Climate impacts of the Atlantic Multidecadal Oscillation simulated in the CMIP5 models: A re-evaluation based on a revised index
The Atlantic Multidecadal Oscillation (AMO) has pronounced influences on weather and climate across the globe. This study provides a direct comparison of the observed AMO-related surface temperature and precipitation anomalies to those simulated in the Coupled Model Intercomparison Project Phase 5 (...
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ftcdlib:oai:escholarship.org/ark:/13030/qt4x24m9qr 2023-05-15T17:29:30+02:00 Climate impacts of the Atlantic Multidecadal Oscillation simulated in the CMIP5 models: A re-evaluation based on a revised index Lyu, K Yu, JY 3867 - 3876 2017-04-28 application/pdf https://escholarship.org/uc/item/4x24m9qr unknown eScholarship, University of California qt4x24m9qr https://escholarship.org/uc/item/4x24m9qr CC-BY CC-BY Geophysical Research Letters, vol 44, iss 8 Meteorology & Atmospheric Sciences article 2017 ftcdlib 2021-10-25T17:15:37Z The Atlantic Multidecadal Oscillation (AMO) has pronounced influences on weather and climate across the globe. This study provides a direct comparison of the observed AMO-related surface temperature and precipitation anomalies to those simulated in the Coupled Model Intercomparison Project Phase 5 (CMIP5) models. It is found that the model-simulated AMO-related features are obscured by the global signal in some key regions if the North Atlantic sea surface temperature (SST) itself is used to represent the AMO as in previous studies. After the global mean SST is removed from the North Atlantic SST, the CMIP5 models show substantially better agreement with the observations in terms of the AMO-related worldwide impacts, such as the Pacific SST and the rainfall over the United States and India. These results suggest the removal of the global signal or signals originating in other ocean basins is a necessary procedure to uncover the AMO features in climate model simulations. Article in Journal/Newspaper North Atlantic University of California: eScholarship Pacific |
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Open Polar |
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University of California: eScholarship |
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ftcdlib |
language |
unknown |
topic |
Meteorology & Atmospheric Sciences |
spellingShingle |
Meteorology & Atmospheric Sciences Lyu, K Yu, JY Climate impacts of the Atlantic Multidecadal Oscillation simulated in the CMIP5 models: A re-evaluation based on a revised index |
topic_facet |
Meteorology & Atmospheric Sciences |
description |
The Atlantic Multidecadal Oscillation (AMO) has pronounced influences on weather and climate across the globe. This study provides a direct comparison of the observed AMO-related surface temperature and precipitation anomalies to those simulated in the Coupled Model Intercomparison Project Phase 5 (CMIP5) models. It is found that the model-simulated AMO-related features are obscured by the global signal in some key regions if the North Atlantic sea surface temperature (SST) itself is used to represent the AMO as in previous studies. After the global mean SST is removed from the North Atlantic SST, the CMIP5 models show substantially better agreement with the observations in terms of the AMO-related worldwide impacts, such as the Pacific SST and the rainfall over the United States and India. These results suggest the removal of the global signal or signals originating in other ocean basins is a necessary procedure to uncover the AMO features in climate model simulations. |
format |
Article in Journal/Newspaper |
author |
Lyu, K Yu, JY |
author_facet |
Lyu, K Yu, JY |
author_sort |
Lyu, K |
title |
Climate impacts of the Atlantic Multidecadal Oscillation simulated in the CMIP5 models: A re-evaluation based on a revised index |
title_short |
Climate impacts of the Atlantic Multidecadal Oscillation simulated in the CMIP5 models: A re-evaluation based on a revised index |
title_full |
Climate impacts of the Atlantic Multidecadal Oscillation simulated in the CMIP5 models: A re-evaluation based on a revised index |
title_fullStr |
Climate impacts of the Atlantic Multidecadal Oscillation simulated in the CMIP5 models: A re-evaluation based on a revised index |
title_full_unstemmed |
Climate impacts of the Atlantic Multidecadal Oscillation simulated in the CMIP5 models: A re-evaluation based on a revised index |
title_sort |
climate impacts of the atlantic multidecadal oscillation simulated in the cmip5 models: a re-evaluation based on a revised index |
publisher |
eScholarship, University of California |
publishDate |
2017 |
url |
https://escholarship.org/uc/item/4x24m9qr |
op_coverage |
3867 - 3876 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Geophysical Research Letters, vol 44, iss 8 |
op_relation |
qt4x24m9qr https://escholarship.org/uc/item/4x24m9qr |
op_rights |
CC-BY |
op_rightsnorm |
CC-BY |
_version_ |
1766123639282860032 |