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 dataset 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.

Related images

• 
  "Global cooling" of 1965-74

Copyright

This figure was prepared by Robert A. Rohde from public domain data and is incorporated into the Global Warming Art project.

Image from Global Warming Art

This image is an original work created for Global Warming Art. Please refer to the image description page for more information.

လိက်တအ်ဂှ် သၠးကဵုလဝ် အခေါင် သွက်ဂွံ စၠောအ်ကပ်ပဳ၊ ပရး ကီု သီုကဵု ပလေဝ်ပခိုဟ်ပတိုန် အတိုင်သၞောတ်ဝ် GNU Free Documentation License, တုဲ မူ ၁.၂ ဟွံသေင်မ္ဂး မူတြေံနူဂှ် မတြးပတိတ် နကဵု သၞောတ်ဝ်လာင်ဇြေန် Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue

	ဝှာင်ဏအ်ဂှ် စၟတ်သမ္တီလဝ် နကဵုလာင်ဇြေန် Creative Commons Attribution-Share Alike 3.0 Unported ရ၊၊
	မၞးဂှ် ဗွဲမဗၠးၜး - သွက်ဂွံ ပါ်ပရအ် – သွက်ဂွံ စၠောအ်ပပ်ပဳ၊ တြးပတိတ်၊ ဗလး ကမၠောန် သွက်ဂွံ ပကောံနှဴ – သွက်ဂွံ ပလေဝ်ပညဳ ကမၠောန် နကဵု တင်မသ္ဒးဒ္ဂေတ်ဗက် ဗွဲသၟဝ်ဏအ်ဂှ် တင်မစှ်ေစိုတ် – မၞး သ္ဒးဒ္ဂေတ်ဗက် သၞောတ်ဝ် မဖျေဟ်လဝ် စပ်ကဵု အစာချူလိက် ဟွံသေင်မ္ဂး တၠမူတအ်ရောင်၊၊ (ဆဂး နကဵုနဲလဵု အကာဲအရာ ဗီုလဵုလေဝ် ဟွံကဵုကသပ် ဟွံထံက်ဂလာန် ကုမၞး ပ္ဍဲအရာမစကာ ဒြပ်ညးတၞဟ်တအ်ရောင်)။ ပါ်ပရအ် အရာမတုပ်သၟဟ် – ယဝ်ရ မၞး ပလေဝ်၊ ပြံင်လှာဲ ဟွံသေင်မ္ဂး ထပ်ခၞံဗဒှ်တၟိမ္ဂး အရာကမၠောန်တအ် သီုဖအိုတ်ဂှ် သ္ဒးပရးပတိတ် နကဵုသၟဝ် မတုပ် ဟွံသေင်မ္ဂး မသၟဟ် ကုလာင်ဇြေန် ကမၠောန်တြေံဂှ် ဟေင်ရ၊၊
	This licensing tag was added to this file as part of the GFDL licensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue

References

1. 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". J. Geophys. Res 106: 23947-23963.
2. Rayner, N. (2000) HadISST1 Seaice and sea surface temperature files. Hadley Center, Bracknell, U.K.
3. 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. doi:10.1175/1520-0442(2002)015<1609:AIISAS>2.0.CO;2

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derivative works

Derivative works of this file:  Climate-change-template.jpg

• File:Global Warming Map-he.jpg
• File:Opwarming van de Aarde map.png