Validity of the Köppen-Geiger classification for the study of local climate change in eastern Cuba
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Abstract
Accurate characterization of climate change at the local scale is fundamental for adaptation in key sectors such as agriculture and conservation. This study aimed to identify a suitable climate classification to characterize the present and future dynamics of the local climate in eastern Cuba. The usefulness of the Köppen-Geiger classification and the Bioclimatic Regime Type (BRT) classification for representing the climatic complexity of the region was evaluated and compared. Using data from WorldClim v2.1 (reference period 1970–2000) and projections from five CMIP6 Global Climate Models for 2050 and 2100 under the SSP2-4.5 and SSP5-8.5 scenarios, 23 topoclimates were classified. The results showed that, while the Köppen-Geiger classification indicated stability for 70% of the topoclimates, the TRB classification detected a widespread bioclimatic transition toward drier conditions in 100% of them, demonstrating a progressive increase in water deficit. It was concluded that the TRB classification is more robust and appropriate for local climate change studies, as it more sensitively captures spatial heterogeneity and emerging trends toward aridification, providing an essential baseline for impact assessment and adaptive planning.
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