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Variations of Latent Heat Flux During Tropical Cyclones over the South China Sea

【摘要】:正Latent heat flux(LHF) exchanges at the air -sea interface play important roles in the formation and development of tropical cyclones(TCs).Usually,the LHF transferred from oceans to atmosphere increases during the intensification stages of the TCs.However,through analyzing a number of TC cases over the South China Sea,it is found that the changes of LHF exhibit a distinct behavior during the intensification stage of the TCs,depending upon their traveling pathways.The air -sea LHF increases while the TCs are intensifying in open sea areas of the South China Sea;and decreases while the TCs are travelling over the narrow area between the Indo -China Peninsula and Hainan Island,even though the TCs are in their intensification stage.For the later case,the decrease in LHF is accompanied by the decrease in surface winds due to the terrain frictions even though the troposphere winds are still increasing.

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