publication . Article . Other literature type . 2004

Wet periods in northeastern Brazil over the past 210 kyr linked to distant climate anomalies

Hai Cheng;
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  • Published: 01 Dec 2004 Journal: Nature, volume 432, pages 740-743 (issn: 0028-0836, eissn: 1476-4687, Copyright policy)
  • Publisher: Springer Nature
Abstract
The tropics are the main source of the atmosphere's sensible and latent heat, and water vapour, and are therefore important for reconstructions of past climate1. But long, accurately dated records of southern tropical palaeoclimate, which would allow the establishment of climatic connections to distant regions, have not been available. Here we present a 210,000-year (210-kyr) record of wet periods in tropical northeastern Brazil—a region that is currently semi-arid. The record is obtained from speleothems and travertine deposits that are accurately dated using the U/Th method. We find wet periods that are synchronous with periods of weak East Asian summer monsoo...
Subjects
free text keywords: Multidisciplinary
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