| ESTIMATION OF CLOUD LIQUID WATER OVER THE HUBEX AREA USING THE TRMM MICROWAVE IMAGER |
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| 作者姓名： | YAO Zhanyu Li Wangbiao Zhu Yuanjing Zhao Bolin |
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| 作者单位： | Chinese Academy of Meteorological Sciences Beijing 100081 Department of Atmospheric Sciences.Peking University.Beijing 100871，Department of Atmospheric Sciences.Peking University，Beijing 100871，Department of Atmospheric Sciences.Peking University，Beijing 100871，Department of Atmospheric Sciences.Peking University，Beijing 100871 |
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| 基金项目： | * This work is supported by the National Natural Science Foundation of China(49794030);the Science Foundation of China Meteorological Administration;Jilin Provincial Government Joint Laboratory for Weather Modification;the National Key Program of Science and Technology of China(2001BA61OA-06-05). |
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| 摘 要： | The ability of the Tropical Rainfall Measuring Mission Microwave Imager(TRMM/TMI)forcloud liquid water(CLW)retrieval has been demonstrated in this study.Due to the greatsensitivity of the TMI 85.5 GHz channels to CLW,the liquid water path(LWP)ofnonprecipitating clouds over land can be successfully estimated using the VDISORT model basedon the iteration steps.Both the vertical-polarized 85. 5 GHz single-channel method and thepolarization-difference of 85.5 GHz method were applied to the LWP estimates over land regionsduring the Huaihe River Basin Energy and Water Cycle Experiment(HUBEX)in China.Theretrieval results show reasonable agreement with the ground-based microwave radiometermeasurements.When the surface emissivity or skin temperature is difficult to be made sure,thepolarization-difference method shows advantages of providing estimates of LWP especially for lowclouds because of its extremely insensitiveness to the surface skin temperature.
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| 收稿时间： | 2002/3/15 0:00:00 |
| 修稿时间： | 2002/5/25 0:00:00 |
ESTIMATION OF CLOUD LIQUID WATER OVER THE HUBEX AREA USING THE TRMM MICROWAVE IMAGER |
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| YAO Zhanyu,Li Wangbiao,Zhu Yuanjing,Zhao Bolin.ESTIMATION OF CLOUD LIQUID WATER OVER THE HUBEX AREA USING THE TRMM MICROWAVE IMAGER[J].Acta Meteorologica Sinica,2002,16(3):309-316. |
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| Authors: | YAO Zhanyu Li Wangbiao Zhu Yuanjing and Zhao Bolin |
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| Institution: | YAO Zhanyu~ |
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| Abstract: | The ability of the Tropical Rainfall Measuring Mission Microwave Imager(TRMM/TMI)for cloud liquid water(CLW)retrieval has been demonstrated in this study.Due to the great sensitivity of the TMI 85.5 GHz channels to CLW,the liquid water path(LWP)of nonprecipitating clouds over land can be successfully estimated using the VDISORT model based on the iteration steps.Both the vertical-polarized 85. 5 GHz single-channel method and the polarization-difference of 85.5 GHz method were applied to the LWP estimates over land regions during the Huaihe River Basin Energy and Water Cycle Experiment(HUBEX)in China.The retrieval results show reasonable agreement with the ground-based microwave radiometer measurements.When the surface emissivity or skin temperature is difficult to be made sure,the polarization-difference method shows advantages of providing estimates of LWP especially for low clouds because of its extremely insensitiveness to the surface skin temperature. |
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| Keywords: | cloud liquid water(CLW) retrieval TRMM/TMI(Tropical Rainfall Measuring Mission Microwave Imager) |
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