Yaya, O.S.; Adesina, O.A.; Olayinka, H.A.; Ogunsola, O.E.; Gil-Alana, L.A. Long Memory Cointegration in the Analysis of Maximum, Minimum and Range Temperatures in Africa: Implications for Climate Change. Atmosphere2023, 14, 1299.
Yaya, O.S.; Adesina, O.A.; Olayinka, H.A.; Ogunsola, O.E.; Gil-Alana, L.A. Long Memory Cointegration in the Analysis of Maximum, Minimum and Range Temperatures in Africa: Implications for Climate Change. Atmosphere 2023, 14, 1299.
Yaya, O.S.; Adesina, O.A.; Olayinka, H.A.; Ogunsola, O.E.; Gil-Alana, L.A. Long Memory Cointegration in the Analysis of Maximum, Minimum and Range Temperatures in Africa: Implications for Climate Change. Atmosphere2023, 14, 1299.
Yaya, O.S.; Adesina, O.A.; Olayinka, H.A.; Ogunsola, O.E.; Gil-Alana, L.A. Long Memory Cointegration in the Analysis of Maximum, Minimum and Range Temperatures in Africa: Implications for Climate Change. Atmosphere 2023, 14, 1299.
Abstract
This paper deals with the analysis of the temperatures in a group of 36 African countries. By looking at the maximum, minimum and the range (the difference between the maximum and the minimum) and using a long memory model based on fractional integration and cointegration, we first show that all series display a long memory pattern, with a significant positive time trend in 29 countries for the maximum temperatures and in 33 for the minimum ones. Looking at the range, the estimated value for the order of integration is smaller than the one based on maximum or minimum temperatures in 17 countries. Performing fractional cointegration tests between the maximum and minimum temperatures, our results indicate that the two series cointegrate in the classical sense (i.e., with a short memory equilibrium relationship) in a group of 11 countries, and there is another group of eight countries displaying cointegration in a fractional sense. The remaining 17 countries with no evidence of cointegration are therefore at the very high risk of climate change due to the absence of long-term comovement in their maximum and minimum temperatures. Findings in this paper are of tremendous interpretations and relevance for the analysis and climate projections in Africa.
Keywords
Africa; maximum temperatures; minimum temperature; fractional integration; fractional cointegration
Subject
Environmental and Earth Sciences, Atmospheric Science and Meteorology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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