全球变暖背景下贝宁南部极端降雨的时空变异性

IF 2.1 4区地球科学 Q3 METEOROLOGY & ATMOSPHERIC SCIENCES

Advances in Meteorology Pub Date : 2023-03-08 DOI:10.1155/2023/9902326

S. F. Hounvou, K. F. Guedje, H. Kougbéagbédé, J. Adéchinan, E. Houngninou, A. Houéto

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引用次数: 1

摘要

在全球变暖的背景下评估了贝宁南部极端降水频率和时间的变化。峰值超阈值（POT）用于此目的，1960年至2018年间，六（06）年重现期日降雨量为十七（17）个气象站的阈值。结果表明，在1960年至2018年间，南贝宁多次出现极端降雨，这类降雨的时空分布不均匀。在研究期间，极端降雨强度的频率和变化没有显示出统计上显著的趋势。尽管极端降雨率较低，但每月的趋势与贝宁南部的双峰降雨情况一致。与1990年之前相比，过去几十年在贝宁南部突出的全球变暖伴随着极端降雨量略有上升的趋势。

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Spatiotemporal Variability of Extreme Rainfall in Southern Benin in the Context of Global Warming

Changes in the frequency and timing of extreme precipitation in southern Benin are assessed in the context of global warming. The peak-over-threshold (POT) is used for this purpose, with the six (06) year return period daily rainfall as the threshold over seventeen (17) weather stations between 1960 and 2018. The results show that the South Benin experienced extreme rainfall on many occasions between 1960 and 2018 with a nonuniform spatiotemporal distribution of this category of rainfall. No statistically significant trend in the frequency and variation of extreme rainfall intensities is revealed over the study period. Despite the low rate of extreme rainfall, the monthly trend is consistent with the bimodal rainfall regime in southern Benin. The global warming highlighted in its last decades in southern Benin is accompanied by a slightly upward trend in extreme rainfall compared to the period before 1990.

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来源期刊

Advances in Meteorology 地学天文-气象与大气科学

CiteScore

5.30

自引率

3.40%

发文量

审稿时长

>12 weeks

期刊介绍： Advances in Meteorology is a peer-reviewed, Open Access journal that publishes original research articles as well as review articles in all areas of meteorology and climatology. Topics covered include, but are not limited to, forecasting techniques and applications, meteorological modeling, data analysis, atmospheric chemistry and physics, climate change, satellite meteorology, marine meteorology, and forest meteorology.