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A deeper insight into the dynamics of the Hiccup of the fall transition

Matthias, Vivien and Banyś (geb. Wenzel), Daniela and Hansen, Marc (2022) A deeper insight into the dynamics of the Hiccup of the fall transition. STP-15, 21.-25. Feb 2022, Indien. (Unpublished)

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In autumn the prevailing wind in the middle atmosphere at mid and high latitudes changes from summer easterly to winter westerly. This process is not smooth but interrupted by the Hiccup of the fall transition with characteristics similar to a mini sudden stratospheric warming (SSW) occurring in fall even though the zonal wind does not reverse to easterly again. Combining global reanalysis data and satellite observations we improve our knowledge and understanding of the dynamics of the Hiccup of the fall transition in the middle atmosphere. The introduction of a new definition for the onset of the Hiccup focusing now on its core region in the lower mesosphere allows us the automatic detection of a Hiccup in almost every year and thus a deeper insight into its dynamics. For example, we found a latitudinal and altitudinal shift in the zonal wind regime during the Hiccup. Additionally, we investigate its 3D-structure and discuss its possible impact on the D-region.

Item URL in elib:https://elib.dlr.de/185339/
Document Type:Conference or Workshop Item (Speech)
Title:A deeper insight into the dynamics of the Hiccup of the fall transition
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Banyś (geb. Wenzel), DanielaUNSPECIFIEDhttps://orcid.org/0000-0001-6623-6612UNSPECIFIED
Date:24 February 2022
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:fall transition, Hiccup, middle atmosphere, D-region
Event Title:STP-15
Event Location:Indien
Event Type:international Conference
Event Dates:21.-25. Feb 2022
Organizer:Scientific Commitee on Solar-Terrestrial Physics
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Middle Atmosphere
Location: Neustrelitz
Institutes and Institutions:Institute for Solar-Terrestrial Physics
Deposited By: Wendt, Dr. Vivien
Deposited On:21 Apr 2022 21:45
Last Modified:29 Mar 2023 00:50

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