Interannual Variability and Trends of Extreme Rainfall Indices over Benin

Observed rainfall data (1961–2016) were used to analyze variability, trends and changes of extreme precipitation indices over Benin. Nine indices out of the ones developed by the Expert Team on Climate Change Detection and Indices (ETCCDI) were used. The results indicate a mix of downward and upward...

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Autores principales:	Ezéchiel Obada, Eric Adechina Alamou, Eliezer Iboukoun Biao, Esdras B. Josué Zandagba
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	extreme precipitation trends changes adaptation strategies Benin Science Q
Acceso en línea:	https://doaj.org/article/b27a22fa3df345e78572cf03b4b8ff2d
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spelling	oai:doaj.org-article:b27a22fa3df345e78572cf03b4b8ff2d2021-11-25T17:15:21ZInterannual Variability and Trends of Extreme Rainfall Indices over Benin10.3390/cli91101602225-1154https://doaj.org/article/b27a22fa3df345e78572cf03b4b8ff2d2021-10-01T00:00:00Zhttps://www.mdpi.com/2225-1154/9/11/160https://doaj.org/toc/2225-1154Observed rainfall data (1961–2016) were used to analyze variability, trends and changes of extreme precipitation indices over Benin. Nine indices out of the ones developed by the Expert Team on Climate Change Detection and Indices (ETCCDI) were used. The results indicate a mix of downward and upward trends for maximum 1-day precipitation (RX1day) and maximum 5-days precipitation (RX5day). Decrease trends are observed for annual total precipitation of wet days (P), while significant increases are found for the simple daily intensity index (SDII). The number of wet days (RR1) and maximum consecutive dry days (CDD) show a mix of increase/decrease trends. However, the number of heavy (R10) and very heavy (R20) wet days and maximum consecutive wet days (CWD) show decreased trends. All wet indices increased over 1991–2010 in relation to 1971–1990. The increase in all wet indices over Benin could explain the intensification of hydrology, and the increase in the frequency and the intensity of floods. It caused damages such as soil erosion, crop destruction, livestock destruction, displacement of populations, proliferation of waterborne diseases and loss of human life. Some adaptive strategies are suggested to mitigate the impacts of changes in extreme rainfall.Ezéchiel ObadaEric Adechina AlamouEliezer Iboukoun BiaoEsdras B. Josué ZandagbaMDPI AGarticleextreme precipitationtrendschangesadaptation strategiesBeninScienceQENClimate, Vol 9, Iss 160, p 160 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	extreme precipitation trends changes adaptation strategies Benin Science Q
spellingShingle	extreme precipitation trends changes adaptation strategies Benin Science Q Ezéchiel Obada Eric Adechina Alamou Eliezer Iboukoun Biao Esdras B. Josué Zandagba Interannual Variability and Trends of Extreme Rainfall Indices over Benin
description	Observed rainfall data (1961–2016) were used to analyze variability, trends and changes of extreme precipitation indices over Benin. Nine indices out of the ones developed by the Expert Team on Climate Change Detection and Indices (ETCCDI) were used. The results indicate a mix of downward and upward trends for maximum 1-day precipitation (RX1day) and maximum 5-days precipitation (RX5day). Decrease trends are observed for annual total precipitation of wet days (P), while significant increases are found for the simple daily intensity index (SDII). The number of wet days (RR1) and maximum consecutive dry days (CDD) show a mix of increase/decrease trends. However, the number of heavy (R10) and very heavy (R20) wet days and maximum consecutive wet days (CWD) show decreased trends. All wet indices increased over 1991–2010 in relation to 1971–1990. The increase in all wet indices over Benin could explain the intensification of hydrology, and the increase in the frequency and the intensity of floods. It caused damages such as soil erosion, crop destruction, livestock destruction, displacement of populations, proliferation of waterborne diseases and loss of human life. Some adaptive strategies are suggested to mitigate the impacts of changes in extreme rainfall.
format	article
author	Ezéchiel Obada Eric Adechina Alamou Eliezer Iboukoun Biao Esdras B. Josué Zandagba
author_facet	Ezéchiel Obada Eric Adechina Alamou Eliezer Iboukoun Biao Esdras B. Josué Zandagba
author_sort	Ezéchiel Obada
title	Interannual Variability and Trends of Extreme Rainfall Indices over Benin
title_short	Interannual Variability and Trends of Extreme Rainfall Indices over Benin
title_full	Interannual Variability and Trends of Extreme Rainfall Indices over Benin
title_fullStr	Interannual Variability and Trends of Extreme Rainfall Indices over Benin
title_full_unstemmed	Interannual Variability and Trends of Extreme Rainfall Indices over Benin
title_sort	interannual variability and trends of extreme rainfall indices over benin
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/b27a22fa3df345e78572cf03b4b8ff2d
work_keys_str_mv	AT ezechielobada interannualvariabilityandtrendsofextremerainfallindicesoverbenin AT ericadechinaalamou interannualvariabilityandtrendsofextremerainfallindicesoverbenin AT eliezeriboukounbiao interannualvariabilityandtrendsofextremerainfallindicesoverbenin AT esdrasbjosuezandagba interannualvariabilityandtrendsofextremerainfallindicesoverbenin
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Interannual Variability and Trends of Extreme Rainfall Indices over Benin

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