| Spatio-temporal Variability Sea Level Pressure （SLP） the Mid-to-Low Reaches of Northern Hemipheric and Precipitation over of the Yangtze River |
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| 引用本文： | 韩雪,魏凤英,董文杰.Spatio-temporal Variability Sea Level Pressure （SLP） the Mid-to-Low Reaches of Northern Hemipheric and Precipitation over of the Yangtze River[J].大气科学进展,2008,25(3):458-466. |
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| 作者姓名： | 韩雪 魏凤英 董文杰 |
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| 作者单位： | HAN Xue（Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;State Key Laboratory for Earth Surface Processes and Resource Ecology, Beijing Normal University, 100875） ;
WEI Fengying（State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081） ;
Yves M.TOURRE（MEDIAS-France, Toulouse, France;LDEO of Columbia University, New York, USA） ;
DONG Wenjie （State Key Laboratory for Earth Surface Processes and Resource Ecology, Beijing Normal University, 100875） ; |
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| 摘 要： | The spatio-temporal variability of Northern Hemisphere Sea Level Pressure （SLP） and precipitation over the mid-to-low reaches of the Yangtze River （PMLY） is analyzed jointly using the multi-taper/singular value decomposition method （MTM-SVD）. Statistically significant narrow frequency bands are obtained from the local fractional variance （LFV） spectrum. Significant interdecadal （i.e., 16-to-18-year periods） and interannual （i.e., 3-to-6-year periods） signals are identified. Moreover, a significant quasi-biennial signal is identified but only for PMLY data. The spatial joint evolution of patterns obtained for peaks in the LFV spectrum sheds light on relationships between SLP and PMLY： the Arctic Oscillation （AO） modulates the variability of the PMLY while the interannual variability of PMLY is in phase with the Northern Atlantic Oscillation （NAO） and the Northern Pacific Oscillation （NPO）.
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| 关 键 词： | 耦合空间-时间特征 北半球 海洋气候 长江 |
| 收稿时间： | 6 March 2007 |
Spatio-temporal variability of Northern Hemipheric Sea Level Pressure (SLP) and precipitation over the mid-to-low reaches of the Yangtze River |
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| Xue Han,Fengying Wei,Yves M. Tourre,Wenjie Dong.Spatio-temporal variability of Northern Hemipheric Sea Level Pressure (SLP) and precipitation over the mid-to-low reaches of the Yangtze River[J].Advances in Atmospheric Sciences,2008,25(3):458-466. |
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| Authors: | Xue Han Fengying Wei Yves M Tourre Wenjie Dong |
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| Institution: | [1]Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 [2]State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081 [3]State Key Laboratory for Earth Surface Processes and Resource Ecology, Beijing Normal University, 100875 [4]MEDIAS-France, Toulouse, France [5]LDEO of Columbia University, New York, USA |
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| Abstract: | The spatio-temporal variability of Northern Hemisphere Sea Level Pressure (SLP) and precipitation over the mid-to-low reaches of the Yangtze River (PMLY) is analyzed jointly using the multi-taper /singular value decomposition method (MTM-SVD). Statistically significant narrow frequency bands are obtained from the local fractional variance (LFV) spectrum. Significant interdecadal (i.e., 16-to-18-year periods) and interannual (i.e., 3-to-6-year periods) signals are identified. Moreover, a significant quasi-biennial signal is identified but only for PMLY data. The spatial joint evolution of patterns obtained for peaks in the LFV spectrum sheds light on relationships between SLP and PMLY: the Arctic Oscillation (AO) modulates the variability of the PMLY while the interannual variability of PMLY is in phase with the Northern Atlantic Oscillation (NAO) and the Northern Pacific Oscillation (NPO). |
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| Keywords: | MTM-SVD coupled spatio-temporal characteristics |
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