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Since the beginning of this year, extreme weather and climate events such as heavy rains, floods, heat waves and droughts have occurred frequently in many places around the world, causing huge economic losses. Experts from the World Meteorological Organization said on the 28th that such events have become the new normal, and climate change caused by greenhouse gas emissions is the main reason.
Climate experts from the World Meteorological Organization said on the 28th that in recent decades, the frequency and intensity of extreme weather events such as heat waves and heavy precipitation have increased. So far this year, heat waves in Asia, Africa, Europe and North America have taken a heavy toll and pose a major threat to human health. According to experts, a variety of climate factors such as El Niño and La Niña may contribute to the occurrence of extreme weather and climate events at different time and space scales, but climate change caused by human activities is the main cause, and it is also the long-term background for the increasing frequency and severity of extreme weather and climate events.
The latest seasonal forecast released by the World Meteorological Organization (WMO) shows that temperatures will be above average in Africa, Europe, most of Asia, and much of tropical parts of North America, Central America and the Caribbean, and South America from July to September, increasing the risk of heat waves and wildfires.
In addition, according to the quarterly forecast recently released by the Copernicus Climate Change Service, the European Union's climate monitoring agency, the surface temperature of most of the world's ocean regions will be above average in the next six months, with the exception of the equatorial Pacific Ocean and the Southern Ocean. This is related to the possible La Niña phenomenon later this year. During La Niña, changes in sea surface temperature in the Pacific Ocean directly affect precipitation patterns across the tropics, which in turn affect temperature, precipitation and wind direction on a global scale, experts say.
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Editor: Wang Yifan