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Start Over Descriptor "Soil moisture" Topic atmospheric circulation Publication Type Academic Journals Journal proceedings of the national academy of sciences of the united states of america
1 results on '"Soil moisture"'

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

Author

Xueke Li, Mann, Michael E., Wehner, Michael F., Rahmstor, Stefan, Petri, Stefan, Christiansen, Shannon, and Carrillo, Judit

Subjects
*ROSSBY waves, *EXTREME weather, *ATMOSPHERIC circulation, *SOIL moisture, *WAVE amplification
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. [ABSTRACT FROM AUTHOR]

Published
2024
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