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Climate change in Bangladesh is expected to have an impact on the Dhaka River System water quality, with increased monsoon flows and lower summer flows. However, these changes will not greatly affect the extremes of water quality to any great extent due to the overwhelming impact of pollutant discharges into the system. [20]
There are numerous effects of climate change on agriculture, many of which are making it harder for agricultural activities to provide global food security.Rising temperatures and changing weather patterns often result in lower crop yields due to water scarcity caused by drought, heat waves and flooding. [5]
Bangladesh is known for its vulnerability to climate change and more specifically to natural disasters. It is important to mention the fact that the location of the country is vulnerable for the presence for three powerful rivers, Asian rivers, Brahmaputra, Ganges and the Meghna along with their numerous tributaries that could result massive floods.
Because of Bangladesh's fertile soil and normally ample water supply, rice can be grown and harvested three times a year in many areas. [9] Due to a number of factors, Bangladesh's labour-intensive agriculture has achieved steady increases in food grain production despite the often unfavorable weather conditions. [9]
A drought is a period of drier-than-normal conditions. [1]: 1157 A drought can last for days, months or years.Drought often has large impacts on the ecosystems and agriculture of affected regions, and causes harm to the local economy.
For instance, the National Diet of Japan had passed an official Climate Change Adaptation Act in 2018, [3]: 1508 while Bangladesh has drawn up an extensive Bangladesh Delta Plan which covers all future development in the context of climate adaptation and would be funded by 2.5% of the annual GDP.
Although droughts are common in the Amazon during El Niño events, studies indicate that global warming likely played a bigger role than the 2023-2024 El Niño event in the 2023 Amazon's record drought. [37] The 2024 Rio Grande do Sul floods in May of that year were caused by historical heavy rains and storms in the southern Brazilian state.
From April to July, Bangladesh was hit by heavy rainfall and a series of devastating floods along the Brahmaputra river, with notably destructive incidents in May, July; [3] the ability of the rice crops to survive this was reduced by the growing monoculture of high-yielding varieties (HYV) of rice. In addition, neighbouring India declined to ...