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10 January: a summary from the Copernicus Climate Change Service stated that 2024 was the warmest year since records began in 1850, with an average global surface temperature reaching 1.6 °C above pre-industrial levels, surpassing for the first time the 1.5 °C warming target set by the Paris Agreement.
Warming over land increases the severity and frequency of droughts around much of the world. [57] [58]: 1057 In some tropical and subtropical regions of the world, there will probably be less rain due to global warming. This will make them more prone to drought.
In a 2024 survey, 76.3% of responding IPCC lead authors and review editors projected at least 2.5 °C of global warming by 2100; only 5.79% forecast warming of 1.5 °C or less. [98] January: the World Economic Forum projected that, by 2050, directly and indirectly, climate change will cause 14.5 million deaths and $12.5 trillion in economic losses.
Between 1.5 and 2.5 billion people live in areas with regular water security issues. If global warming reaches 4 °C (7.2 °F), water insecurity would affect about twice as many people. [185] Water resources are likely to decrease in most dry subtropical regions and mid-latitudes. But they will increase in high latitudes.
Publicity has surrounded claims of a global warming hiatus during the period 1998–2013. The exceptionally warm El Niño year of 1998 was an outlier from the continuing temperature trend, and so subsequent annual temperatures gave the appearance of a hiatus: by January 2006, it appeared to some that global warming had stopped or paused. [2]
Efforts to banish SO2 as a harmful air pollutant in China and elsewhere over the last decade have dampened its cooling effect and "unmasked" heat caused by greenhouse gases, thereby contributing ...
5 May: a study published in Nature used an observationally calibrated ice sheet–shelf model to project that with 2 °C global warming, Antarctic ice loss will continue at its current pace; but that current policies would allow 3 °C warming and give an abrupt jump around 2060 to an order of magnitude increase in the rate of sea-level rise (to ...
As reported by the Intergovernmental Panel on Climate Change (IPCC), most of the observed global warming since the mid-20th century is very likely due to human-produced emission of greenhouse gases and this warming will continue unabated if present anthropogenic emissions continue or, worse, expand without control.