南海季风爆发早晚年大气环流的输送异常Ⅱ：能量输送异常
Anomalies of the General Circulation Transport during Onset of South China Sea Summer Monsoon in the Early or Later YearsⅡ：E-P Flux Anomaly
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摘要: 利用NCEP再分析资料,计算和分析了南海季风爆发偏早年和偏晚年能量输送差异。结果表明:1) E-P通量输送区域性明显,高层200hPa和低层850hPa,高原西侧、中国中东部和中太平洋辐散偏强,高原主体、西太平洋和东太平洋辐合偏强;中层500hPa,基本都是辐散偏强或是辐合偏弱。2) E-P通量垂直结构差异明显,早年高原南侧高层辐合异常偏弱,中纬度中高层和高纬度低层辐散异常偏弱;早年中低纬度中高层西风异常减速,高纬度高层西风异常加速。3)高层温度场在西伯利亚、中国地区、北太平洋地区是异常偏暖,在中国东南部和俄罗斯中东部异常偏冷;中层和低层的分布相似,与高层刚好相反。高度场差异分布一致,早年在西伯利亚和北太平洋为高度场异常偏高,而在中国中南部、俄罗斯中东部和赤道中太平洋为高度场异常偏低;海温异常偏暖和偏冷的区域与850hPa温度场的分布非常一致。Abstract: The paper calculated and analyses the E-P flux anomalies of South China Sea Summer Monsoon in the early and later years used the NCEP daily reanalysis during 1949 to 2009. The results showed:1) The E-P flux has a significant regional characteristics. There were stronger divergences in the west Tibetan Plateau, eastern China and middle Pacific, and strong convergences in the Tibetan Plateau, Western Pacific and Eastern Pacific in 200 hPa and 850 hPa. There were stronger divergences in 500 hPa. 2) The differences of vertical structure of E-P flux were significant, weaker divergences in 200 hPa of south Tibetan Plateau, and weaker convergences in 200 hPa~500 hPa in Mid-latitudes and 850 hPa in high latitudes. 3) There were also significant differences in the Temperature, height and sea surface temperature.
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