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- Title
Spatio-Temporal Analysis of Dry Spell for Agricultural Decision Support in North-Central Nigeria.
- Authors
Usman, Ahmad Aboki; Mamman, Mustapha Baba Aji
- Abstract
This study aims to examine the trend and geospatial variability of dry spells for agricultural decision support. Daily precipitation data spanning from 1981 to 2020 was analyzed using the Instat climatic software to calculate rainfall onset, onset plus 50, length of the growing season, cessation, dry spell 1, and dry spell 2. Multiple regression analysis was used to analyze the trend in maximum dry spell length. Kriging method in Surfer 13 software was used to interpolate and plot dry spell distribution into a spatial grid in the study region. Based on records of daily rainfall data obtained from eight meteorological stations, the spatial distribution of dry spells was generated for the beginning and end of the season. The results obtained revealed a decreasing trend for maximum dry spell length during onset, meaning its recurrence is declining except in Bida, Minna, and Jos that show a positive trend. While the trend for maximum dry spell length at end of the season appears to be positive except for Lafia and Minna that shows a negative trend. The result further indicates that dry spells towards the end of the season are more severe than dry spells at beginning of the season.
- Subjects
NIGERIA; AGRICULTURE; SPATIOTEMPORAL processes; DECISION support systems; KRIGING
- Publication
Environmental & Earth Sciences Research Journal, 2022, Vol 9, Issue 1, p1
- ISSN
2369-5668
- Publication type
Article
- DOI
10.18280/eesrj.090101