Journal ArticleUnknown
Assessment of <scp>CMIP6</scp> global climate models in reconstructing rainfall climatology of Bangladesh
Author Affiliations
Bangladesh Rice Research Institute, University of Technology Malaysia, Bangladesh Agricultural Research Institute, Begum Rokeya University, ...
Published InInternational Journal of Climatology
Year2021
Citations63
Abstract
Abstract This study evaluated the rainfall historical simulations of 15 Global Climate Models (GCMs) of the Coupled Model Intercomparison Project phase 6 (CMIP6) in replicating annual and seasonal rainfall climatology, their temporal variability and trends in Bangladesh for the period 1979–2014, considering ERA5 (ECMWF Reanalysis 5th Generation) reanalysis as the reference dataset. Shannon's Entropy decision‐analysis was employed for GCMs' rating based on eight statistical indicators and a comprehensive rating metric for the final grading of the GCMs. The majority of the CMIP6 GCMs accurately reproduced the spatial feature of ERA5 rainfall. However, the GCMs underestimated annual rainfall by an average of 190.5 mm, with the highest underestimation in monsoon (131.76 mm) and least in winter (3.52 mm) seasons. Most GCMs…
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