Interhemispheric antiphasing of neotropical precipitation during the past millennium
Significance: Understanding Intertropical Convergence Zone (ITCZ) responses to external forcing is critical for predicting climate change in a warming world. We analyzed paleoclimate records of precipitation change in the neotropics and climate model simulations that span the preindustrial last millennium to assess ITCZ behavior on multicentury timescales. Our results demonstrate that the ITCZ shifted southward during the Little Ice Age in the Atlantic basin in response to relative cooling of the Northern Hemisphere driven by volcanic forcing. This finding contrasts with studies suggesting that changes in ITCZ width and/or strength, rather than a change in mean position, occurred during the Little Ice Age. This reinforces the idea that ITCZ responses to external forcing are region specific.
© 2022 National Academy of Sciences.
|Work Title||Interhemispheric antiphasing of neotropical precipitation during the past millennium|
|License||In Copyright (Rights Reserved)|
|Publication Date||April 18, 2022|
|Publisher Identifier (DOI)||
|Deposited||August 02, 2022|
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