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  Dynamics and cloud properties of Arctic cyclones as simulated with the new limited-area configuration of the DYNAMICO-LMDZ model

Raillard, L., Vignon, É., Rivière, G., Madeleine, J.-B., Meurdesoif, Y., Caubel, A., Wimmer, M., Fromang, S., Delanoë, J., Jourdan, O. (2023): Dynamics and cloud properties of Arctic cyclones as simulated with the new limited-area configuration of the DYNAMICO-LMDZ model, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-2947

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018925 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018925_2
Genre: Conference Paper

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 Creators:
Raillard, Lea1, Author
Vignon, Étienne1, Author
Rivière, Gwendal1, Author
Madeleine, Jean-Baptiste1, Author
Meurdesoif, Yann1, Author
Caubel, Arnaud1, Author
Wimmer, Meryl1, Author
Fromang, Sébastien1, Author
Delanoë, Julien1, Author
Jourdan, Olivier1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: Extra-tropical cyclones transiting into the Arctic are of great importance for the heat and moisture budgets of the polar atmosphere and strongly modulate the sea ice variability. Arctic cyclones are also systems that lead to the formation of clouds, and in particular mixed-phase clouds, whose amount of supercooled liquid water strongly determine the radiative effect thereof. Correctly representing those clouds in atmospheric models is crucial to properly simulate precipitations and the surface energy budget in a region warming twice as fast as the rest of the globe. In August 2022, the Rali-Thinice campaign took place in Svalbard and aimed to characterize the dynamical and microphysical structure of Arctic cyclones. A research aircraft equipped with measurement systems such as two radars, a lidar and microphysical probes flew over the Arctic Ocean sampling several cases of summer cyclones. The data acquired during this campaign are extremely valuable to carry out an in-depth evaluation of the ability of atmospheric models to simulate Arctic cyclones and their associated clouds. LMDZ is the global atmospheric component of the IPSL-CM Earth System Model, actively and historically involved in the CMIP exercises. The new DYNAMICO-LMDZ configuration which consists of the physics of LMDZ coupled to the recent icosahedral dynamical core DYNAMICO is run in a new regional configuration on a domain surrounding the Svalbard archipelago. The representation of the dynamics and thermodynamics of cyclones as well as cloud properties is assessed using the set of measurements acquired during Rali-Thinice campaign complemented with surface station data and radiosondes.

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Language(s): eng - English
 Dates: 2023
 Publication Status: Finally published
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 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-2947
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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: -