Year: 2007
Type: article
Abstract: A U‐Th dated 90,000 year‐long speleothem oxygen isotope record from southern Brazil anti‐correlates remarkably with the cave calcite records from eastern China, but positively correlates with the speleothem record from northeastern Brazil, suggesting an interhemispheric anti‐phasing of rainfall on both millennial and orbital timescales, likely related to displacement in the mean position of the intertropical convergence zone and associated asymmetry in Hadley circulation. The phase relationships among these records are consistent with the hypothesis that abrupt climate events during the last glacial period are triggered by oceanic circulation changes in the high latitudes and enhanced by tropical feedbacks.
Source: Geophysical Research Letters
DOI: 10.1029/2007gl031149
Institutions: University of Minnesota, Nanjing Normal University
Language: English
Subfield: Atmospheric Science
Field: Earth and Planetary Sciences
Domain: Physical Sciences
SDG: Climate action
Open Access status: bronze
OpenAlex ID: W1651909790