Climate Variation Assessment Based on Rainfall and Temperature in Ilorin Kwara State Nigeria

Abstract

In recent times and across the globe, the concept of climate has gained much relevance because of its dynamic and complex nature and the significant influence it has on various aspects of the environment, including the increasing threat of global climate change. This study focuses on the assessment of climatic variation in Ilorin based on the variations in rainfall and temperature within the period 1980-2015. Time Series Analysis was used to determine the trend of rainfall and temperature within the period 1980-2015. The 5-Year Moving Average was used to smoothen the time series and to eliminate unwanted fluctuations. Linear Regression was used to estimate the value of variable Y (total rainfall or average minimum temperature), corresponding to a given value of variable X (time), while MAKESEN software was used to determine the temporal trend of rainfall indices within the study period. Furthermore, the study focused on the spatial variations of total rainfall and average minimum temperature in the study area. The result revealed that there is downward trend of 0.814 mm per year in the annual mean rainfall and also there is an upward trend of 0.029 per year in average annual minimum temperature and total annual maximum temperature has an upward trend of 0.01 mm per year. Thus, the rainfall is decreasing and temperature tends to increase. Key word: Climate variability, Rainfall, Temperature, Period, Temporal trend, Kwara state

Gendered vulnerabilities to climate change and farmers’ adaptation responses in Kwara and Nassarawa States, Nigeria

“…The results of the Mann-Kendall test are consistent with previous studies that have reported an increasing trend in temperature in Nigeria. The decreasing trend in rainfall in July in Kwara State (Table 2) is consistent with a study by Olubanjo (2019) which reported a significant decreasing trend in rainfall in the region. However, the increasing trend in rainfall in October is not consistent with the reported decreasing trend in rainfall in Nigeria, suggesting that more research is needed to understand the regional variations in rainfall trends.…”

“…The statistical analysis revealed that there is a decrease in rainfall in Kwara and Nassarawa States. This is consistent with a study by (Olubanjo, 2019) which reported a significant downward trend in rainfall in the region, especially in July which is in the middle of the cropping season. Although more studies are needed in the region to establish the intra-annual rainfall change both men and women surveyed perceived the rainfall differently.…”

Assessment of postharvest handling practices of green leafy vegetables and its challenges among holders in Ilorin, Nigeria

“…Ilorin is the Kwara State capital city https://doi.org/10.58985/jafsb.2024.v02i01.32 (North-Central Nigeria) located within latitude 8 o 33'N and longitude 4 o 33'E. The city is within the tropical savannah climate (Köppen climate classification) with annual rainfall of 990.3-1,310 mm (39-52 in), maximum temperatures ranging between 33-37 o C (91.4-98.6 o F) with the hottest month being March while the relative humidity (RH) ranges between 29-70.2% from month to month [22].…”