热带气象学报2018，Vol.34Issue(3)：419-432,14.DOI:10.16032/j.issn.1004-4965.2018.03.016
基于TRMM卫星探测的南海及周边地区降水、云和潜热特征的比较研究
COMPARISON STUDY ON PRECIPITATION 、CLOUD AND LATENT HEAT CHARACTERISTICS OVER THE SOUTH CHINA SEA AND ITS SURROUNDING AREAS BASED ON TRMM
摘要
Abstract
By using 1998—2013 the Tropical Rainfall Measurement Mission (TRMM)data 3A12, the three-dimensional structure and seasonal variability of the rainfall, cloud, and latent heat over the South China Sea (SCS) and its surrounding areas is investigated. For comparison, the SCS is sub-divided into four parts: the South China Region, Indo-China Peninsula, Malaysia;SCS. The results show that:(1) The rainfall distribution is highly non-uniform and changes from season to season. Overall, the precipitation is much more in summer and autumn while less in spring and winter. But in Malaysia, it is most in winter and lest summer. While in other three areas, it is most in summer. But the precipitations of both the SCS and Indo-China Peninsula reach their minimums in winter while the precipitation of the SCS reaches the minimum in spring. (2) EOF analysis shows that the first mode variance contribution rate is 57.16％, the precipitation in southern areas is higher than that in northern areas. The second mode variance contribution rate is 8.72％, shows that the precipitations of the south and the north change inversely. (3) The equatorial area is mainly distributed with convective precipitation. To the north of 23 °N, stratiform precipitation is dominant. Over the region between 5～23 °N, the precipitation ratio of two types varies with the seasons, which is obvious over land area, especially in South China, the proportion of convective precipitation over land area in summer is greater than 50％, and the proportion of stratiform precipitation in winter is greater than 80％;The proportion of convective precipitation over ocean area is generally greater than 50％, and its seasonal variation is smaller. (4) The horizontal distributions of cloud ice, cloud water, and latent heat are similar to the horizontal distribution of surface precipitation. The vertical distributions of cloud ice and cloud water in the four regions are different. Both cloud ice and cloud water increase first and then decrease with height. And cloud ice reaches the maximum at about 13km;cloud water reaches the maximum at about 2.5 km. In spring and winter, the maximum of cloud ice is distributed mainly in the Malaysian area.In summer and autumn, the maximum of cloud ice is distributed in the SCS. These four seasons all have a larger content of cloud water in the SCS. (5) Latent heat profiles have a similar bimodal structure: the first peak is at about 1～2 km and the second peak is at about 4 km. In spring and winter, the latent heat in Malaysia is much higher. And in summer and autumn, the latent heat in SCS is much higher.关键词
TRMM/降水/云/潜热/南海Key words
TRMM/precipitation/cloud/latent heat/the SCS分类
天文与地球科学引用本文复制引用
叶清文,李江南,罗家林,丁成慧,赵杨洁..基于TRMM卫星探测的南海及周边地区降水、云和潜热特征的比较研究[J].热带气象学报,2018,34(3):419-432,14.基金项目
国家重点研发计划项目(2016YFA0602701) （2016YFA0602701）
国家重点基础研究计划项目(2014CB953903) （2014CB953903）
国家自然科学基金(41275060)共同资助 （41275060）
