using the surface based system of ground stations and ocean buoys for measuring global temperature changes. I have two reasons for saying this:
1) The satellite temperatures show large global increases when there is an El Niño event. While the surface also experiences an upward spike in temperatures during an El Niño, it is much less pronounced than the atmospheric heating that occurs. Since we live at the surface, those temperatures are more relevant.
2) According to a description of the MSU data available on the Remote Sensing Systems web site where the data is archived,
"The instruments in the MSU series were intended for day to day operational use in weather forecasting and thus are not calibrated to the precision needed for climate studies. A climate quality dataset can be extracted from their measurements only by careful inter-calibration of the eleven distinct MSU instruments."
In other words, it's very tricky to make an accurate measurement of Earth's temperature going back to 1979, when satellite measurements began. You have to merge data from eleven separate satellites, whose instruments were never designed to make the kind of precise long-term climate measurements that are being asked of them. While surface stations also have error sources, I believe that the uncertainty in the satellite-based global temperature measurements are higher.
Dr. John Christy of the University of Alabama, Huntsville, made a series of efforts to perform the careful inter-calibration needed beginning in the 1990s, and for over a decade successfully defended his conclusion that the MSU instruments were showing a much lower level of tropospheric warming than what climate models predicted. Christy was probably the most quoted scientist by the "greenhouse skeptics" during that period, and testified numerous times before Congress about his findings. This discrepancy was a prime argument Senator James Inhofe (R-Oklahoma) used in his famed 2003 speech when he referred to the threat of catastrophic global warming as the "greatest hoax ever perpetrated on the American people." Greenhouse contrarian Dr. S. Fred Singer, who has probably more Congressional testimony about global warming under his belt than any other scientist, headlined his SEPP website for many years with the quote, "Computer models forecast rapidly rising global temperatures, but data from weather satellites and balloon instruments show no warming whatsoever. Nevertheless, these same unreliable computer models underpin the Global Climate Treaty." Michael Crichton also used the tropospheric warming discrepancy to give climate models a bad rap in his State of Fear novel. However, a series of papers published in 2004 and 2005 showed that the satellite inter-calibration methods used by Christy were incorrect. Christy conceded that his analysis had been in error, and participated in writing a statement put out by NOAA's Climate Change Science Program that detailed the error.
Climate change contrarians continue to prefer using the UAH satellite data to look at global temperature trends, since that data set shows less warming than the regular surface station data sets, and rates 1998 as the warmest year on record. The UAH data shows that in the 31-year period from 1979 - 2009, Earth's lower atmospheric temperature warmed by 0.13°C per decade. A separate analysis of the satellite data by Remote Sensing Systems (RSS) puts this number at 0.15°C per decade. For comparison, NASA's GISS and the UK HadCRUT surface data sets (which don't use satellite data) show warming of 0.16°C and 0.15°C per decade, respectively. You can generate these numbers yourself, using the excellent woodfortrees.org plotting tools. The amount of global warming predicted in the 2007 IPCC report for the period 2010 - 2030 was 0.20°C per decade, so we are running about 25% below this predicted level of warming, when averaging over the past 31 years.
For further reading: I have a 2006 blog post on this, and realclimate.org has a technical discussion.
Portlight continues relief efforts in Haiti
The Portlight.org disaster-relief effort continues in Haiti, with another container of specifically-requested medical supplies being shipped today. At the request of Portlight's on-site coordinator, Richard Lumarque, Portlight is committed to sending another container with 500 tents plus food and water. The cost of each shipment is $4300, so your donations are greatly appreciated! Please visit the Portlight.org blog to learn more and to donate. Floodman's blog has the latest info on Portlight's plan for Haitian relief.
Figure 3. Richard Lumarque, Portlight's on-site coordinator in Haiti, poses with double-amputee Darline Exidor, who received a wheelchair from Portlight. Portlight's team of ten relief workers has been laboring full-time the past two weeks to deliver donated supplies and assess the needs of the earthquake survivors.
Next post
I'll have a new post on Thursday or Friday.
Jeff Masters
Reader Comments
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do you have any comments on the invest in the central pacific
What is that called, when the observed, the empirical evidence, does not match the scientific, written data and charts?
Shoot, even I don't even know what I'm talking about before I finish my second cup of coffee...
Link
You mean, aside from the fact that the trade winds are going in the wrong direction?
All I know is that Dallas-Ft Worth is averaging -9.2F normal for the month of 2-10, even if we had above normal temps for the rest of this month, it looks like one of the coldest stretches is DFW in years. Meanwhile Barrow & Fairbanks, AK are averaging +8-+10F normal. Climate variability is an amazing creature!
yes
the chances are zip of the CPAC invest being able to get into the EPAC. Trade winds are completely wrong.
And as the song goes...I dont make it rain....I think thats global warming! suey! suey! now watch me shut this thing down!!
Whose blog is this? That's right, Dr. Masters! If he wants to talk about hotdog vendors in NY city he can...
Another one bites the dust!
**POOF!**
Who's World Wide Web is this? If I want to say what I want I can.
Oh, Flood... ain't nothing like a dirty water dog on the streets of Manhattan...
When's lunch?
15:41 GMT le 17 février 2010
I like to write on weather and climate topics that are of interest and importance to a wide audience, not just to tropical enthusiasts.
The CP invest is at about 3N, which is probably too close to the Equator to leverage the Earth's spin and get going as a tropical depression. If it can push as far north as 8N, it would have a better chance, but there is more shear up there, too. The GFS model shows Invest 90C will hold together for a few days, so it will be interesting to watch.
Jeff Masters
Whose site is this? A little respect for your host; if you came into my house as a guest and started talking trash I would have every right to ask you to leave; in this case I have every right to ignore you...
I've been wondering what happened to you. You used to be someone to listen to, but these days you're totally negative; you haven't had a positive thing to say in I don't know how long...
Link
I agree...
LOL
So all the lefties should leave. I don't no if i am a lefty or a righty..... maybe i should just stay.
Thumbs up
Rita, this is the phrase that (might) upset me -- but I don't like to judge before I understand -- excuse me if I'm being thick, or slow, or older than the "Flood" (because I AM, lol)...
You don't ACTUALLY mean shut Doc's blog down, do you?
Please explain, as I've seen you use this phrase before...and I like to make an informed decision, before I decide to make go "poof" or not.
I COULD take offense...as I AM a lefty-left -- I'm actually left-handed...as well as a bleeding-heart PRAGMATIC east-coast pinko relic-of-the-60's... :)
P.S. That was truly decent of Dr. Jeff to respond to you, was it not?
TUESDAY 9 A.M.
MAJOR TROUGH TO BUCKLE INTO THE EAST NEXT WEEK WITH COLDEST AIR MASS RELATIVE TO NORMAL TO ATTACK BEHIND MAJOR WINTER STORM.
Now that I have your attention, the post on this will come later.
Models, and the European is now in the waffling zone, are having trouble with the phasing over the East. Again, the reasons are 1) Mega cold air, not recycled stale maritime air, will get into the pattern next week, upping the baroclinic (feedback) ante. 2) Here comes the southern branch, upping the ante.
More later.
Ciao for now. ****
NWS Ft Worth-Dallas, TX mentioned the Siberian Pool of bitterly cold air, but they are afraid to reach out and make a definate forecast, due to the model discrepancy! But they're watching it closely.
AND FINALLY...THERE IS SOME VERY COLD AIR ACROSS FAR NORTHERN
CANADA THAT WILL SLIDE SOUTH INTO NORTH CENTRAL CANADA BY THE
WEEKEND. DESPITE SIGNIFICANT MODEL DIFFERENCES...THERE IS A
GENERAL CONSENSUS TO DAMPEN THE WESTERN CANADA RIDGING BY THE
MIDDLE OF NEXT WEEK THEREBY MAKING IT LESS LIKELY THAT A CHUNK OF
THIS VERY COLD AIR WILL BE ABLE TO HEAD SOUTH INTO THE CENTRAL AND
SOUTHERN PLAINS...BUT WILL MONITOR THIS CLOSELY.
lol! no its in the song thats on the radio
New DIL in Maui might have to make room for Mommy.
Climate...
we all know it has been cold...but how cold? The average
temperature for Houston since December 1 2009 has been 49.1
degrees. This is the 7th coldest Dec 1 through Feb 15th on record.
The coldest Dec 1 through Feb 15 was in 1977-78 with an average
temperature of 46.3 degrees. The average temperature in Feb (1st
- 15th) for Houston has been 46.8 degrees...this is the 8th
coldest Feb on record. Hobby Airport has had an average
temperature of 47.7 which is the sixth coldest February on record
and almost 9 degrees colder than normal. The first 15 days of the
month have been the 11th coldest for Galveston (49.0 degrees).
Galveston average temperature thus far has been a whopping 8.0
degrees colder than normal.
Okey-dokey. I was a bit slow on the downbeat...but even monkeys learn (mixed metaphor?) Need. More. Coffee...
http://www.youtube.com/watch?v=EksaafuZhl0
Now we can start thinking about the Ol' 2010 Hurricane Season in earnest.
Should be interesting stuff.
National Hurricane Conference 2010,FACEBOOK
Category:
Organizations - Non-Profit Organizations
Description:
The primary goal of the National Hurricane Conference is to improve hurricane preparedness, response, recovery and mitigation in order to save lives and property in the United States and the tropical islands of the Caribbean and Pacific. In addition, the conference serves as a national forum for federal, state and local officials to exchange ideas and recommend new policies to improve Emergency Management.
To accomplish these goals, the annual conference emphasizes:
* Lessons Learned from Hurricane Strikes.
* State of the art programs worthy of emulation.
* New ideas being tested or considered.
* Information about new or ongoing assistance programs.
* The ABC's of hurricane preparedness, response, recovery and mitigation -- in recognition of the fact that there is a continual turnover of emergency management leadership and staff.
Has JB released his annual prediction of an apocolypto-cane destroying the northeast yet?
An excellent reason why Global Warming now is like Politics and Religion -- DO NOT talk about them at work. That bank could have lost a customer.
Hey, Pat, I'll be there teaching on April 1 at 3:30 p.m.... Just in case anyone finds themselves there and wants to sit in.
I agree one hundred perent; the jury is still out on CC though many seem to have decided for themselves...there are a lot of masters of quantum physics in here...LOL
Inquiring Minds Want to Know
Oh gosh, how did you get the April Fool's Day slot?!
That day should be reserved for the (bad words, acronyms...take your pick)!!!
LOL...guess he didn't see that Canada is way down on their average snowfall and are in the midst of the warmest winter on record...
Cognitive Dissonance!! Thank you, been trying to think of that since Doc posted new entry!
Feel much better now...
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