Role of atmospheric resonance and land–atmosphere feedbacks as a precursor to the June 2021 Pacific Northwest Heat Dome event-Reference-Cited by-同舟云学术

Role of atmospheric resonance and land–atmosphere feedbacks as a precursor to the June 2021 Pacific Northwest Heat Dome event

Published:2024-01-16 Issue:4 Volume:121 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:

Li Xueke¹^ORCID,Mann Michael E.¹,Wehner Michael F.²^ORCID,Rahmstorf Stefan³⁴^ORCID,Petri Stefan³^ORCID,Christiansen Shannon¹,Carrillo Judit¹

Affiliation:

1. Department of Earth & Environmental Science, University of Pennsylvania, Philadelphia, PA 19104

2. Applied Mathematics and Computational Research Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720

3. Earth System Analysis, Potsdam Institute for Climate Impact Research, Potsdam D-14412, Germany

4. Institute of Physics and Astronomy, University of Potsdam, Potsdam 14476, Germany

Abstract

We demonstrate an indirect, rather than direct, role of quasi-resonant amplification of planetary waves in a summer weather extreme. We find that there was an interplay between a persistent, amplified large-scale atmospheric circulation state and soil moisture feedbacks as a precursor for the June 2021 Pacific Northwest “Heat Dome” event. An extended resonant planetary wave configuration prior to the event created an antecedent soil moisture deficit that amplified lower atmospheric warming through strong nonlinear soil moisture feedbacks, favoring this unprecedented heat event.

Funder

Penn | School of Arts and Sciences, University of Pennsylvania

U.S. Department of Energy

Publisher

Proceedings of the National Academy of Sciences

Subject

Multidisciplinary

Link

https://pnas.org/doi/pdf/10.1073/pnas.2315330121

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