التفاصيل البيبلوغرافية
| العنوان: |
Spatio-temporal distribution of intensity and frequency of extreme temperature events over Nigeria. |
| المؤلفون: |
Ogolo, Emmanuel O.1 (AUTHOR), Ojo, Olusola S.1 (AUTHOR) ojoso@futa.edu.ng, Olabisi, Israel O.1,2 (AUTHOR) |
| المصدر: |
Theoretical & Applied Climatology. Dec2024, Vol. 155 Issue 12, p9961-9980. 20p. |
| مصطلحات موضوعية: |
*COLD (Temperature), *COASTAL forests, *CLIMATE change, *SEASONS, *TEMPERATURE, *CLIMATIC zones |
| مستخلص: |
This study investigates the spatiotemporal distribution and trends of extreme temperature events across four climatic zones in Nigeria. These were done by analyzing daily maximum and minimum temperature data from 20 synoptic stations for 1983–2017 at 0.5° × 0.5° resolution obtained from NASA Power Archive. The study evaluated trends in 13 extreme temperature indices recommended by ETCCDI and categorized them into intensity and frequency indices for warm and cold events using linear regression and the modified Mann–Kendall test. Results revealed increasing trends in indices related to extremely warm temperatures like annual maximum temperatures (TXx), warm days (TX90p), warm nights (TN90p), summer days (SU25), tropical nights (TR20), and warm spell duration (WSDI), across most regions, indicating more frequent and intense warm extremes. Conversely, decreasing trends were observed in indices associated with extreme cold temperatures including cold days (TX10p), cold nights (TN10p), and cold spell duration (CSDI). Regional and seasonal variations were also observed, with the Sahel and Savannah regions experiencing more pronounced warming trends compared to the Forest and Coastal regions. Some indices exhibited stronger warming trends during the wet season and cooling trends during the dry season. The findings contribute to understanding climate change dynamics in Nigeria and emphasize the urgent need for adequate mitigation and adaptation strategies to address challenges posed by rising temperatures across the different climatic zones in Nigeria. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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