Dr. Jeff Masters' WunderBlog

2005: Warmest year on record
Posted by: Dr. Jeff Masters, 18:57 GMT le 25 janvier 2006 +0
A study released by NASA yesterday confirmed that 2005 was the warmest year on record, narrowly beating out 1998. That year a strong El Niño--a warm water event in the eastern Pacific Ocean--added significant warmth to global temperatures. The new record was set without the help of an El Ni�o. This suggests that a very substantial warming trend is affecting the globe and more "warmest years ever" will continue to occur in this decade--particularly if they are El Niño years. Global warming since the middle 1970s is now about 0.6° C (1° F ). Total warming in the past century is about 0.8° C (1.4° F). The five warmest years over the last century have occurred in the last eight years. Reliable instrument records of global temperatures extend back to about 1880, but the consensus scientific view is that the current level of warmth has been unmatched for at least the past 125,000 years.



Figure 1: (Top) Global annual surface temperature relative to 1951-1980 mean based on surface air measurements at meteorological stations and ship and satellite measurements for sea surface temperature. The blue segments represent the uncertainty of of the measurements at the 95% level. (Bottom) Temperature anomaly for 2005 calendar year. Image credit: NASA Goddard.

The plot of 2005 temperature anomalies shows that virtually all land areas across the globe were warmer than average in 2005. More warming was observed in the Northern Hemisphere than the Southern Hemisphere, and the U.S. had its 13th warmest year on record. The Arctic had the most warming, helping make the extent of summer ice coverage over the Arctic Ocean in 2005 the lowest ever measured. It's sobering to note that even the Antarctic showed a net warming for 2005. The Antarctic had been the only land area on the globe to have cooler than average temperatures the past decade. If 2005 signals an end to this Antarctic cooling trend, we can expect a higher rate of global sea level rise in coming years as Antarctic melting increases.

Jeff Masters
Categories: Climate Summaries
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251. atmosweather 03:16 GMT le 28 janvier 2006    
Hey Tony :)

It is great to see you here. We are all very grateful that you can find time to post in your most difficult of situations. I too am going through some very tough times right now but friends like yourself are always comforting to me and make me feel a lot better about life.

Have a great night everyone,

Rich
Member Since: 24 septembre 2005 Posts: 33 Comments: 9255
252. KatrinaRitaWilmaZeta 03:35 GMT le 28 janvier 2006    
hey atmosweather and hurricanechaser mail for you too
253. KatrinaRitaWilmaZeta 03:38 GMT le 28 janvier 2006    
and 3M to go to the next hurricane year oh boy what will we see
254. observer12 04:09 GMT le 28 janvier 2006    
I thought some of you may appreciate a different perspective on the global warming debate. :)

Link
255. atmosweather 04:19 GMT le 28 janvier 2006    
I LOVE THE ONION!!!
Member Since: 24 septembre 2005 Posts: 33 Comments: 9255
256. Skyepony (Mod) 04:35 GMT le 28 janvier 2006    
Observer~ that was too funny:P but the snowwoman from Chicago, now than near broke my heart.
Member Since: 10 août 2005 Posts: 144 Comments: 29374
257. KatrinaRitaWilmaZeta 04:50 GMT le 28 janvier 2006    
atmosweather mail for you
258. TampaSteve 21:16 GMT le 30 janvier 2006    
michalp wrote:

"americans can do no wrong, humans can do no wrong."

We're not saying America is perfect, or that humans are perfect, but the loony left's chant is "America can do no right", which is ignoring reality.

The left's idea of Globalism would be economic suicide for the USA. The Kyoto Treaty is a big scam, and the USA was smart to reject it.

BTW, I agree with chaser...there is no definitive empirical evidence that humans are primarily responsible for any warming trend in the climate. The earth has been far warmer, and CO2 concentrations far higher, in the past (long before the industrial revolution), and the Earth survived...we didn't become like Venus, and we're not going to...at least not for a few billion years or so.

Relax, folks...have a beer...life is good...
259. riverotter1948 17:18 GMT le 28 décembre 2008    
Cretaceous levels of CO2 have been estimated at 6 - 8 times higher than today. Why wasn't there a "runaway greenhouse" effect then like all the hysterical doomsayers are predicting for our future? In fact, since the sun's energy reaching the earth now is estimated to be lower than during the Cretaceous, isn't there less chance that there could be a "runaway greenhouse" effect now?

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About JeffMasters
Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.

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