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  On the evolution of tropopause layer cooling over tropical cyclone

Chu, K., Jiayue, Y., Zhe-Min, T., Jian-Feng, G., Haoyan, L. (2023): On the evolution of tropopause layer cooling over tropical cyclone, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4733

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021141 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021141_1
Genre: Conference Paper

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 Creators:
Chu, Kekuan1, Author
Jiayue, Yin1, Author
Zhe-Min, Tan1, Author
Jian-Feng, Gu1, Author
Haoyan, Liu1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: Observations and numerical simulations show that there is typically a cold anomaly above the TC warm core. This cooling can work with the warm core to reduce the upper-tropospheric stability and affect the water vapor and momentum transport between the TC and the stratosphere. However, little is known about how the cold anomaly evolves during the life cycle of a TC and how it can be related to changes in TC intensity. This study examines the evolution of the cold anomaly throughout the lifetime of a TC with an idealized TC simulation. The cold anomaly emerges at the TC center before rapid intensification starts and continues to enhance during TC development. It moves radially and forms a cold ring around the TC until the mature stage. The advection, specifically the vertical mean motion, dominates the generation of the TLC, but the advection due to eddy motions is responsible for the cold anomaly near the center. Our findings demonstrate the importance of tropopause layer cooling on TC structure and intensity changes and indicate the necessity of additional observations of this cold anomaly to improve TC predictions.

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Language(s): eng - English
 Dates: 2023-07-112023-07-11
 Publication Status: Finally published
 Pages: -
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 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-4733
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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
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