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首页> 外文期刊>Acta Meteorologica Sinica >INFLUENCE OF HEAT CONTENT ANOMALY IN THE TROPICAL WESTERN PACIFIC WARM POOL REGION ON ONSET OF SOUTH CHINA SEA SUMMER MONSOON
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INFLUENCE OF HEAT CONTENT ANOMALY IN THE TROPICAL WESTERN PACIFIC WARM POOL REGION ON ONSET OF SOUTH CHINA SEA SUMMER MONSOON

机译：热带西太平洋暖池区热含量异常对南海夏季风爆发的影响。

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摘要

Based on the Scripps/NODC Joint Environmental Data Analysis Center's data of heat content in upper ocean (1955 ― 1998) and NCEP/NCAR reanalysis data, the relationship between the heat content anomalies in the warm pool area of the western Pacific (WP) and onset of South China Sea summer monsoon (SCSM) is examined. The results show that the warm pool area (WP) is the place where heat content in the tropical upper layer changes with maximum range and which is most obviously influential to South China Sea summer monsoon. Onset of SCSM is very closely related to the heat content anomaly during the previous period (previous winter and spring) of the WP so that the heat content of March to April in the WP area is a very good predictor for onset of SCSM. When the heat content of the WP area is positive, convection center will be located in the South China Sea-western Pacific with strong convection, a positive anomaly of monsoon circulation and Walker circulation will take place and the subtropical high will be weaker and farther east. Positive anomalous monsoon circulation and Walker circulation will be favorable for westerly and southwesterly flows ― SCSM breaks off earlier than normal. Otherwise, SCSM comes later than usual. Large-scale anomalous change of monsoon circulation and Walker circulation seems one of the important mechanisms to influence SCSM.
机译：根据斯克里普斯/ NODC联合环境数据分析中心的上层海洋热量含量数据（1955 ― 1998）和NCEP / NCAR再分析数据，西太平洋暖池区（WP）的热量含量异常与研究了南海夏季风（SCSM）的发作。结果表明，暖池区是热带上层热量变化最大的区域，对南海夏季风影响最大。 SCSM的爆发与WP的前一个时期（以前的冬季和春季）的热含量异常密切相关，因此WP地区3月至4月的热含量是SCSM爆发的很好的预测指标。当WP区的热量为正值时，对流中心将位于强对流的南海西北太平洋，季风环流和Walker环流将出现正异常，副热带高压将减弱并向东移动。 。季风环流和沃克环流的正异常将有利于西风和西南风-SCSM的爆发比正常情况更早。否则，SCSM的发布时间会比平时晚。季风环流和沃克环流的大范围异常变化似乎是影响南海夏季风的重要机制之一。

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