本文的工作就是多普勒雷达资料在MM 5模式中的四维变分同化试验。

This paper does the experiments of Doppler radar's Four-dimensional Variational Assimilation in MM5 model.

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因此，MODIS大气可降水量资料经过修正后，可以为卫星反演模式提供同化性较好的输入资料。

So we can conclude that after revised the MODIS atmospheric precipitable water data can be used to satellite derived model and can improve the retrieval accuracy of some satellite remoting model.

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另外，GPS测量可降水量本身可能存在系统误差，在将GPS资料同化入数值预报模式时应关注GPS资料本身的可靠性。

In addition, GPS observation itself maybe have system error, so it is needed to take into account GPS self-reliability when assimilating the GPS data into the numerical prediction model.

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