Influence of local and remote SST on North Atlantic tropical cyclone potential intensity
We examine the role of local and remote sea surface temperature (SST) on the tropical cyclone potential intensity in the North Atlantic using a suite of model simulations, while separating the impact of anthropogenic (external) forcing and the internal influence of Atlantic Multidecadal Variability....
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ftcolumbiauniv:oai:academiccommons.columbia.edu:10.7916/D8988677 2023-05-15T17:28:42+02:00 Influence of local and remote SST on North Atlantic tropical cyclone potential intensity Camargo, Suzana J. Ting, Mingfang Kushnir, Yochanan 2013 https://doi.org/10.7916/D8988677 English eng https://doi.org/10.7916/D8988677 Hurricanes Ocean-atmosphere interaction Climatic changes Articles 2013 ftcolumbiauniv https://doi.org/10.7916/D8988677 2019-04-04T08:12:56Z We examine the role of local and remote sea surface temperature (SST) on the tropical cyclone potential intensity in the North Atlantic using a suite of model simulations, while separating the impact of anthropogenic (external) forcing and the internal influence of Atlantic Multidecadal Variability. To enable the separation by SST region of influence we use an ensemble of global atmospheric climate model simulations forced with historical, 1856–2006 full global SSTs, and compare the results to two other simulations with historical SSTs confined to the tropical Atlantic and to the tropical Indian Ocean and Pacific. The effects of anthropogenic plus other external forcing and that of internal variability are separated by using a linear, “signal-to-noise” maximizing EOF analysis and by projecting the three model ensemble outputs onto the respective external forcing and internal variability time series. Consistent with previous results indicating a tampering influence of global tropical warming on the Atlantic hurricane potential intensity, our results show that non-local SST tends to reduce potential intensity associated with locally forced warming through changing the upper level atmospheric temperatures. Our results further indicate that the late twentieth Century increase in North Atlantic potential intensity, may not have been dominated by anthropogenic influence but rather by internal variability. Article in Journal/Newspaper North Atlantic Columbia University: Academic Commons Pacific Indian |
institution |
Open Polar |
collection |
Columbia University: Academic Commons |
op_collection_id |
ftcolumbiauniv |
language |
English |
topic |
Hurricanes Ocean-atmosphere interaction Climatic changes |
spellingShingle |
Hurricanes Ocean-atmosphere interaction Climatic changes Camargo, Suzana J. Ting, Mingfang Kushnir, Yochanan Influence of local and remote SST on North Atlantic tropical cyclone potential intensity |
topic_facet |
Hurricanes Ocean-atmosphere interaction Climatic changes |
description |
We examine the role of local and remote sea surface temperature (SST) on the tropical cyclone potential intensity in the North Atlantic using a suite of model simulations, while separating the impact of anthropogenic (external) forcing and the internal influence of Atlantic Multidecadal Variability. To enable the separation by SST region of influence we use an ensemble of global atmospheric climate model simulations forced with historical, 1856–2006 full global SSTs, and compare the results to two other simulations with historical SSTs confined to the tropical Atlantic and to the tropical Indian Ocean and Pacific. The effects of anthropogenic plus other external forcing and that of internal variability are separated by using a linear, “signal-to-noise” maximizing EOF analysis and by projecting the three model ensemble outputs onto the respective external forcing and internal variability time series. Consistent with previous results indicating a tampering influence of global tropical warming on the Atlantic hurricane potential intensity, our results show that non-local SST tends to reduce potential intensity associated with locally forced warming through changing the upper level atmospheric temperatures. Our results further indicate that the late twentieth Century increase in North Atlantic potential intensity, may not have been dominated by anthropogenic influence but rather by internal variability. |
format |
Article in Journal/Newspaper |
author |
Camargo, Suzana J. Ting, Mingfang Kushnir, Yochanan |
author_facet |
Camargo, Suzana J. Ting, Mingfang Kushnir, Yochanan |
author_sort |
Camargo, Suzana J. |
title |
Influence of local and remote SST on North Atlantic tropical cyclone potential intensity |
title_short |
Influence of local and remote SST on North Atlantic tropical cyclone potential intensity |
title_full |
Influence of local and remote SST on North Atlantic tropical cyclone potential intensity |
title_fullStr |
Influence of local and remote SST on North Atlantic tropical cyclone potential intensity |
title_full_unstemmed |
Influence of local and remote SST on North Atlantic tropical cyclone potential intensity |
title_sort |
influence of local and remote sst on north atlantic tropical cyclone potential intensity |
publishDate |
2013 |
url |
https://doi.org/10.7916/D8988677 |
geographic |
Pacific Indian |
geographic_facet |
Pacific Indian |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://doi.org/10.7916/D8988677 |
op_doi |
https://doi.org/10.7916/D8988677 |
_version_ |
1766121558355476480 |