ENGLISH

THE ENERGY BUDGETS UNDER DIFFERENT SYNOPTIC CONDITIONS

Source:

OVER HUAIHE RIVER BASIN

DURING HUBEX FIELD OBSERVATION PERIODS IN 1999

HU Guoquan (胡国权) and DING Yihui （丁一汇）

        National Meteorological Center, Beijing 100081, China

        Received February 20, 2002; revised May 20, 2002

        ABSTRACT

        In different synoptic conditions and at different time scales, the analysis of the energy budgets by Bowen Ratio Method and Bulk Schemes over Huaihe River Basin during the field observation periods of HUBEX in 1999 shows that, (1) the averaged latent heat flux is an order of magnitude more than the averaged sensible heat flux during the observation period; (2) the variation of total cloud amount is out of phase with the terms of energy budgets except for the downward longwave radiation which maybe is related to the cloud's height and class; (3) the values of sensible and latent heat fluxes are small during rain episodes, but thereafter, the values become high and then up to maximum. It is similar to the other terms of the energy budgets except for the downward longwave radiation. The diurnal variation of energy budgets indicates that the daytime precipitation exerts great influence to the energy budgets, but the nighttime precipitation makes little influence; (4) the variation of the latent heat flux is in phase with the evaporation, which indicates that the latent heat flux calculated by bulk schemes is reliable; (5) the means of the sensible and latent heat flux and momentum flux by bulk schemes for the time period from May to August are, respectively, 30.71 W/m2, 116.81 W/m2, 2.86×10-2 N/m2 in 1998 and 30.28 W/m2, 107.35W/m2,2.74×10-2N/m- in 1999. The values of these two years are similar. During summer in 1999 the magnitude and activity of sensible heat flux are strongest in June and those of the latent heat flux are in August.

        Key words: HUBEX (Huaihe River Basin energy and weter cycle EXperiment), energy budgets,different synoptic conditions

        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:

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        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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