Cloud Cover Reduced By Large-Scale Deforestation

We found decreases in global low-level clouds and tropical high-level clouds from deforestation,” says lead author Dr Hao Luo from the Institute for Meteorology at Leipzig University, who co-authored the paper with his institute colleague Professor Johannes Quaas and Professor Yong Han from Sun Yat-sen University in China. Johannes Quaas adds: “Low-level clouds have a cooling effect on the climate because they reflect a lot of sunlight.” The researchers analysed idealised deforestation simulations using climate models and reanalyses, and on this basis provided insights into local decreases in global low-level clouds and tropical high-level clouds as a result of large-scale deforestation. “The decreased cloud cover can be explained by alterations in surface turbulent heat flux, which diminishes uplift and moisture to varying extents,” says Professor Quaas, who also works at the German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig. According to the researchers, the impact of the different meteorological processes in forests and deforested areas on clouds and the associated radiative balance has not yet been sufficiently studied. For example, researchers in meteorology and biodiversity science are currently investigating the role of forest biodiversity and its impact on clouds.

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Cloud Cover Reduced By Large-Scale Deforestation

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