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DOI | 10.1016/j.atmosres.2017.09.020 |
Autocorrelation structure of convective rainfall in semiarid-arid climate derived from high-resolution X-Band radar estimates | |
Marra, Francesco; Morin, Efrat | |
2018-02-01 | |
发表期刊 | ATMOSPHERIC RESEARCH
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ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2018 |
卷号 | 200页码:126-138 |
文章类型 | Article |
语种 | 英语 |
国家 | Israel |
英文摘要 | Small scale rainfall variability is a key factor driving runoff response in fast responding systems, such as mountainous, urban and arid catchments. In this paper, the spatial-temporal autocorrelation structure of convective rainfall is derived with extremely high resolutions (60 m, 1 min) using estimates from an X-Band weather radar recently installed in a semiarid-arid area. The 2-dimensional spatial autocorrelation of convective rainfall fields and the temporal autocorrelation of point-wise and distributed rainfall fields are examined. The auto correlation structures are characterized by spatial anisotropy, correlation distances similar to 1.5-2.8 km and rarely exceeding 5 km, and time-correlation distances similar to 1.8-6.4 min and rarely exceeding 10 min. The observed spatial variability is expected to negatively affect estimates from rain gauges and microwave links rather than satellite and C-/S-Band radars; conversely, the temporal variability is expected to negatively affect remote sensing estimates rather than rain gauges. The presented results provide quantitative information for stochastic weather generators, cloud-resolving models, dryland hydrologic and agricultural models, and multi-sensor merging techniques. |
英文关键词 | Convective rainfall Autocorrelation Semiarid arid climate X-Band weather radar |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000416394400012 |
WOS关键词 | DURATION-FREQUENCY CURVES ; SPACE-TIME VARIABILITY ; WEATHER RADAR ; SPATIAL CHARACTERISTICS ; EXTREME PRECIPITATION ; GLOBAL PRECIPITATION ; GENERATOR ; SYSTEMS ; SATELLITE ; NETWORK |
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/15156 |
专题 | 地球科学 |
作者单位 | Hebrew Univ Jerusalem, Inst Earth Sci, Jerusalem, Israel |
推荐引用方式 GB/T 7714 | Marra, Francesco,Morin, Efrat. Autocorrelation structure of convective rainfall in semiarid-arid climate derived from high-resolution X-Band radar estimates[J]. ATMOSPHERIC RESEARCH,2018,200:126-138. |
APA | Marra, Francesco,&Morin, Efrat.(2018).Autocorrelation structure of convective rainfall in semiarid-arid climate derived from high-resolution X-Band radar estimates.ATMOSPHERIC RESEARCH,200,126-138. |
MLA | Marra, Francesco,et al."Autocorrelation structure of convective rainfall in semiarid-arid climate derived from high-resolution X-Band radar estimates".ATMOSPHERIC RESEARCH 200(2018):126-138. |
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