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ZHOU JINGYA,ZHANG TAN,WANG JINGYI. 1983. PRELIMINARY ANALYSIS OF MID-RANGE OSCILLATION OF TROPICAL MONSOON CIRCULATION IN SUMMER, 1979. Acta Oceanologica Sinica, (2):205-212
PRELIMINARY ANALYSIS OF MID-RANGE OSCILLATION OF TROPICAL MONSOON CIRCULATION IN SUMMER, 1979
PRELIMINARY ANALYSIS OF MID-RANGE OSCILLATION OF TROPICAL MONSOON CIRCULATION IN SUMMER, 1979
Received:October 27, 1981  
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Author NameAffiliation
ZHOU JINGYA Department of Geophysics, Peking University 
ZHANG TAN Department of Geophysics, Peking University 
WANG JINGYI Marine Forecasting Center, National Bureau of Oceanography, Beijing 
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Abstract:
      In this paper, the mid-range oscillation with 30-45 days of the tropical monsoon circulation during May-August 1979 was discussed. It is found that there are low and high pressure index patterns for the tropical monsoon circulation in Northern Hemisphere. In the period of low index and the transitional period from low to high index, the group genesis and development of monsoon depressions, tropical cyclones over Arabian Sea and the Bengal Bay, typhoons over the South China Sea and Western Pacific Ocean are always successively observed from west to east. In this period, the rainfall over middle-India and eastern part of China usually increases.
We can use the oscillation of the pressure value over equatorial area to describe the mid-range (30-45 days) oscillation of tropical monsoon circulation and its related circulation systems.
中文摘要:
      In this paper, the mid-range oscillation with 30-45 days of the tropical monsoon circulation during May-August 1979 was discussed. It is found that there are low and high pressure index patterns for the tropical monsoon circulation in Northern Hemisphere. In the period of low index and the transitional period from low to high index, the group genesis and development of monsoon depressions, tropical cyclones over Arabian Sea and the Bengal Bay, typhoons over the South China Sea and Western Pacific Ocean are always successively observed from west to east. In this period, the rainfall over middle-India and eastern part of China usually increases.
We can use the oscillation of the pressure value over equatorial area to describe the mid-range (30-45 days) oscillation of tropical monsoon circulation and its related circulation systems.
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