Atmospheric and oceanic parameters derived from global climate model (GCM) simulations have received wide global attention and importance in representing the future world under different scenarios of greenhouse gas emissions. The present study deals with near-surface wind speed in the Bay of Bengal (BoB) obtained from CMIP5 and the upcoming CMIP6 GCMs and validation exercise clearly signify improved performance of CMIP6 GCMs over CMIP5. Multi-model ensemble mean corresponding to the four emission scenarios are constructed using the best performing models of CMIP6 family. The study reveals that near-future changes in wind speed in the BoB are moderate under the low-end scenario of SSP1-2.6. Projected wind speeds in the head BoB are expected to increase or decrease by 20% during June–July–August and December–January–February under high-end scenario by the end of twenty-first century. A positive change up to 30% in the northeast monsoon winds under SSP5-8.5 is projected in the central BoB. Irrespective of the seasons, a net increase amounting to 0.6–0.8 m/s is observed along the east coast of India under SSP2-4.5 scenario by the mid and end of the century. Maximum rise by 25% (0.5–1 m/s) in wind speed is predicted under SSP3-7.0 scenario in the near future. Further, the study points out a decline in wind speed by 0.2–0.8 m/s in the central and southern BoB under the extreme scenario of SSP5-8.5. Strengthening and weakening of winds over the BoB accounts the projected variations in temperature that resulted from global warming and subsequent changes in atmospheric circulation.

从全球气候模型（GCM）模拟得出的大气和海洋参数在代表不同温室气体排放情景下的未来世界方面已受到了全球的广泛关注和重视。本研究处理了从CMIP5和即将到来的CMIP6 GCM获得的孟加拉湾（BoB）的近地表风速，验证工作显然表明CMIP6 GCM的性能优于CMIP5。使用最佳性能的CMIP6系列模型构建了与四种排放情景相对应的多模型集成均值。研究表明，在SSP1-2.6的低端情况下，BoB中风速的近期变化是中等的。在高端情景下，到二十一世纪末，在6月至7月至8月和12月至1月至2月，预计BoB头部的预计风速将增加或减少20％。预计在中央BoB中，在SSP5-8.5下，东北季风中的变化最大为30％。不论季节如何，到本世纪中叶末期，在SSP2-4.5情景下，印度东海岸的净增加量为0.6-0.8 m / s。在不久的将来，根据SSP3-7.0情景，预计风速将最大增加25％（0.5-1 m / s）。此外，研究指出，在SSP5-8.5的极端情况下，中部和南部BoB的风速下降了0.2-0.8 m / s。