Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/ab2203 |
On the use of satellite, gauge, and reanalysis precipitation products for drought studies | |
Golian, Saeed1; Javadian, Mostafa2; Behrangi, Ali2 | |
2019-07-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS
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ISSN | 1748-9326 |
出版年 | 2019 |
卷号 | 14期号:7 |
文章类型 | Article |
语种 | 英语 |
国家 | Iran; USA |
英文摘要 | Precipitation is a critical variable to monitor and predict meteorological drought. The WMO recommended standardized precipitation index (SPI) is calculated from gauge (i.e. GPCC), satellite-gauge (GPCP, CHIRPS), reanalysis (i.e. ERA-Interim, and MERRA-2), and satellite-gauge-reanalysis (i.e. MSWEP) over the global domain. Measured differences among the precipitation datasets include metrics such as percent area under drought, number of drought events, spread and correlation in the number of drought events, and critical success index in capturing moderate and severe-exceptional droughts. As precipitation products are available at different lengths and spatial resolutions, sensitivity of drought metrics to record-length and spatial resolution were explored. The results suggest that precipitation-based drought metrics can vary significantly with the choice of precipitation product, its record-lengths, and spatial resolution. These relationships also vary with the severity of drought events with more severe drought events being more sensitive to the differences in resolution and record length. The quantified variation among the products has to be recognized in the interpretation of drought events when a single or a subset of products used. |
英文关键词 | precipitation drought sensitivity analysis record length spatial resolution satellite reanalysis |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000474419200002 |
WOS关键词 | PERFORMANCE ; VEGETATION ; TRENDS ; TMPA |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/184555 |
专题 | 气候变化 |
作者单位 | 1.Shahrood Univ Technol, Dept Civil Engn, Shahrood, Iran; 2.Univ Arizona, Dept Hydrol & Atmospher Sci, Tucson, AZ 85721 USA |
推荐引用方式 GB/T 7714 | Golian, Saeed,Javadian, Mostafa,Behrangi, Ali. On the use of satellite, gauge, and reanalysis precipitation products for drought studies[J]. ENVIRONMENTAL RESEARCH LETTERS,2019,14(7). |
APA | Golian, Saeed,Javadian, Mostafa,&Behrangi, Ali.(2019).On the use of satellite, gauge, and reanalysis precipitation products for drought studies.ENVIRONMENTAL RESEARCH LETTERS,14(7). |
MLA | Golian, Saeed,et al."On the use of satellite, gauge, and reanalysis precipitation products for drought studies".ENVIRONMENTAL RESEARCH LETTERS 14.7(2019). |
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