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Ratio of the Greenland to global temperature change: Comparison of observations and climate modeling results
Author(s) -
Chylek Petr,
Lohmann Ulrike
Publication year - 2005
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2005gl023552
Subject(s) - greenland ice sheet , climatology , global warming , north atlantic oscillation , climate change , global temperature , environmental science , future sea level , global change , temperature record , groenlandia , gcm transcription factors , general circulation model , sea surface temperature , atlantic multidecadal oscillation , ice sheet , geology , cryosphere , oceanography , sea ice , ice stream
Temperature changes over Greenland are of special interest due to a possible melting of the Greenland Ice Sheet and resulting sea level rise. General Circulation Models (GCMs) predict that the temperature changes in Greenland should proceed at a faster rate than the global temperature change. Until now there has been no confirmation that Greenland's long‐term temperature changes are related to the global warming and that they proceed faster than the global temperature change. Using double correlations between the Greenland temperature records, North Atlantic Oscillation (NAO) index and global temperature change we find a region of Greenland that is not affected by the NAO. Using this region as an indicator of Greenland's temperature change that is related to global warming, we find that the ratio of the Greenland to global temperature change due to global warming is 2.2 in broad agreement with GCM predictions.