Gong Jiandong, Qiu Chongjian, Wang Qiang, Chen Weimin. 1999: THE NUMERICAL EXPERIMENT IN AREA FOUR-DIMENSIONAL VARIATIONAL DATA ASSIMILATION. Acta Meteorologica Sinica, (2): 131-142. DOI: 10.11676/qxxb1999.012
Citation: Gong Jiandong, Qiu Chongjian, Wang Qiang, Chen Weimin. 1999: THE NUMERICAL EXPERIMENT IN AREA FOUR-DIMENSIONAL VARIATIONAL DATA ASSIMILATION. Acta Meteorologica Sinica, (2): 131-142. DOI: 10.11676/qxxb1999.012

THE NUMERICAL EXPERIMENT IN AREA FOUR-DIMENSIONAL VARIATIONAL DATA ASSIMILATION

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  • Received Date: July 30, 1997
  • Revised Date: March 09, 1998
  • Published Date: February 19, 2013
  • In this paper, a number of numerical experiments are carried out with area meso scale four-dimensional variational data assimilation system. In those experiments, initial condition, modelerror and boundary condition are selected as control variable to adjust. The results of data assimilation and following prediction are tested. The main propose of those experiments is to find out the actions of modelerror and boundary condition in data assimilation, and to select the method for those three as control variable at same time. The results show that modelerror and boundary condition have large affection to forecasterror except initial condition in area mesoscale model. The experiments use a method to correct modelerror, and the results show this correction makes cost function converge quickly in data assimilation and has persistence in the following prediction. The adjust ment to boundary condition makes cost function converge quickly. The results also show that initial condition, modelerror, and boundary condition should select as control variable at same time in data assimilation. Otherwise, it will transpose one error to another error because the model has noability to disting uish where forecast error really comes from, and makes cost function converge quickly but the following forecast has no improvement.
  • 顾震潮.作为初值问题的天气形势数值预报与由地面天气历史演变做预报的等值性.气象学报,1958,29(2):176~186
    丑纪范.天气数值预报中使用过去资料的问题.中国科学,1974,(6):635~644
    邱崇践.模式误差对变分同化过程影响的数值研究.高原气象,1994,13:449~456
    郜吉东,丑纪范.数值天气预报中的两类反问题及一种数值解法——理想试验.气象学报,1994,52(2):129~137
    蒲朝霞,丑纪范.对中尺度遥感资料进行四维同化的共轭方法及其数值研究.高原气象,1994,13:419~429
    Zupanski M.Regional four-dimensional variational dat a as similation in a quasi-operational forecasting environment.Mon Wea Rev,1993,121:2396-2408
    Courtier P and Tal agrand O.Variational as similation of meteorological observations with the adjoint vorticity equation.Quart J Roy Meteor Soc,1987,113:1311-1328
    Errico R M,Raeder K and Vukicevic T.Mesoscale Adjoint Modeling System Version 1.NCAR Tech Note,1994
    Derber J C.Avariational continuous assimilation technique.Mon Wea Rev,1989,117:2437-2466

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