File:Global Warming Map.jpg

From Global Warming Art

Contents

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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Global Warming Art License

This image is an original work created for Global Warming Art by Robert A. Rohde.

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It is also requested, but not required, that authors send Global Warming Art a copy of any significant publications that include the use of this image. Those interested in commercial and/or higher quality reproduction may also wish to refer to the information for professional republishers.


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. 

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File history

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Date/TimeThumbnailDimensionsUserComment
current03:28, 4 February 2009Thumbnail for version as of 03:28, 4 February 2009800×596 (212 KB)Robert A. Rohde (Talk | contribs)
00:03, 18 November 2005Thumbnail for version as of 00:03, 18 November 2005571×406 (77 KB)Robert A. Rohde (Talk | contribs)

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