Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/ab2bb2 |
A simple equation to study changes in rainfall statistics | |
Benestad, Rasmus E.; Parding, Kajsa M.; Erlandsen, Helene B.; Mezghani, Abdelkader | |
2019-08-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS
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ISSN | 1748-9326 |
出版年 | 2019 |
卷号 | 14期号:8 |
文章类型 | Article |
语种 | 英语 |
国家 | Norway |
英文摘要 | We test an equation for the probability of heavy 24 h precipitation amounts Pr(X > x) as a function of the wet-day frequency and the wet-day mean precipitation. The expression was evaluated against 9817 daily rain gauge records world-wide and was subsequently used to derive mathematical expressions for different rainfall statistics in terms of the wet-day frequency and the wet-day mean precipitation. This framework comprised expressions for probabilities, mean, variance, and return-values. We differentiated these statistics with respect to time and compared them to trends in number of rainy days and the mean rainfall intensity based on 1875 rain gauge records with more than 50 years of valid data over the period 1961-2018. The results indicate that there has been a general increase in the probability of precipitation exceeding 50 mm/day. The main cause for this increase has been a boost in the intensity of the rain, but there were also some cases where it has been due to more rainy days. In some limited regions there has also been an increase in Pr(X > 50 mm/day) that coincided with a decrease in the number of rainy days. We also found a general increasing trend in the variance and the 10-year return-value over 1961-2018 due to increasing wet-day frequency and wet-day mean precipitation. |
英文关键词 | heavy rainfall probability rain gauge data trend wet-day frequency wet-day mean precipitation rainfall statistics |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000478753700004 |
WOS关键词 | FUTURE CHANGES ; PRECIPITATION ; EXTREME ; CLIMATE ; TEMPERATURE ; DATASET ; EVENTS |
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/185606 |
专题 | 气候变化 |
作者单位 | Norwegian Meteorol Inst, NO-0313 Oslo, Norway |
推荐引用方式 GB/T 7714 | Benestad, Rasmus E.,Parding, Kajsa M.,Erlandsen, Helene B.,et al. A simple equation to study changes in rainfall statistics[J]. ENVIRONMENTAL RESEARCH LETTERS,2019,14(8). |
APA | Benestad, Rasmus E.,Parding, Kajsa M.,Erlandsen, Helene B.,&Mezghani, Abdelkader.(2019).A simple equation to study changes in rainfall statistics.ENVIRONMENTAL RESEARCH LETTERS,14(8). |
MLA | Benestad, Rasmus E.,et al."A simple equation to study changes in rainfall statistics".ENVIRONMENTAL RESEARCH LETTERS 14.8(2019). |
条目包含的文件 | 条目无相关文件。 |
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