Assimilation study of Doppler radar data in the simulation of offshore strong typhoons

ZHOU Lingli; WANG Zhanggui; WANG Dongfa; ZHAI Guoqing

doi:10.3969/j.issn.0253-4193.2013.03.010

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ZHOU Lingli, WANG Zhanggui, WANG Dongfa, ZHAI Guoqing. Assimilation study of Doppler radar data in the simulation of offshore strong typhoons[J]. Haiyang Xuebao, 2013, 35(3): 87-95. doi: 10.3969/j.issn.0253-4193.2013.03.010

Citation:

ZHOU Lingli, WANG Zhanggui, WANG Dongfa, ZHAI Guoqing. Assimilation study of Doppler radar data in the simulation of offshore strong typhoons[J]. Haiyang Xuebao, 2013, 35(3): 87-95. doi: 10.3969/j.issn.0253-4193.2013.03.010

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Assimilation study of Doppler radar data in the simulation of offshore strong typhoons

doi: 10.3969/j.issn.0253-4193.2013.03.010

1.
Department of Earth Science, Zhejiang University, Hangzhou 310027, China;National Marine Environment Forecast Center, Beijing 100081, China
2.
Zhejiang Meteorology Observatory, Hangzhou 310017, China
3.
National Marine Environment Forecast Center, Beijing 100081, China
4.
Department of Earth Science, Zhejiang University, Hangzhou 310027, China

Received Date: 2012-02-18
Rev Recd Date: 2013-02-10

Abstract

Abstract

Doppler radar reflectivity, radial velocity and unconventional observation data are assimulated by mesoscale numerical model WRF to simulated four strong typhoons landing in Zhejiang and Fujian coast in recent years. The simulated result shows that assimilating radar data could further improve the simulation effect of typhoon track and precipitation distribution and clearly reveal the existence of the strong mesoscale convective system in the spiral cloud band near typhoon center. There is a strong convergence line occurring in the spiral cloud band near typhoon center, which corresponds very well to the observed Doppler CAPPI echo and related closely to the mesoscale heavy rainfall system in the coast area.
- typhoons,
- radar,
- assimilation,
- numerical simulation,

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References(23)

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