Global warming mode of atmospheric circulation
Variations of global-mean atmospheric circulation are studied using the National Center of Environment Prediction/National Center of Atmosphere (NCEP/NCAR) reanalysis data set from January 1948 to February 2001 and CCM3.6 (Community Climate Model Version 3.6) simulations for the period 1990-1999. Em...
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ftpekinguniv:oai:localhost:20.500.11897/147830 2023-05-15T15:09:20+02:00 Global warming mode of atmospheric circulation Zhu, Jinhong Wang, Shaowu Zhang, Xiangdong Zhu, JH (reprint author), Peking Univ, Int Arctic Res Ctr, Dept Atmospher Sci, Sch Phys, Beijing, Peoples R China. Peking Univ, Int Arctic Res Ctr, Dept Atmospher Sci, Sch Phys, Beijing, Peoples R China. Univ Alaska Fairbanks, Int Arctic Res Ctr, Fairbanks, AK 99775 USA. 2002 https://hdl.handle.net/20.500.11897/147830 https://doi.org/10.1006/asle.2002.0052 en eng atmospheric science letters ATMOSPHERIC SCIENCE LETTERS.2002,3,(1),1-13. 766079 1530-261X http://hdl.handle.net/20.500.11897/147830 doi:10.1006/asle.2002.0052 WOS:000208100900001 SCI global zonal-mean atmospheric circulation global warming CCM3.6 simulations EXTRATROPICAL CIRCULATION ARCTIC OSCILLATION ANNULAR MODES VARIABILITY PACIFIC Journal 2002 ftpekinguniv https://doi.org/20.500.11897/147830 https://doi.org/10.1006/asle.2002.0052 2021-08-01T07:58:04Z Variations of global-mean atmospheric circulation are studied using the National Center of Environment Prediction/National Center of Atmosphere (NCEP/NCAR) reanalysis data set from January 1948 to February 2001 and CCM3.6 (Community Climate Model Version 3.6) simulations for the period 1990-1999. Empirical orthogonal function (EOF) analysis indicates that variations of zonal-mean geopotential height in the tropics are usually opposite to those over the subpolar zone in both hemispheres. The first mode of EOF analysis shows that height is higher than normal in the tropics when it is lower over the subpolar zone in both hemispheres with much stronger westerlies over mid latitudes in both hemispheres, and vice versa. This mode explains about 50% variance and is predominant in the troposphere. The time series of EOF1 has a sharp transition near about 1977 and the polarity changes from negative to positive. This mode is closely related to the variations of global mean surface air temperature. The detrended correlation coefficient between EOF1 time series and the surface air temperature is 0.74 in the boreal winter. Furthermore, the lowest correlation coefficient among the other three seasons, annual mean, seasonal mean and monthly mean is higher than 0.42 which indicate the fairly good relationship between this mode and the surface air temperature. The result has been verified using CCM3.6 simulations. (C) Royal Meteorological Society Geochemistry & Geophysics Meteorology & Atmospheric Sciences SCI(E) 1 ARTICLE 1 1-13 3 Journal/Newspaper Arctic Global warming Peking University Institutional Repository (PKU IR) Arctic Pacific Atmospheric Science Letters 3 1 1 13 |
institution |
Open Polar |
collection |
Peking University Institutional Repository (PKU IR) |
op_collection_id |
ftpekinguniv |
language |
English |
topic |
global zonal-mean atmospheric circulation global warming CCM3.6 simulations EXTRATROPICAL CIRCULATION ARCTIC OSCILLATION ANNULAR MODES VARIABILITY PACIFIC |
spellingShingle |
global zonal-mean atmospheric circulation global warming CCM3.6 simulations EXTRATROPICAL CIRCULATION ARCTIC OSCILLATION ANNULAR MODES VARIABILITY PACIFIC Zhu, Jinhong Wang, Shaowu Zhang, Xiangdong Global warming mode of atmospheric circulation |
topic_facet |
global zonal-mean atmospheric circulation global warming CCM3.6 simulations EXTRATROPICAL CIRCULATION ARCTIC OSCILLATION ANNULAR MODES VARIABILITY PACIFIC |
description |
Variations of global-mean atmospheric circulation are studied using the National Center of Environment Prediction/National Center of Atmosphere (NCEP/NCAR) reanalysis data set from January 1948 to February 2001 and CCM3.6 (Community Climate Model Version 3.6) simulations for the period 1990-1999. Empirical orthogonal function (EOF) analysis indicates that variations of zonal-mean geopotential height in the tropics are usually opposite to those over the subpolar zone in both hemispheres. The first mode of EOF analysis shows that height is higher than normal in the tropics when it is lower over the subpolar zone in both hemispheres with much stronger westerlies over mid latitudes in both hemispheres, and vice versa. This mode explains about 50% variance and is predominant in the troposphere. The time series of EOF1 has a sharp transition near about 1977 and the polarity changes from negative to positive. This mode is closely related to the variations of global mean surface air temperature. The detrended correlation coefficient between EOF1 time series and the surface air temperature is 0.74 in the boreal winter. Furthermore, the lowest correlation coefficient among the other three seasons, annual mean, seasonal mean and monthly mean is higher than 0.42 which indicate the fairly good relationship between this mode and the surface air temperature. The result has been verified using CCM3.6 simulations. (C) Royal Meteorological Society Geochemistry & Geophysics Meteorology & Atmospheric Sciences SCI(E) 1 ARTICLE 1 1-13 3 |
author2 |
Zhu, JH (reprint author), Peking Univ, Int Arctic Res Ctr, Dept Atmospher Sci, Sch Phys, Beijing, Peoples R China. Peking Univ, Int Arctic Res Ctr, Dept Atmospher Sci, Sch Phys, Beijing, Peoples R China. Univ Alaska Fairbanks, Int Arctic Res Ctr, Fairbanks, AK 99775 USA. |
format |
Journal/Newspaper |
author |
Zhu, Jinhong Wang, Shaowu Zhang, Xiangdong |
author_facet |
Zhu, Jinhong Wang, Shaowu Zhang, Xiangdong |
author_sort |
Zhu, Jinhong |
title |
Global warming mode of atmospheric circulation |
title_short |
Global warming mode of atmospheric circulation |
title_full |
Global warming mode of atmospheric circulation |
title_fullStr |
Global warming mode of atmospheric circulation |
title_full_unstemmed |
Global warming mode of atmospheric circulation |
title_sort |
global warming mode of atmospheric circulation |
publisher |
atmospheric science letters |
publishDate |
2002 |
url |
https://hdl.handle.net/20.500.11897/147830 https://doi.org/10.1006/asle.2002.0052 |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic Global warming |
genre_facet |
Arctic Global warming |
op_source |
SCI |
op_relation |
ATMOSPHERIC SCIENCE LETTERS.2002,3,(1),1-13. 766079 1530-261X http://hdl.handle.net/20.500.11897/147830 doi:10.1006/asle.2002.0052 WOS:000208100900001 |
op_doi |
https://doi.org/20.500.11897/147830 https://doi.org/10.1006/asle.2002.0052 |
container_title |
Atmospheric Science Letters |
container_volume |
3 |
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1 |
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1 |
op_container_end_page |
13 |
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1766340544746749952 |