热带气象学报2011，Vol.27Issue(2)：278-282,5.DOI:10.3969/j.issn.1004-4965.2011.02.018
ENSO发展和衰减阶段对云南夏季降水的影响研究
THE INFLUENCE OF DEVELOPING AND DECAYING STAGES OF ENSO ON SUMMER PRECIPITATION IN YUNNAN
摘要
Abstract
Based on the atmospheric data from NCEP reanalysis and precipitation data of 122 stations in Yunnan province, the influence of developing stage and decaying stage of ENSO events on the summer precipitation in the province is studied. The results show that the response of Yunnan summer precipitation to ENSO in the developing stage is very different from that of the decaying stage. During the developing stage of El Nino, most regions of Yunnan have less-than-normal summer precipitation, while in the decaying stage of El Nino, the summer precipitation is more than normal in the west of Yunnan and less than normal in the east. As for La Nina, during its developing stage, most regions of Yunnan have more-than-normal precipitation and the response of Yunnan summer precipitation to ENSO is the strongest. In the decaying stage of La Nina, the response of Yunnan summer precipitation to ENSO is weaker than that in the developing phase and the summer precipitation in most areas of Yunnan is less than normal. From composite analysis of atmospheric circulation, it is found that there is a significant difference in low-latitude circulation during the developing and decaying of ENSO, especially with regard to the impact on the subtropical high pressure and summer monsoon. The developing stage of the La Nina event is a strong influence signal for the summer precipitation of Yunnan, which can be used for short-term climate outlook in Yunnan province.关键词
气候学/ENSO/发展和衰减/合成分析/云南/夏季降水Key words
climatology/ ENSO/ developing and decaying/ composite analysis/ Yunnan province/summer precipitation分类
天文与地球科学引用本文复制引用
刘丽,杨若文,邢冬,曹杰..ENSO发展和衰减阶段对云南夏季降水的影响研究[J].热带气象学报,2011,27(2):278-282,5.基金项目
国家自然科学研究基金(40875054、U0933603) （40875054、U0933603）
云南省自然科学研究基金项目(2009CC002)共同资助 （2009CC002）
