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DOI | 10.1029/2018JD029658 |
All-Sky Assimilation of the MWHS-2 Observations and Evaluation the Impacts on the Analyses and Forecasts of Binary Typhoons | |
Xian, Zhipeng1,2; Chen, Keyi1; Zhu, Jiang2 | |
2019-06-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:12页码:6359-6378 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Satellite data assimilation is transitioning from clear-sky to all-sky approach at some operational forecasting centers; the all-sky approach directly assimilates observations under clear, cloudy, and precipitating conditions and shows a positive impact on medium-range forecasts. Although there has been progress in the all-sky technique for the forecasting of high-impact weather processes, such as typhoon, these studies mainly focused on a single typhoon case, and the influence of all-sky assimilation on the forecasts of binary typhoons, which have tracks and intensities that are more complex, is less investigated. In this study, a binary typhoons case (i.e., Typhoons Haitang and Nesat), which occurred in the western Pacific in July 2017, is selected, and the Weather Research and Forecasting data assimilation system is applied to examine the impact of all-sky assimilation of the Microwave Humidity Sounder-2 data from FengYun-3C on the analysis and forecasting of the binary typhoons for the first time. The results show that with more cloud- and precipitation-affected data being assimilated, the vertical structures of temperature and humidity around the core areas of the two typhoons and the forecasts of wind, temperature, and humidity are improved significantly in the all-sky assimilation. These improvements result in the simulated tracks being more similar to the observations, and an error reduction in intensity is achieved in the all-sky assimilation. The heavy rainfall (>250 mm) caused by Nesat over Taiwan is also improved. These encouraging results suggest that all-sky assimilation is able to improve the forecasts of binary typhoons. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000477800000028 |
WOS关键词 | OBSERVATION-ERROR CHARACTERISTICS ; MICROWAVE RADIATIVE-TRANSFER ; DIRECT 4D-VAR ASSIMILATION ; GLOBAL 4DVAR ASSIMILATION ; CURRENT SOUNDER RADIANCES ; AMSU OBSERVATIONS ; WESTERN NORTH ; DIAGNOSIS ; AIRS ; STATISTICS |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/184181 |
专题 | 气候变化 |
作者单位 | 1.Chengdu Univ Informat Technol, Sch Atmospher Sci, Chengdu, Sichuan, Peoples R China; 2.Chinese Acad Sci, Inst Atmospher Phys, Int Ctr Climate & Environm Sci, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Xian, Zhipeng,Chen, Keyi,Zhu, Jiang. All-Sky Assimilation of the MWHS-2 Observations and Evaluation the Impacts on the Analyses and Forecasts of Binary Typhoons[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(12):6359-6378. |
APA | Xian, Zhipeng,Chen, Keyi,&Zhu, Jiang.(2019).All-Sky Assimilation of the MWHS-2 Observations and Evaluation the Impacts on the Analyses and Forecasts of Binary Typhoons.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(12),6359-6378. |
MLA | Xian, Zhipeng,et al."All-Sky Assimilation of the MWHS-2 Observations and Evaluation the Impacts on the Analyses and Forecasts of Binary Typhoons".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.12(2019):6359-6378. |
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