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ATOVS 不同卫星资料在台风模拟中的同化试验研究

李兴武 董海萍 郭卫东 高太长

李兴武, 董海萍, 郭卫东, 高太长. ATOVS 不同卫星资料在台风模拟中的同化试验研究[J]. 热带气象学报, 2012, (2): 157-166. doi: 10.3969/j.issn.1004-4965.2012.02.002
引用本文: 李兴武, 董海萍, 郭卫东, 高太长. ATOVS 不同卫星资料在台风模拟中的同化试验研究[J]. 热带气象学报, 2012, (2): 157-166. doi: 10.3969/j.issn.1004-4965.2012.02.002
LI Xing-wu, DONG Hai-ping, GUO Wei-dong, GAO Tai-chang. DATA ASSIMILATION EXPERIMENTS IN TYPHOON NUMERICAL PREDICTION USING DIFFERENT ATOVS RADIANCE[J]. Journal of Tropical Meteorology, 2012, (2): 157-166. doi: 10.3969/j.issn.1004-4965.2012.02.002
Citation: LI Xing-wu, DONG Hai-ping, GUO Wei-dong, GAO Tai-chang. DATA ASSIMILATION EXPERIMENTS IN TYPHOON NUMERICAL PREDICTION USING DIFFERENT ATOVS RADIANCE[J]. Journal of Tropical Meteorology, 2012, (2): 157-166. doi: 10.3969/j.issn.1004-4965.2012.02.002

ATOVS 不同卫星资料在台风模拟中的同化试验研究

doi: 10.3969/j.issn.1004-4965.2012.02.002

DATA ASSIMILATION EXPERIMENTS IN TYPHOON NUMERICAL PREDICTION USING DIFFERENT ATOVS RADIANCE

  • 摘要: 利用美国国家大气研究中心(NCAR)开发的中尺度模式WRF(ARW)V3.2 及其三维变分同化系统WRF-3DVAR,以1011 号超强台风“ 凡亚比” 为个例,采用连续循环同化的方法对ATOVS 卫星资料进行同化试验,探讨了同化ATOVS 不同卫星资料对“ 凡亚比” 模拟的影响。结果表明,强度影响方面:同化ATOVS不同资料均可有效改善台风强度,台风中心海平面气压平均偏差从42 hPa 下降到18 hPa,但不同资料间的差异并不显著,平均在6 hPa 以内,这表明仅同化ATOVS 资料对台风强度的改善相对有限。路径影响方面:(1)不同卫星的同一种传感器资料效果略有不同,同化NOAA-18 和NOAA-15 的AMSU-A 资料效果较好,NOAA-16 的AMSU-A 效果较差;同化NOAA-15 和NOAA-16 的AMSU-B 资料效果相当,且均优于AMSU-A 资料。(2) 同一颗卫星不同传感器资料的差异较大,同化AMSU-B 资料的改善较为明显,HIRS-3 次之,AMSU-A较差,而同时同化不同资料并没有带来更为明显的改善。(3) 同时同化多颗卫星ATOVS 资料的试验表明,将多种资料引入到同化系统的同时,也带来相应的累积误差,因而仅同化一颗卫星可能比同时同化两颗或三颗卫星ATOVS 资料的效果要好。

     

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出版历程
  • 收稿日期:  2010-08-02
  • 修回日期:  2011-03-28

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