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Strategic Study of CAE >> 2012, Volume 14, Issue 10

The application of marine meteorological observation in tropical cyclone data assimilation

1. Nanjing University of Information Science & Technology, Nanjing 210044, China;

2. Institute of Tropical and Marine Meteorology, CMA, Guangzhou 510080, China

Funding project:公益性行业(气象)科研专项(GYHY201006016);广东省自然科学基金创新团队项目(8351030101000002) Received: 2012-06-20 Available online: 2012-10-16 10:51:31.000

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Abstract

Based on the current situation and development plan of marine meteorological observation, it is recognized that there is a need to develop appropriate data assimilation technology for enhancing the efficiency of data utilization. Only in that way, there is a chance to overcome the lack of observation, and to improve numerical weather prediction. In this paper, the multi scale/block batch wise data assimilation is suggested to perform the test of tropical cyclone data assimilation. The results show: the multi scale/block batch wise data assimilation can be appropriate for the data assimilation of tropical cyclone multi scale circulation, satisfy with the flow dependent background error covariance required by tropical cyclone data assimilation, also can use effectively the marine meteorological observation. By means of the multi scale/block batch wise data assimilation, to amplify the utilization of marine meteorological observation, it is an effective approach to obtain high quality tropical cyclone initial circulation.

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