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  Unravelling climate impacts of atmospheric internal gravity waves

Šácha, P., Hajkova, D., Prochazkova, Z., Pradas, A. V., Zajicek, R. (2023): Unravelling climate impacts of atmospheric internal gravity waves, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-5021

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021419 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021419_1
Genre: Conference Paper

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 Creators:
Šácha, Petr1, Author
Hajkova, Dominika1, Author
Prochazkova, Zuzana1, Author
Pradas, Anahí Villalba1, Author
Zajicek, Radek1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: Unresolved processes in climate models present a major source of uncertainties in future climate projections. In this talk we will show the first results and introduce a newly founded five year project that aims to re-examine the climate impacts of atmospheric internal gravity waves (GWs) using GW resolving simulations, and to translate this knowledge to the development of modified GW parameterizations in climate models. Within the project, we employ state-of-the-science high-resolution atmospheric datasets and theoretical methods for GW detection and wave-mean flow interaction to revisit and advance our understanding of GW effects on middle atmospheric dynamics, composition and coupling across atmospheric layers. GWs exist on a variety of scales, but typically a significant portion of the GW spectrum remains unresolved in global weather prediction or climate models and the GW impacts need to be parameterized. Our knowledge on GW impacts ranging from regionality of precipitation to the evolution of the ozone layer has been so-far based on their predominantly parameterized effects. Analyzing the resolved GW effects will improve our understanding on the forcing of selected atmospheric phenomena like Sudden Stratospheric Warmings or Brewer-Dobson circulation, but will also put additional constraints on the current GW parameterizations by showing to what extent their effects (and our current understanding) are artificial. This will help us to modify GW parameterization schemes with an ultimate goal of alleviating the uncertainty in future climate projections.

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Language(s): eng - English
 Dates: 2023-07-112023-07-11
 Publication Status: Finally published
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-5021
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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
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Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: -