Interhemispheric antiphasing of neotropical precipitation during the past millennium-Reference-Cited by-同舟云学术

Interhemispheric antiphasing of neotropical precipitation during the past millennium

Published:2022-04-18 Issue:17 Volume:119 Page:
ISSN:0027-8424
Container-title:Proceedings of the National Academy of Sciences
language:en
Short-container-title:Proc. Natl. Acad. Sci. U.S.A.

Author:

Steinman Byron A.¹²,Stansell Nathan D.³,Mann Michael E.⁴,Cooke Colin A.⁵^ORCID,Abbott Mark B.⁶^ORCID,Vuille Mathias⁷^ORCID,Bird Broxton W.⁸^ORCID,Lachniet Matthew S.⁹^ORCID,Fernandez Alejandro¹²

Affiliation:

1. Department of Earth and Environmental Sciences, University of Minnesota Duluth, Duluth, MN 55812

2. Large Lakes Observatory, University of Minnesota Duluth, Duluth, MN 55812

3. Department of Earth, Atmosphere and Environment, Northern Illinois University, DeKalb, IL 60115

4. Department of Meteorology and Atmospheric Science, The Pennsylvania State University, State College, PA 16802

5. Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB T6G 2E3, Canada

6. Department of Geology and Environmental Science, University of Pittsburgh, Pittsburgh, PA 15260

7. Department of Atmospheric and Environmental Sciences, University at Albany State University of New York, Albany, NY 12222

8. Department of Earth Sciences, Indiana University–Purdue University, Indianapolis, IN 46202

9. Department of Geoscience, University of Nevada, Las Vegas, NV 89154

Abstract

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.

Funder

National Science Foundation

Publisher

Proceedings of the National Academy of Sciences

Subject

Multidisciplinary

Link

https://pnas.org/doi/pdf/10.1073/pnas.2120015119

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