Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD030642 |
Impact of SCATSat-1 Retrieved Wind Vectors on Short-Range WRF Model Predictions Over the South Asia Region | |
Kumar, Prashant; Gairola, R. M. | |
2019-11-26 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:22页码:11994-12009 |
文章类型 | Article |
语种 | 英语 |
国家 | India |
英文摘要 | The Indian Space Research Organization launched SCATterometer Satellite-1 (SCATSat-1) satellite by PSLV-C35 on 26 September 2016 from Sriharikota. In this study, SCATSat-1 retrieved winds are assimilated in the regional atmospheric model subsequent to preliminary evaluation of SCATSat-1 retrieved winds against National Centers for Environmental Prediction final analyses. The Weather Research and Forecasting (WRF) model and its three- and four-dimensional variational (3D-Var and 4D-Var) data assimilation system are used to demonstrate the importance of SCATSat-1 retrieved winds on short-range weather prediction. In the first set of experiments, two parallel runs are performed with and without assimilation of SCATSat-1 retrieved winds using 6-hourly cycling during entire month of December 2016. Results suggest that assimilation of SCATSat-1 retrieved winds improved the WRF model analyses and subsequent forecasts of winds and moisture. In the second set of experiments, parallel assimilation experiments are performed with SCATSat-1 retrieved winds using 3D-Var and 4D-Var method for the entire lifetime of tropical cyclone Ockhi as a case study. Results suggest that assimilation of SCATSat-1 winds has positive impact on Ockhi tropical cyclone prediction with slightly better forecast skill for 4D-Var technique. Moreover, assimilation of SCATSat-1 retrieved winds improved predictions of surface convergence and accumulated rainfall. In the last set of experiments, forecast sensitivity to observations are performed for SCATSat-1 retrieved different resolution winds using the WRF tangent linear and adjoint models for the entire lifetime of tropical cyclone Ockhi. Results suggest that SCATSat-1 retrieved winds have positive impact on tropical cyclone simulation. |
英文关键词 | SCATSat-1 winds variational method forecast WRF model |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000498559400001 |
WOS关键词 | OCEANSAT-2 SCATTEROMETER WINDS ; DATA ASSIMILATION ; ALGORITHM ; SPEED |
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/225813 |
专题 | 环境与发展全球科技态势 |
作者单位 | Space Applicat Ctr ISRO, EPSA, Atmospher & Ocean Sci Grp, Atmospher Sci Div, Ahmadabad, Gujarat, India |
推荐引用方式 GB/T 7714 | Kumar, Prashant,Gairola, R. M.. Impact of SCATSat-1 Retrieved Wind Vectors on Short-Range WRF Model Predictions Over the South Asia Region[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(22):11994-12009. |
APA | Kumar, Prashant,&Gairola, R. M..(2019).Impact of SCATSat-1 Retrieved Wind Vectors on Short-Range WRF Model Predictions Over the South Asia Region.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(22),11994-12009. |
MLA | Kumar, Prashant,et al."Impact of SCATSat-1 Retrieved Wind Vectors on Short-Range WRF Model Predictions Over the South Asia Region".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.22(2019):11994-12009. |
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