Modern anthropogenic drought in Central Brazil unprecedented during last 700 years.

ABSTRACT: A better understanding of the relative roles of internal climate variability and external contributions, from both natural (solar, volcanic) and anthropogenic greenhouse gas forcing, is important to better project future hydrologic changes. Changes in the evaporative demand play a central role in this context, particularly in tropical areas characterized by high precipitation seasonality, such as the tropical savannah and semi-desertic biomes. Here we present a set of geochemical proxies in speleothems from a well-ventilated cave located in central-eastern Brazil which shows that the evaporative demand is no longer being met by precipitation, leading to a hydrological deficit. A marked change in the hydrologic balance in central-eastern Brazil, caused by a severe warming trend, can be iden

SUBMITTER: Strikis NM 

PROVIDER: S-EPMC11258244 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature