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Influence of radiosonde observations on the sharpness and altitude of the midlatitude tropopause in the ECMWF IFS

Krüger, Konstantin and Schäfler, Andreas and Weissmann, Martin and Craig, George C. (2024) Influence of radiosonde observations on the sharpness and altitude of the midlatitude tropopause in the ECMWF IFS. Weather and Climate Dynamics, pp. 491-509. Copernicus Publications. doi: 10.5194/wcd-5-491-2024. ISSN 2698-4016.

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Official URL: https://wcd.copernicus.org/articles/5/491/2024/

Abstract

Initial conditions of current numerical weather prediction models insufficiently represent the sharp vertical gradients across the midlatitude tropopause. Observation-space data assimilation output is used to study the influence of assimilated radiosondes on the tropopause. The radiosondes reduce systematic biases of the model background and sharpen temperature and wind gradients in the analysis. Tropopause sharpness is still underestimated in the analysis, which may impact weather forecasts.

Item URL in elib:https://elib.dlr.de/203670/
Document Type:Article
Title:Influence of radiosonde observations on the sharpness and altitude of the midlatitude tropopause in the ECMWF IFS
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Krüger, KonstantinDLR, IPAhttps://orcid.org/0000-0003-0778-9756157420724
Schäfler, AndreasDLR, IPAhttps://orcid.org/0000-0002-6165-6623UNSPECIFIED
Weissmann, MartinUniversität Wien, Wien, AustriaUNSPECIFIEDUNSPECIFIED
Craig, George C.MIM, LMU München, DLR, IPAUNSPECIFIEDUNSPECIFIED
Date:5 April 2024
Journal or Publication Title:Weather and Climate Dynamics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:No
In ISI Web of Science:Yes
DOI:10.5194/wcd-5-491-2024
Page Range:pp. 491-509
Publisher:Copernicus Publications
ISSN:2698-4016
Status:Published
Keywords:Observation Impact, Tropopause sharpness, Data assimilation, Observing System Experiment
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 - Atmospheric and climate research, L - Climate, Weather and Environment
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Lidar
Institute of Atmospheric Physics > Applied Meteorology
Deposited By: Krüger, Konstantin
Deposited On:11 Apr 2024 13:34
Last Modified:15 Oct 2024 11:04

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