ENGLISH

ESTIMATION OF CLOUD LIQUID WATER OVER THE HUBEX AREA USING THE TRMM MICROWAVE

Source:

    YAO Zhanyu(姚展予)，LI Wanbiao (李万彪),ZHU Yuanjing (朱元竞)

        Chinese Academy of Meteorological Sciences, Beijing 100081

        And ZHAO Bolin (赵柏林)

        Department of Atmospheric Sciences, Peking University, Beijing 100871

        Received March 15, 2002; revised May 25, 2002

        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.

        Key Words:cloud liquid water (CLW), retrieval, TRM M/TMI (Tropical Rainfall Measuring Mission Microwave Imager)

        Editor-in-Chief: Zhou Xiuji (周秀骥)

        EDITORIAL COMMITTEE OF AMS

        Chairman

        Zhou Xiuji (周秀骥): CAMS

        ViceChairmen

        Ding Yihui (丁一汇): National Climate Center, Beijing 100081, China

        Ji Liren (纪立人)： IAP CAS

        Wang Shaowu (王绍武): DG PU Standing Members et al. 31 altogather.

        此外还聘请了一些国际知名的大气科学家为国外编委。

        Foreign Members

        Anthes, Richard A.: UCAR, Boulder, CO 80307 3000, USA

        Chameides, William L.: School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332 0340, USA

        Lau, William K. M.: NASA, Goddard Space Flight Center, Mail Code 913, Greenbelt, MD 20771, USA

        Liu Shaw C.: Aeronomy Laboratory NOAA/ERL, 325 Broadway, Boulder, CO 80303 3328, USA

        Longhetto, A.: Consiglio Nazionale delle Ricerche Istituto di Cosmo Geofisica, 10133 Torino, Italy

        Serafin, Robert J.: NCAR, Boulder, CO80307-3000, USA

        Tanaka, M.: Upper NCAR,　Boulder, CO 803073000, USA Atmosphere Research Laboratory, Faculty of Science Tohoku University, Sendai, Japan

        Wang Bin: Department of Meteorology, University of Hawaii at Manoa, Honolulu, HI 96822 USA

        Wang Wei-Chyung: Atmospheric Sciences Research Center, State University of New York at Albany, 100 Fuller Road, Albany, NY 12205, USA

        Yasunari T.: Institute of Geoscience, University of Tsukuba, Ibaraki 305, Japan

        Zhang Da-Lin: Dept. of Meteorology 2423 computer& Space Science Bldg Univ. of Maryland College Park, Maryland, 20742-2425, USA

        According to the statistics of nearly thousand of articles published in the past volumes, the percentage of every division of atmospheric sciences can be listed as follows:

        Synoptic Meteorology， 27%

        Analysis of Weather systems，Atmospheric circulation, monsoon and LFO， Tropical meteorology， Typhoon ， Tibetan plateau & polar meteorology， Satellite & Radar meteorology

        Climatology，22%

        Climatological statistics， ENSO & Air-Sea Interation and Climatic Teleconnection， Physical climatology & climate modeling ， Climate change & historical climatology，

        Dynamics & Thermodynamics of the Atmosphere， 18%

        Thermodynamics of the Atmosphere，Dynamics of the Atmosphere，Atmospheric nonlinear dynamics， Atmospheric waves

        Atmospheric Physics，15%

        Atmospheric probing & Equipment， Boundary layer meteorology，Cloud & precipitation physics，Radiation，Atmospheric electricity

        Weather Forecasting & Modification，10%

        Atmospheric modeling，General method & application of NWP，Atmospheric experiment， Weather forecasting using synoptic method, & statistical forecasting， Weather modification

        Atmospheric Chemistry，5%

        Applied Meteorology，3%

        Agricultural meteorology， Marine meteorology

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