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首页> 外文期刊>Acta Meteorologica Sinica >NUMERICAL EXPERIMENTS FOR THE INFLUENCE OF ANOMALOUS SEA SURFACE TEMPERATURE ON THE SOUTH CHINA SEA SUMMER MONSOON
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NUMERICAL EXPERIMENTS FOR THE INFLUENCE OF ANOMALOUS SEA SURFACE TEMPERATURE ON THE SOUTH CHINA SEA SUMMER MONSOON

机译：海面异常温度对南海夏季风影响的数值试验

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摘要

Several sensitivity experiments are done by using the T42L9 global spectral model developed by IAP for investigating the influence of sea surface temperature anomaly (SSTA) in different regions on the South China Sea Summer Monsoon (SCSM). It shows that when SSTA presents a La Nina pattern, the onset date of SCSM will be earlier and the convection in the South China Sea region will be consistently stronger, and vice versa. Specially, SSTA in the central and eastern Pacific plays a main role in the variation of the onset and the strength of SCSM. When SSTA of this area is lower, the onset of SCSM comes earlier, the strength of SCSM becomes stronger, otherwise, the conclusion is contrary. The influence of SSTA in the tropical West Pacific on the onset date of SCSM is not clear, but it strongly affects the strength of the monsoon. The warmer SST in this region will bring about a stronger SCSM, and vice versa. The relationship between SSTA in the tropical western Indian Ocean and SCSM has been investigated. It is found that the SSTA in this region can influence the onset of SCSM, and plays a role similar to the one in the eastern Pacific. The above results also reflect that the activity of SCSM has a close relationship with the El-Nino or La Nina events. The onset and the strength change of the SCSM are obviously influenced by the heating status anomaly on the tropic Pacific through the Walker circulation.
机译：通过使用IAP开发的T42L9全球光谱模型，进行了几个敏感性实验，以调查不同区域的海表温度异常（SSTA）对南海夏季风（SCSM）的影响。它表明，当SSTA呈现La Nina模式时，SCSM的开始日期将更早，并且南中国海地区的对流将持续增强，反之亦然。特别是，太平洋中部和东部的SSTA在SCSM发病和强度的变化中起主要作用。当该区域的SSTA较低时，SCSM的发生较早，SCSM的强度会增强，否则，结论是相反的。 SSTA在热带西太平洋地区对SCSM发生日期的影响尚不清楚，但它强烈影响季风的强度。该地区SST变暖将带来更强的SCSM，反之亦然。已经研究了热带印度洋西部的SSTA与SCSM之间的关系。发现该地区的SSTA可以影响SCSM的发生，并且起着与东太平洋地区类似的作用。上述结果还反映出，SCSM的活动与El-Nino或La Nina事件有着密切的关系。通过沃克环流，热带太平洋上的加热状态异常明显影响了SCSM的开始和强度变化。

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