Decadal variations in the global atmospheric land temperatures
Interannual to decadal variations in Earth global temperature estimates have often been identified with El Nino Southern Oscillation (ENSO) events. However, we show that variability on time scales of 2-15 years in mean annual global land surface temperature anomalies T-avg are more closely correlate...
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ftoregonstate:ir.library.oregonstate.edu:47429f65c 2024-09-15T18:23:32+00:00 Decadal variations in the global atmospheric land temperatures Muller, Richard A. Curry, Judith Groom, Donald Jacobsen, Robert Perlmutter, Saul Rohde, Robert Rosenfeld, Arthur Wickham, Charlotte Wurtele, Jonathan Statistics https://ir.library.oregonstate.edu/concern/articles/47429f65c English [eng] eng unknown American Geophysical Union https://ir.library.oregonstate.edu/concern/articles/47429f65c Copyright Not Evaluated Article ftoregonstate 2024-07-22T18:06:03Z Interannual to decadal variations in Earth global temperature estimates have often been identified with El Nino Southern Oscillation (ENSO) events. However, we show that variability on time scales of 2-15 years in mean annual global land surface temperature anomalies T-avg are more closely correlated with variability in sea surface temperatures in the North Atlantic. In particular, the cross-correlation of annually averaged values of T-avg with annual values of the Atlantic Multidecadal Oscillation (AMO) index is much stronger than that of T-avg with ENSO. The pattern of fluctuations in T-avg from 1950 to 2010 reflects true climate variability and is not an artifact of station sampling. A world map of temperature correlations shows that the association with AMO is broadly distributed and unidirectional. The effect of El Nino on temperature is locally stronger, but can be of either sign, leading to less impact on the global average. We identify one strong narrow spectral peak in the AMO at period 9.10.4 years and p value of 1.7% (confidence level, 98.3%). Variations in the flow of the Atlantic meridional overturning circulation may be responsible for some of the 2-15 year variability observed in global land temperatures. Keywords: global warming, decadal variations, Earth surface temperature, climate change, AMO Article in Journal/Newspaper North Atlantic ScholarsArchive@OSU (Oregon State University) |
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English unknown |
description |
Interannual to decadal variations in Earth global temperature estimates have often been identified with El Nino Southern Oscillation (ENSO) events. However, we show that variability on time scales of 2-15 years in mean annual global land surface temperature anomalies T-avg are more closely correlated with variability in sea surface temperatures in the North Atlantic. In particular, the cross-correlation of annually averaged values of T-avg with annual values of the Atlantic Multidecadal Oscillation (AMO) index is much stronger than that of T-avg with ENSO. The pattern of fluctuations in T-avg from 1950 to 2010 reflects true climate variability and is not an artifact of station sampling. A world map of temperature correlations shows that the association with AMO is broadly distributed and unidirectional. The effect of El Nino on temperature is locally stronger, but can be of either sign, leading to less impact on the global average. We identify one strong narrow spectral peak in the AMO at period 9.10.4 years and p value of 1.7% (confidence level, 98.3%). Variations in the flow of the Atlantic meridional overturning circulation may be responsible for some of the 2-15 year variability observed in global land temperatures. Keywords: global warming, decadal variations, Earth surface temperature, climate change, AMO |
author2 |
Statistics |
format |
Article in Journal/Newspaper |
author |
Muller, Richard A. Curry, Judith Groom, Donald Jacobsen, Robert Perlmutter, Saul Rohde, Robert Rosenfeld, Arthur Wickham, Charlotte Wurtele, Jonathan |
spellingShingle |
Muller, Richard A. Curry, Judith Groom, Donald Jacobsen, Robert Perlmutter, Saul Rohde, Robert Rosenfeld, Arthur Wickham, Charlotte Wurtele, Jonathan Decadal variations in the global atmospheric land temperatures |
author_facet |
Muller, Richard A. Curry, Judith Groom, Donald Jacobsen, Robert Perlmutter, Saul Rohde, Robert Rosenfeld, Arthur Wickham, Charlotte Wurtele, Jonathan |
author_sort |
Muller, Richard A. |
title |
Decadal variations in the global atmospheric land temperatures |
title_short |
Decadal variations in the global atmospheric land temperatures |
title_full |
Decadal variations in the global atmospheric land temperatures |
title_fullStr |
Decadal variations in the global atmospheric land temperatures |
title_full_unstemmed |
Decadal variations in the global atmospheric land temperatures |
title_sort |
decadal variations in the global atmospheric land temperatures |
publisher |
American Geophysical Union |
url |
https://ir.library.oregonstate.edu/concern/articles/47429f65c |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://ir.library.oregonstate.edu/concern/articles/47429f65c |
op_rights |
Copyright Not Evaluated |
_version_ |
1810463764134232064 |