Spatiotemporal evaluation of rainfall trend during 1979-2019 in seven climatic zones of Bangladesh

Quantification of rainfall, temperature, and reference evapotranspiration trend and their interrelationship in sub-climatic zones of Bangladesh

“…Diverse patterns and indicators of changing weather patterns derived from preliminary data demonstrate that the mean underlying earth’s temperature has been climbing since the mid-nineteenth century, with the largest advancements documented since the mid-1970s [ 2 , 3 ]. Evapotranspiration (ET), in addition to rainfall and temperature, is a significant climatological component [ 4 ]. It has become an essential part of the water system and significantly affects agriculture, hydrology, and ecology.…”

“…Various anthropogenic actions and environmental degradation have had a significant impact on the waterways, causing an issue with water management. Any heat flux and precipitation difference substantially affect ecosystem functioning [ 4 , 10 ]. Anthropogenic global warming and the potential effects of humans and domesticated livestock on the environment might worsen the dryness situation in south Asia, particularly in Bangladesh [ 11 ].…”

“…This fluctuating heterogeneous observation could be the effect of increased temperature and reference evapotranspiration. Numerous investigators in distinct geographical areas have analysed precipitation and temperature trends [ 4 , [23] , [24] , [25] ].…”

“…Also, in sub-climatic zones, no study considered ET 0 and rainfall trends. However, Rahman & Azim [ 4 ] observed spatiotemporal rainfall trends in sub-climatic zones with limited methodological illustrations of the Mann-Kendall trend test instead of the Modified Mann-Kendall test. Thus, the study’s objectives are (i) to investigate the spatiotemporal trends and magnitudes of rainfall, temperature and ET 0 ; (ii) to determine the existence of relationships between rainfall, temperature, and ET 0 ; and (iii) to examine the overall net changes in climatic parameters across sub-climatic zones of Bangladesh.…”

Analysis of the onset, withdrawal, and variability of monsoon rainfall in the face of climate change

“…The study of spatiotemporal variations in precipitation has received considerable attention in recent years due to its significance in natural systems and human society [1][2][3][4][5][6][7]. Based on daily precipitation data, numerous studies have revealed a considerable increase in extreme rainfall events and annual maximums globally [7][8][9].…”