GENERAL SITUATION ABOUT ACTIVITY OF SUMMER MONSOON OVERSOUTH CHINA SEA IN 2004 ASIAN SUMMER MONSOON INDEX

LI Chun-hui; LIANG Jian-yin

Abstract:

Based on daily NCEP reanalysis data, OLR and satellite rainfall data, the characteristic of the activities of South China Sea summer monsoon(SCSSM) in 2004 were analyzed. The results showed that the establishment of SCSSM was little later than normal and the intensity was stronger than normal. Influenced by the location of the northwest Pacific subtropical high, which was much northward and westward than normal, SCSSM was active mainly in the South China Sea areas. There existed obvious intraseasonal oscillation and two significant periods of SCSSM, one was about 20-30 days and the other about 40-50 days. The transportation of moisture was concentrated on the South China Sea and the northwest Pacific regions, reducing the northward transportation and resulting in drought in southern China

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LI Chun-hui, LIANG Jian-yin. GENERAL SITUATION ABOUT ACTIVITY OF SUMMER MONSOON OVERSOUTH CHINA SEA IN 2004 ASIAN SUMMER MONSOON INDEX [J]. Journal of Tropical Meteorology, 2006, 12(2): 105-112.

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GENERAL SITUATION ABOUT ACTIVITY OF SUMMER MONSOON OVERSOUTH CHINA SEA IN 2004 ASIAN SUMMER MONSOON INDEX

Guangzhou Institute of Tropical and Marine Meteorology, CMA

Abstract: Based on daily NCEP reanalysis data, OLR and satellite rainfall data, the characteristic of the activities of South China Sea summer monsoon(SCSSM) in 2004 were analyzed. The results showed that the establishment of SCSSM was little later than normal and the intensity was stronger than normal. Influenced by the location of the northwest Pacific subtropical high, which was much northward and westward than normal, SCSSM was active mainly in the South China Sea areas. There existed obvious intraseasonal oscillation and two significant periods of SCSSM, one was about 20-30 days and the other about 40-50 days. The transportation of moisture was concentrated on the South China Sea and the northwest Pacific regions, reducing the northward transportation and resulting in drought in southern China

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GENERAL SITUATION ABOUT ACTIVITY OF SUMMER MONSOON OVERSOUTH CHINA SEA IN 2004 ASIAN SUMMER MONSOON INDEX

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