Image:Global Warming Map.jpg

From Global Warming Art

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Description

Global annually averaged surface temperatures

This figure shows the difference in instrumentally determined surface temperatures between the period January 1999 through December 2008 and "normal" temperatures at the same locations, defined to be the average over the interval January 1940 to December 1980. The average increase on this graph is 0.48 °C, and the widespread temperature increases are considered to be an aspect of global warming.

Data source

This plot is based on the NASA GISS Surface Temperature Analysis (GISTEMP), which combines the 2001 GISS land station analysis data set (Hansen et al. 2001) with the Rayner/Reynolds oceanic sea surface temperature data set (Rayner 2000, Reynolds et al. 2002). The data itself was prepared through the GISTEMP online mapping tool, and the specific data set used is available here. This data was replotted in a Mollweide projection with a continuous and symmetric color scale. The smoothing radius is 1200 km, meaning that the reported temperature may depend on measurement stations located up to 1200 km away, if necessary.

Copyright

This figure was prepared by Robert A. Rohde from public domain data.

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References

• [abstract] [full text] [DOI] Hansen, J., R. Ruedy, M. Sato, M. Imhoff, W. Lawrence, D. Easterling, T. Peterson, and T. Karl (2001). "A closer look at United States and global surface temperature change". Journal of Geophysical Research 106: 23947-23963. 
• Rayner, N. (2000). HadISST1 Sea ice and sea surface temperature files. Bracknell, U.K.: Hadley Center. 
• Reynolds, R.W., N.A. Rayner, T.M. Smith, D.C. Stokes, and W. Wang (2002). "An improved in situ and satellite SST analysis for climate". J. Climate 15: 1609-1625. 

Images and pages linking to this file

• Image:1000 Year Temperature Comparison.png
• Image:2000 Year Temperature Comparison.png
• Image:Instrumental Temperature Record.png
• Image:Short Instrumental Temperature Record.png
• Image:Holocene Temperature Variations Rev.png
• Image:Ice Age Temperature Rev.png
• Image:Five Myr Climate Change Rev.png
• Image:65 Myr Climate Change Rev.png
• Image:Phanerozoic Climate Change Rev.png
• List of all images
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• Template:Temperature series
• List of temperature related images
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• 03:28, 4 February 2009 . . 800×596 (216,620 bytes)
• 00:03, 18 November 2005 . . 571×406 (78,382 bytes)