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Figure 1(a) shows January-November 2010 surface temperature anomalies (relative to 1951-80) in the preliminary Goddard Institute for Space Studies analysis. This is the warmest January-November in the GISS analysis, which covers 131 years. However, it is only a few hundredths of a degree warmer than 2005, so it is possible that the final GISS results for the full year will find 2010 and 2005 to have the same temperature within the margin of error.
Data.GISS: GISS Surface Temperature Analysis: 2010 - Global Temperature and Europe's Frigid Air
Seeded on Sat Dec 11, 2010 11:01 PM EST
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- Public Discussion (2)
The extreme warmth in Northeast Canada is undoubtedly related to the fact that Hudson Bay was practically ice free. In the past, including the GISS base period 1951-1980, Hudson Bay was largely ice-covered in November. The contrast of temperatures at coastal stations in years with and without sea ice cover on the neighboring water body is useful for illustrating the dramatic effect of sea ice on surface air temperature. Sea ice insulates the atmosphere from ocean water warmth, allowing surface air to achieve temperatures much lower than that of the ocean. It is for this reason that some of the largest positive temperature anomalies on the planet occur in the Arctic Ocean as sea ice area has decreased in recent years.
The ice did not start appearing on Hudson's Bay until Nov. 23 - 34.
http://arctic.atmos.uiuc.edu/CT/animate.arctic.color.0.html
- 2 votes
#1 - Sat Dec 11, 2010 11:05 PM ESTHowever, the highest magnitude of Hansen's "anomaly" comes from the arctic and does not jive with the mean temperatures the Danes have recorded. They also do not show that arctic ice has continued to decrease.
- 1 vote
#2 - Mon Dec 13, 2010 12:49 PM ESTYou're in Easy Mode. If you prefer, you can use XHTML Mode instead. |
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