Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 Meteorology Hydrology and Water Management. Research and Operational Applications

1 2025

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Assessment of climate change impacts on extreme precipitation in the Okpara Basin at Nanon (Benin)

Obada Ezéchiel, Yarou Halissou, Biao Eliézer Iboukoun, Hounnondaho Freddy Zinsè, Zandagba Josué, Alamou Adéchina Eric

Meteorology Hydrology and Water Management. Research and Operational Applications

2025

Vol. 13, Iss. 2

71--86

Extreme weather events have significant impacts on society, water resources, health, and agriculture. In this research, we analyze recent (1951-2020) and projected (2030-2099) trends in extreme precipitation indices within the Okpara Basin at the Nanon outlet. To achieve this, eight indices of extreme precipitation indices recommended by the Expert Team on Climate Change Detection and Indices (ETCCDI) were calculated using daily observations and outputs from SSP245 and SSP585 scenarios based on the AWI-CM, INM-CM, and EC-Earth3 models. The Mann-Kendall and Student’s t-test methods were applied to examine trends and changes in time series of extreme indices. The findings reveal that over the historical period, consecutive wet days (CWD) and the number of wet days (R1mm) showed non-significant increasing trends. The consecutive dry days (CDD), RX5day, R95p, and R99p indices indicated non-significant downward trends. Over the projected period, the CWD and CDD indices exhibit downward or upward trends depending on the scenario and climate model: the RX1day, RX5day, R95p, R99p, R1mm, and PRCPTOT indices display upward trends for all scenarios and models. An intensification of wet conditions is therefore expected in the basin, and it is important for basin managers, planners, and decision-makers to develop strategies to prevent and properly manage possible water-related crises in the basin.