How Accurately Can Satellite Products (TMPA and IMERG) Detect Precipitation Patterns, Extremities, and Drought Across the Nepalese Himalaya?
文献类型：期刊论文
| 作者 | Sharma, Shankar7; Khadka, Nitesh5,6; Hamal, Kalpana4,5; Shrestha, Dibas7; Talchabhadel, Rocky3; Chen, Yingying1,2 |
| 刊名 | EARTH AND SPACE SCIENCE
 |
| 出版日期 | 2020-08-01 |
| 卷号 | 7期号:8页码:e2020EA001315 |
| DOI | 10.1029/2020EA001315 |
| 产权排序 | 2 |
| 通讯作者 | Sharma, Shankar(sharma.sh969@gmail.com) |
| 文献子类 | Article |
| 英文摘要 | This study aims to assess the accuracy of two satellite-based precipitation products (SBPPs), that is, Tropical Rainfall Measurement Mission (TRMM)-based Multi-satellite Precipitation Analysis (TMPA) and its upgraded version Integrated Multi-Satellite Retrievals for Global Precipitation Measurement (IMERG), in capturing spatial and temporal variation of precipitation and their application for extreme events (high-intensity precipitation and drought). They were evaluated against 142-gauge stations from Nepal during 2001-2018. The results show that, in general, both SBPPs show the overall characteristics of precipitation patterns, although underestimated the mean annual precipitation during the study period. It was also noted that IMERG product yields better performance to detect precipitation events (probability of detection) and no-precipitation events (false alarm ratio) than TMPA. Based on four different extreme precipitation indices: heavy precipitation events (R10mm), extreme precipitation events (R25mm), five consecutive dry days (CDD), and five consecutive wet days (CWD), it was observed that the SBPPs underestimated the frequency of R25mm and CDD spells while overestimated R10mm and CWD spells. Additionally, both SBPPs exhibited considerable capabilities in capturing the drought events during the study period. Overall, the drought event, bias, and frequency show that the IMERG product has slightly better capabilities to capture drought than the TMPA product. In general, IMERG was found to be superior at a daily timescale, while TMPA shows consistent performance on a monthly scale during the study period. Furthermore, there is still space for further improvement of IMERG rainfall retrieval algorithms. |
| 电子版国际标准刊号 | 2333-5084 |
| WOS关键词 | GPM-IMERG ; RAINFALL PRODUCTS ; GAUGE DATA ; TRMM 3B42 ; DATA SETS ; REGION ; VALIDATION ; INDEX |
| WOS研究方向 | Astronomy & Astrophysics ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000566210700012 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 源URL | [http://ir.imde.ac.cn/handle/131551/35599]  |
| 专题 | 中国科学院水利部成都山地灾害与环境研究所 |
| 通讯作者 | Sharma, Shankar |
| 作者单位 | 1.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Natl Tibetan Plateau Data Ctr, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing, Peoples R China; 3.Kyoto Univ, Disaster Prevent Res Inst, Kyoto, Japan; 4.Chinese Acad Sci, Int Ctr Climate & Environm Sci, Inst Atmospher Phys, Beijing, Peoples R China; 5.Univ Chinese Acad Sci, Beijing, Peoples R China; 6.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu, Peoples R China; 7.Tribhuvan Univ, Cent Dept Hydrol & Meteorol, Kirtipur, Nepal; |
| 推荐引用方式 GB/T 7714 | Sharma, Shankar,Khadka, Nitesh,Hamal, Kalpana,et al. How Accurately Can Satellite Products (TMPA and IMERG) Detect Precipitation Patterns, Extremities, and Drought Across the Nepalese Himalaya?[J]. EARTH AND SPACE SCIENCE,2020,7(8):e2020EA001315. |
| APA | Sharma, Shankar,Khadka, Nitesh,Hamal, Kalpana,Shrestha, Dibas,Talchabhadel, Rocky,&Chen, Yingying.(2020).How Accurately Can Satellite Products (TMPA and IMERG) Detect Precipitation Patterns, Extremities, and Drought Across the Nepalese Himalaya?.EARTH AND SPACE SCIENCE,7(8),e2020EA001315. |
| MLA | Sharma, Shankar,et al."How Accurately Can Satellite Products (TMPA and IMERG) Detect Precipitation Patterns, Extremities, and Drought Across the Nepalese Himalaya?".EARTH AND SPACE SCIENCE 7.8(2020):e2020EA001315. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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