On the Possible Link between Tropical Convection and the Northern Hemisphere Arctic Surface Air Temperature Change between 1958 and 2001
This study presents mechanisms for the polar amplification of surface air temperature that occurred in the Northern Hemisphere (NH) between the periods of 1958-77 (P1) and 1982-2001 (P2). Using European Centre for Medium-Range Weather Forecasts Re-Analysis (ERA-40) reanalysis data, it is found that...
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Language: | English |
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Online Access: | http://ir.qdio.ac.cn/handle/337002/11598 https://doi.org/10.1175/2011JCLI4003.1 |
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ftchinacasciocas:oai:ir.qdio.ac.cn:337002/11597 2023-05-15T14:25:28+02:00 On the Possible Link between Tropical Convection and the Northern Hemisphere Arctic Surface Air Temperature Change between 1958 and 2001 Lee, Sukyoung Gong, Tingting Johnson, Nathaniel Feldstein, Steven B. Pollard, David 2011-08-01 http://ir.qdio.ac.cn/handle/337002/11598 https://doi.org/10.1175/2011JCLI4003.1 英语 eng JOURNAL OF CLIMATE Lee, Sukyoung; Gong, Tingting; Johnson, Nathaniel; Feldstein, Steven B.; Pollard, David.On the Possible Link between Tropical Convection and the Northern Hemisphere Arctic Surface Air Temperature Change between 1958 and 2001,JOURNAL OF CLIMATE,2011,24(16):4350-4367 http://ir.qdio.ac.cn/handle/337002/11598 doi:10.1175/2011JCLI4003.1 Meteorology & Atmospheric Sciences Article 期刊论文 2011 ftchinacasciocas https://doi.org/10.1175/2011JCLI4003.1 2022-06-27T05:34:10Z This study presents mechanisms for the polar amplification of surface air temperature that occurred in the Northern Hemisphere (NH) between the periods of 1958-77 (P1) and 1982-2001 (P2). Using European Centre for Medium-Range Weather Forecasts Re-Analysis (ERA-40) reanalysis data, it is found that over the ice-covered Arctic Ocean, the winter surface warming arises from dynamic warming (stationary eddy heat flux and adiabatic warming). Over the ice-free Arctic Ocean between the Greenland and the Barents Seas, downward infrared radiative (IR) flux is found to dominate the warming. This study presents mechanisms for the polar amplification of surface air temperature that occurred in the Northern Hemisphere (NH) between the periods of 1958-77 (P1) and 1982-2001 (P2). Using European Centre for Medium-Range Weather Forecasts Re-Analysis (ERA-40) reanalysis data, it is found that over the ice-covered Arctic Ocean, the winter surface warming arises from dynamic warming (stationary eddy heat flux and adiabatic warming). Over the ice-free Arctic Ocean between the Greenland and the Barents Seas, downward infrared radiative (IR) flux is found to dominate the warming. To investigate whether the difference in the flow between P1 and P2 is due to changes in the frequency of occurrence of a small number of teleconnection patterns, a coupled self-organizing map (SOM) analysis of the 250-hPa streamfunction and tropical convective precipitation is performed. The latter field was specified to lead the former by 5 days. The results of the analysis showed that the P2 - P1 trend arises from a decrease in the frequency of negative phase PNA-like and circumglobal streamfunction patterns and a corresponding increase in the frequency of positive PNA-like and circumglobal streamfunction patterns. The occurrence of the two strong 1982-83 and 1997-98 El Nino events also contributes toward this trend. The corresponding trend in the convective precipitation is from below average to above average values in the tropical Indo-western Pacific ... Article in Journal/Newspaper Arctic Arctic Arctic Ocean Greenland Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR Arctic Arctic Ocean Greenland Pacific Journal of Climate 24 16 4350 4367 |
institution |
Open Polar |
collection |
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR |
op_collection_id |
ftchinacasciocas |
language |
English |
topic |
Meteorology & Atmospheric Sciences |
spellingShingle |
Meteorology & Atmospheric Sciences Lee, Sukyoung Gong, Tingting Johnson, Nathaniel Feldstein, Steven B. Pollard, David On the Possible Link between Tropical Convection and the Northern Hemisphere Arctic Surface Air Temperature Change between 1958 and 2001 |
topic_facet |
Meteorology & Atmospheric Sciences |
description |
This study presents mechanisms for the polar amplification of surface air temperature that occurred in the Northern Hemisphere (NH) between the periods of 1958-77 (P1) and 1982-2001 (P2). Using European Centre for Medium-Range Weather Forecasts Re-Analysis (ERA-40) reanalysis data, it is found that over the ice-covered Arctic Ocean, the winter surface warming arises from dynamic warming (stationary eddy heat flux and adiabatic warming). Over the ice-free Arctic Ocean between the Greenland and the Barents Seas, downward infrared radiative (IR) flux is found to dominate the warming. This study presents mechanisms for the polar amplification of surface air temperature that occurred in the Northern Hemisphere (NH) between the periods of 1958-77 (P1) and 1982-2001 (P2). Using European Centre for Medium-Range Weather Forecasts Re-Analysis (ERA-40) reanalysis data, it is found that over the ice-covered Arctic Ocean, the winter surface warming arises from dynamic warming (stationary eddy heat flux and adiabatic warming). Over the ice-free Arctic Ocean between the Greenland and the Barents Seas, downward infrared radiative (IR) flux is found to dominate the warming. To investigate whether the difference in the flow between P1 and P2 is due to changes in the frequency of occurrence of a small number of teleconnection patterns, a coupled self-organizing map (SOM) analysis of the 250-hPa streamfunction and tropical convective precipitation is performed. The latter field was specified to lead the former by 5 days. The results of the analysis showed that the P2 - P1 trend arises from a decrease in the frequency of negative phase PNA-like and circumglobal streamfunction patterns and a corresponding increase in the frequency of positive PNA-like and circumglobal streamfunction patterns. The occurrence of the two strong 1982-83 and 1997-98 El Nino events also contributes toward this trend. The corresponding trend in the convective precipitation is from below average to above average values in the tropical Indo-western Pacific ... |
format |
Article in Journal/Newspaper |
author |
Lee, Sukyoung Gong, Tingting Johnson, Nathaniel Feldstein, Steven B. Pollard, David |
author_facet |
Lee, Sukyoung Gong, Tingting Johnson, Nathaniel Feldstein, Steven B. Pollard, David |
author_sort |
Lee, Sukyoung |
title |
On the Possible Link between Tropical Convection and the Northern Hemisphere Arctic Surface Air Temperature Change between 1958 and 2001 |
title_short |
On the Possible Link between Tropical Convection and the Northern Hemisphere Arctic Surface Air Temperature Change between 1958 and 2001 |
title_full |
On the Possible Link between Tropical Convection and the Northern Hemisphere Arctic Surface Air Temperature Change between 1958 and 2001 |
title_fullStr |
On the Possible Link between Tropical Convection and the Northern Hemisphere Arctic Surface Air Temperature Change between 1958 and 2001 |
title_full_unstemmed |
On the Possible Link between Tropical Convection and the Northern Hemisphere Arctic Surface Air Temperature Change between 1958 and 2001 |
title_sort |
on the possible link between tropical convection and the northern hemisphere arctic surface air temperature change between 1958 and 2001 |
publishDate |
2011 |
url |
http://ir.qdio.ac.cn/handle/337002/11598 https://doi.org/10.1175/2011JCLI4003.1 |
geographic |
Arctic Arctic Ocean Greenland Pacific |
geographic_facet |
Arctic Arctic Ocean Greenland Pacific |
genre |
Arctic Arctic Arctic Ocean Greenland |
genre_facet |
Arctic Arctic Arctic Ocean Greenland |
op_relation |
JOURNAL OF CLIMATE Lee, Sukyoung; Gong, Tingting; Johnson, Nathaniel; Feldstein, Steven B.; Pollard, David.On the Possible Link between Tropical Convection and the Northern Hemisphere Arctic Surface Air Temperature Change between 1958 and 2001,JOURNAL OF CLIMATE,2011,24(16):4350-4367 http://ir.qdio.ac.cn/handle/337002/11598 doi:10.1175/2011JCLI4003.1 |
op_doi |
https://doi.org/10.1175/2011JCLI4003.1 |
container_title |
Journal of Climate |
container_volume |
24 |
container_issue |
16 |
container_start_page |
4350 |
op_container_end_page |
4367 |
_version_ |
1766297853751197696 |