文献类型：期刊文献

中文题名：Characteristics of Atmospheric Heat Sources in the Tibetan Plateau-Tropical Indian Ocean Region

英文题名：Characteristics of Atmospheric Heat Sources in the Tibetan Plateau-Tropical Indian Ocean Region

作者：Luo Xiao-qing[1,2];Xu Jian-jun[1,2];Liu Chun-lei[1,2];Zhang Yu[1,2];Li Kai[3];Wu Lang-qi[2]

机构：[1]Guangdong Ocean Univ, South China Sea Inst Marine Meteorol, Zhanjiang 524088, Guangdong, Peoples R China;[2]Guangdong Ocean Univ, Coll Ocean & Meteorol, Zhanjiang 524088, Guangdong, Peoples R China;[3]Guangdong Ocean Univ, Maritime Coll, Zhanjiang 524088, Guangdong, Peoples R China

年份：2021

卷号：27

期号：1

起止页码：70

中文期刊名：Journal of Tropical Meteorology

外文期刊名：JOURNAL OF TROPICAL METEOROLOGY

收录：SCI-EXPANDED(收录号：WOS:000636696500007)、、Scopus(收录号：2-s2.0-85119701129)、WOS

基金：Strategic Priority Research Program of Chinese Academy of Sciences (XDA20060501); 2019 Non-funded Science and Technology Research Project of Zhanjiang (20051817454-6338); 2020 Guangdong Ocean University College Student Innovation and Entrepreneurship Project (580520153)

语种：英文

中文关键词：atmospheric heat sources;Tibetan Plateau;Tropical Indian Ocean;land-sea thermal contrast

外文关键词：atmospheric heat sources; Tibetan Plateau; Tropical Indian Ocean; land-sea thermal contrast

中文摘要：Investigating the temporal and spatial distributions of the atmospheric heat sources(AHS)over the Tibetan Plateau-Tropical Indian Ocean(TP-TIO)region is of great importance for the understanding of the evolution and development of the South Asian summer monsoon(SASM).This study used the Japanese 55-year Reanalysis(JRA-55)data from 1979 to 2016 and adopted statistical methods to study the characteristics of the AHS between the TP and TIO,and theirs link to the SASM on an interannual scale.The results indicated that the monthly variations of the AHS in the two regions were basically anti-phase,and that the summer AHS in the TP was obviously stronger than that in the TIO.There were strong AHS and atmospheric moisture sink(AMS)centers in both the eastern and western TP in summer.The AHS center in the east was stronger than that in the west,and the AMS centers showed the opposite pattern.In the TIO,a strong AHS center in the northwest-southeast direction was located near 10°S,90°E.Trend analysis showed that summer AHS in the TIO was increasing significantly,especially before 1998,whereas there was a weakening trend in the TP.The difference of the summer AHS between the TP and TIO(hereafter IQ)was used to measure the thermal contrast between the TP and the TIO.The IQ showed an obvious decreasing trend.After 1998,there was a weak thermal contrast between the TP and the TIO,which mainly resulted from the enhanced AHS in the TIO.The land-sea thermal contrast,the TIO Hadley circulation in the southern hemisphere and the SASM circulation all weakened,resulting in abnormal circulation and abnormal precipitation in the Bay of Bengal(BOB).

外文摘要：Investigating the temporal and spatial distributions of the atmospheric heat sources (AHS) over the Tibetan Plateau-Tropical Indian Ocean (TP-TIO) region is of great importance for the understanding of the evolution and development of the South Asian summer monsoon (SASM). This study used the Japanese 55-year Reanalysis (JRA-55) data from 1979 to 2016 and adopted statistical methods to study the characteristics of the AHS between the TP and TIO, and theirs link to the SASM on an interannual scale. The results indicated that the monthly variations of the AILS in the two regions were basically anti-phase, and that the summer AILS in the TP was obviously stronger than that in the TIO. There were strong AVIS and atmospheric moisture sink (AMS) centers in both the eastern and western TP in summer. The AHS center in the east was stronger than that in the west, and the AMS centers showed the opposite pattern. In the TIO, a strong AHS center in the northwest-southeast direction was located near 10 degrees S, 90 degrees E. Trend analysis showed that summer AHS in the TIC) was increasing significantly, especially before 1998, whereas there was a weakening trend in the TP. The difference of the summer AHS between the TP and TIO (hereafter IQ) was used to measure the thermal contrast between the TP and the TIO. The IQ showed an obvious decreasing trend. After 1998, there was a weak thermal contrast between the TP and the TIO, which mainly resulted from the enhanced AHS in the TIO. The land-sea thermal contrast, the TIO Hadley circulation in the southern hemisphere and the SASM circulation all weakened, resulting in abnormal circulation and abnormal precipitation in the Bay of Bengal (BOB).