Dynamic and thermodynamic influences on precipitation in Northeast Mexico on orbital to millennial timescales.

ABSTRACT: The timing and mechanisms of past hydroclimate change in northeast Mexico are poorly constrained, limiting our ability to evaluate climate model performance. To address this, we present a multiproxy speleothem record of past hydroclimate variability spanning 62.5 to 5.1 ka from Tamaulipas, Mexico. Here we show a strong influence of Atlantic and Pacific sea surface temperatures on orbital and millennial scale precipitation changes in the region. Multiple proxies show no clear response to insolation forcing, but strong evidence for dry conditions during Heinrich Stadials. While these trends are consistent with other records from across Mesoamerica and the Caribbean, the relative importance of thermodynamic and dynamic controls in driving this response is debated. An isotope-enabled climate m

SUBMITTER: Wright KT 

PROVIDER: S-EPMC10119167 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature