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August 25, 2025Open Access

Trend analysis of maximum consecutive dry and wet days in Northwestern Nigeria

AIAhmed Mohammed IsmailaUsmanu Danfodiyo University I.Ifabiyi .I.P AAdeleke.E.A

Key Points

A significant trend in extreme weather patterns, with increased dryness noted in various regions.
The analysis used long-term rainfall data from 1980 to 2021, focusing on consecutive dry and wet days.
Research highlighted a strong correlation between dry spells and the Standardized Precipitation Index.
Findings may aid in disaster management and enhance decision-making for agriculture and water resource planning.

Abstract

Abstract Dry and wet spells are frequent extreme weather events that have a major global impact on ecosystems, water resources, and agriculture. This study examine the frequency and trend of maximum consecutive dry and wet spells in Northwestern Nigeria using long-term daily rainfall data from 1980 to 2021. The analysis reveals a significant trend in dry and wet spell patterns, indicating increasing dryness in some areas and wetness specifically Kano,Sokoto and Kebbi. Standardized Precipitation Index (SPI) and dry spells are significantly correlated. The findings of this study can inform decision-making for water resource planning, agriculture, and disaster management. risk reduction of flood and drought.

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