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首页> 外文期刊>Journal of tropical meteorology >INTERANNUAL VARIATIONS OF ATMOSPHERIC HEAT SOURCES AND MOISTURE SINKS OVER THE EQUATORIAL PACIFIC AND THEIR RELATIONS TO THE SST ANOMALIES
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INTERANNUAL VARIATIONS OF ATMOSPHERIC HEAT SOURCES AND MOISTURE SINKS OVER THE EQUATORIAL PACIFIC AND THEIR RELATIONS TO THE SST ANOMALIES

机译：赤道太平洋上大气热源和水汽的年际变化及其与海温异常的关系

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摘要

The interannual variations of atmospheric heat sources and moisture sinks over the Equatorial Pacific and their relations with the SST anomalies are studied using ECMWF reanalysis data from 1979 to 1993. It is found by singular value decomposition (SVD) analysis that the region in the tropical Pacific with high positive correlation between the vertically integrated heat source < Q1 > anomaly and the SST anomaly, and between the vertically integrated moisture sink < Q2 > anomaly and the SST anomaly, is mainly located in a long and narrow belt to the east of 170 °E between 5 °S and 5 °N. The analysis of the vertical structure of atmospheric heat sources and moisture sinks shows that the interannual variations of Q1,Q2 and SST in the equatorial central and eastern Pacific are strongly and positively correlated in the whole troposphere except the bottom (962.5 hPa) and the top (85 hPa) layers. However, in the western Pacific, the interannual variations of Q1 below 850 hPa is negatively related to the SST. The correlation coefficient at the level 962.5 hPa reaches even -0.59. In other layers the positive correlation between the interannual variations of Q1,Q2 and the SST are weak in the western Pacific.
机译：利用1979-1993年的ECMWF再分析资料，研究了赤道​​太平洋大气热源和湿气汇的年际变化及其与海温异常的关系。通过奇异值分解（SVD）分析发现热带太平洋地区垂直积分热源异常与SST异常之间，垂直积分湿陷异常与SST异常之间具有高度正相关，主要位于170°以东的长窄带中E在5°S和5°N之间。对大气热源和湿气汇的垂直结构的分析表明，除底部（962.5 hPa）和顶部以外，整个对流层中赤道中太平洋和东太平洋Q1，Q2和SST的年际变化均呈强正相关。 （85 hPa）层。然而，在西太平洋，低于850 hPa的Q1的年际变化与SST呈负相关。在962.5 hPa的相关系数甚至达到-0.59。在其他层中，西太平洋Q1，Q2和SST年际变化之间的正相关性很弱。

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