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CHARACTERISTICS OF ATMOSPHERIC HEAT SOURCE ASSOCIATEDWITH THE SUMMER MONSOON ONSET OVER THE SOUTH CHINASEA AND THE POSSIBLE MECHANISM RESPONSIBLE FOR ITSLATE OR EARLY ONSET

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  • The characteristics of atmospheric heat source associated with the summer monsoon onset in the South China Sea (SCS) are studied using ECMWF reanalysis data from 1979 to 1993. A criterion of the SCS summer monsoon onset is defined by the atmospheric heat source. Applying this criterion to the 15-year (1979 –C 1993) mean field, the onset of the SCS summer monsoon is found to occur in the fourth pentad of May. And this criterion can also give reasonable results for the onset time of the SCS summer monsoon on a year-to-year basis. In addition, pretty high correlation has been found between the onset time of the SCS summer monsoon and the zonal mean vertically integrated heat source at 40°S in April. The causes for the late or early onset of the SCS summer monsoon and the close relationship between the onset time and the zonal mean vertically integrated heat source at 40 °S in April might be explained by the variations in intensity of the Hadley circulation.
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LAN Guang-dong, WEN Zhi-ping, HE Hai-yan. CHARACTERISTICS OF ATMOSPHERIC HEAT SOURCE ASSOCIATEDWITH THE SUMMER MONSOON ONSET OVER THE SOUTH CHINASEA AND THE POSSIBLE MECHANISM RESPONSIBLE FOR ITSLATE OR EARLY ONSET [J]. Journal of Tropical Meteorology, 2004, 10(2): 190-200.
LAN Guang-dong, WEN Zhi-ping, HE Hai-yan. CHARACTERISTICS OF ATMOSPHERIC HEAT SOURCE ASSOCIATEDWITH THE SUMMER MONSOON ONSET OVER THE SOUTH CHINASEA AND THE POSSIBLE MECHANISM RESPONSIBLE FOR ITSLATE OR EARLY ONSET [J]. Journal of Tropical Meteorology, 2004, 10(2): 190-200.
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CHARACTERISTICS OF ATMOSPHERIC HEAT SOURCE ASSOCIATEDWITH THE SUMMER MONSOON ONSET OVER THE SOUTH CHINASEA AND THE POSSIBLE MECHANISM RESPONSIBLE FOR ITSLATE OR EARLY ONSET

Abstract: The characteristics of atmospheric heat source associated with the summer monsoon onset in the South China Sea (SCS) are studied using ECMWF reanalysis data from 1979 to 1993. A criterion of the SCS summer monsoon onset is defined by the atmospheric heat source. Applying this criterion to the 15-year (1979 –C 1993) mean field, the onset of the SCS summer monsoon is found to occur in the fourth pentad of May. And this criterion can also give reasonable results for the onset time of the SCS summer monsoon on a year-to-year basis. In addition, pretty high correlation has been found between the onset time of the SCS summer monsoon and the zonal mean vertically integrated heat source at 40°S in April. The causes for the late or early onset of the SCS summer monsoon and the close relationship between the onset time and the zonal mean vertically integrated heat source at 40 °S in April might be explained by the variations in intensity of the Hadley circulation.

LAN Guang-dong, WEN Zhi-ping, HE Hai-yan. CHARACTERISTICS OF ATMOSPHERIC HEAT SOURCE ASSOCIATEDWITH THE SUMMER MONSOON ONSET OVER THE SOUTH CHINASEA AND THE POSSIBLE MECHANISM RESPONSIBLE FOR ITSLATE OR EARLY ONSET [J]. Journal of Tropical Meteorology, 2004, 10(2): 190-200.
Citation: LAN Guang-dong, WEN Zhi-ping, HE Hai-yan. CHARACTERISTICS OF ATMOSPHERIC HEAT SOURCE ASSOCIATEDWITH THE SUMMER MONSOON ONSET OVER THE SOUTH CHINASEA AND THE POSSIBLE MECHANISM RESPONSIBLE FOR ITSLATE OR EARLY ONSET [J]. Journal of Tropical Meteorology, 2004, 10(2): 190-200.
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