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It is expected that over the course of the 21st century, the annual global precipitation over land will increase due to a higher global surface temperature. [7]: 85 A warming climate makes extremely wet and very dry occurrences more severe. There can also be changes in atmospheric circulation patterns. This will affect the regions and frequency ...
Global warming projections indicate that surface air warming for a "high scenario" is 4 C, with a likely range of 2.4–6.4 C by 2100. [25] A temperature increase of this size would alter the biology and the ecology of many mosquito vectors and the dynamics of the diseases they transmit such as malaria.
Multiple sources suggest that this increase in strengthening and precipitation in recent hurricanes is due to climate change. [17] [16] [18] [19] Hurricane Irma and Maria had a total of 510 millimetres (20 in) of rainfall. In Cuba, Hurricane Irma sustained precipitation was at 270 millimetres (10.8 in) per hour.
In January 2021 scientists reported that reductions in air pollution due to worldwide COVID-19 lockdowns in 2020 were larger than previously estimated. It was concluded that, because of the impact of the COVID-19 pandemic on the climate during that year, a slight warming of Earth's climate during the year was seen instead of a slight cooling.
The COVID-19 pandemic was confirmed in Jamaica on 10 March 2020. This was during the 2019–2020 dengue fever epidemic that affected Latin America and the Caribbean. On 11 January 2022, Jamaica overtook China in terms of the number of confirmed cases.
The Global Carbon Project estimated that global daily CO 2 emissions may have been reduced by 17% during the most intense periods of COVID-19 shutdowns, but the WMO's Greenhouse Gas Bulletin indicated that this short-term impact cannot cause 2020's annual figure to exceed the 1 ppm natural inter-annual variability. [16] Australia bushfires:
5 May: The United Nations Environment Programme's Global Methane Assessment forecast that human-caused methane emissions can be reduced by up to 45 percent this decade and would avoid nearly 0.3 °C of global warming by 2045, and can be consistent with keeping the 1.5˚C goal for the century. [134]
Moreover, the degradation of rainforests contributes to climate change by releasing stored carbon into the atmosphere, creating a feedback loop that further accelerates global warming. [1] [2] [3] A study highlighted in a 2022 Nature article underscores the broader climate benefits of tropical forests beyond carbon storage. Tropical forests ...