| 摘要: |
| 利用TRMM(Tropical Rainfall Measuring Mission)卫星上搭载的TMI(微波成像仪)资料,以2004年桑达热带风暴和1999年9908号热带风暴为例,定量分析西北太平洋上热带气旋降水与水汽、潜热的关系。结果发现,日平均降水率与气柱水汽量之间存在着很好的双对数关系,对流层中高层(3.0～14km)潜热与地面日平均降水率之间存在很好的双对数关系,在热带气旋密闭云区和外围螺旋云区两个区域内,降水与潜热的相关程度最好,并且每相隔24 h出现一次极大值。本工作试图为台风预报模式提供降水参数化方案。 |
| 关键词: TRMM 降水 气柱水汽量 潜热 热带气旋 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金(40105001);LAPC开放课题项目共同资助 |
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| USING TRMM DATA TO ANALYZE THE RELATIONSHIP BETWEEN PRECIPITATION AND WATER VAPOR PATH, LATENT HEAT OF TROPIC CYCLONES |
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NIU Xiao-lei1, LI Wan-biao1,2, ZHU Yuan-jing1
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1.Department of Atmosphere Sciences, the College of Physics, Peking University, Beijing 100871, China;2.State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Science, Beijing, 100029, China
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| Abstract: |
| The paper uses TRMM/TMI data to quantitatively analyze the relationship between precipitation(P) and water vapor path(W),Latent Heat(LH) of tropic cyclones over the Northwest Pacific Ocean.The calculated results of Tropical Storm Songda in 2004 and No.9908 in 1999 show that a double-logarithm equation fits with the relationship between P and W.And the double-logarithm equation is normally appropriate for the relationship between P and LH over the altitude from 3.0km to 14km during strong latent heat release.The correlation coefficient is relatively high in the region of overcast area and spiral bands and the highest value appears every 24 hours.This research tries to provide a parameter scheme for tropic cyclone forecast models. |
| Key words: TRMM precipitation water vapor path latent heat tropic cyclone |
