Factors Controlling the Interannual Variations of MJO Intensity
The interannual variations of intensity of the Madden-Julian Oscillation（MJO） during boreal winter are investigated by using the observed outgoing longwave radiation（OLR） and the reanalysis data of ECMWF and NCEP.The standard deviation of 20-80-day filtered OLR anomaly is used to measure the MJO int...
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| Veröffentlicht in: | Acta meteorologica Sinica 2016-06, Vol.30 (3), p.328-340 |
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| creator | 邓莉 李天明 刘佳 PENG Melinda |
| description | The interannual variations of intensity of the Madden-Julian Oscillation（MJO） during boreal winter are investigated by using the observed outgoing longwave radiation（OLR） and the reanalysis data of ECMWF and NCEP.The standard deviation of 20-80-day filtered OLR anomaly is used to measure the MJO intensity.The dominant spatial structure of the interannual variability is revealed by an EOF analysis of the MJO intensity field.It is found that the leading mode is associated with eastern Pacific type ENSO,whereas the second mode is related to central Pacific type ENSO.A simple atmospheric model is used to investigate the relative roles of background moisture and wind changes in affecting the overall strength of MJO.The numerical experiments indicate that the background moisture effect is dominant while the background wind change has a minor effect. |
| doi_str_mv | 10.1007/s13351-016-5113-3 |
| format | Article |
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experiments indicate that the background moisture effect is dominant while the background wind change has a minor effect.</abstract><cop>Beijing</cop><pub>The Chinese Meteorological Society</pub><doi>10.1007/s13351-016-5113-3</doi><tpages>13</tpages><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 2095-6037 |
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| language | eng |
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| subjects | Atmospheric Protection/Air Quality Control/Air Pollution Atmospheric Sciences Earth and Environmental Science Earth Sciences ENSO Geophysics and Environmental Physics Meteorology MJO NCEP再分析资料 东太平洋 年际变化 强度场 控制 水分效应 |
| title | Factors Controlling the Interannual Variations of MJO Intensity |
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