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AGU: As Earth Heats Up, Rain Pours Down
As Earth Heats Up, Rain Pours DownGlobal Warming Conjures Up Images Of Drought And Fires In The Minds Of Many, But A New Study Finds Most Communities Will Encounter Heavy Rainfall, Excessive Heat And Their Combined Repercussions.
14 September 2023
WASHINGTON — Earth’s land masses have a higher chance of becoming wetter than drier as temperatures rise. In a new study, researchers found that co-occurring precipitation and heat extremes will become more frequent, severe and widespread under climate change, more so than dry and hot conditions.
When wet-hot conditions strike, heat waves first dry out the soil and reduce its ability to absorb water. Subsequent rainfall has a harder time penetrating the soil and instead runs along the surface, contributing to flooding, landslides and crop failures.
“These compound climate extremes have attracted considerable attention in recent decades due to their disproportionate pressures on the agricultural, industrial and ecosystems sectors — much more than individual extreme events alone,” said Haijiang Wu, a researcher at China’s Northwest A&F University and the lead author of the study. The research was published in Earth’s Future, AGU’s journal for interdisciplinary research on the past, present and future of our planet and its inhabitants.
…
They found that while some regions of the world will become drier as temperatures rise — such as South Africa, the Amazon and parts of Europe — many regions, including the eastern United States, eastern and southern Asia, Australia and central Africa will receive more precipitation. Wet-hot extremes will also cover a larger area and be more severe than dry-hot extremes.
Many regions will experience an increase in wet-hot extreme weather. Credit: AGU modified from Su et al. (2023)
…
14 September 2023
WASHINGTON — Earth’s land masses have a higher chance of becoming wetter than drier as temperatures rise. In a new study, researchers found that co-occurring precipitation and heat extremes will become more frequent, severe and widespread under climate change, more so than dry and hot conditions.
When wet-hot conditions strike, heat waves first dry out the soil and reduce its ability to absorb water. Subsequent rainfall has a harder time penetrating the soil and instead runs along the surface, contributing to flooding, landslides and crop failures.
“These compound climate extremes have attracted considerable attention in recent decades due to their disproportionate pressures on the agricultural, industrial and ecosystems sectors — much more than individual extreme events alone,” said Haijiang Wu, a researcher at China’s Northwest A&F University and the lead author of the study. The research was published in Earth’s Future, AGU’s journal for interdisciplinary research on the past, present and future of our planet and its inhabitants.
…
They found that while some regions of the world will become drier as temperatures rise — such as South Africa, the Amazon and parts of Europe — many regions, including the eastern United States, eastern and southern Asia, Australia and central Africa will receive more precipitation. Wet-hot extremes will also cover a larger area and be more severe than dry-hot extremes.
Many regions will experience an increase in wet-hot extreme weather. Credit: AGU modified from Su et al. (2023)
…
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