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Vertical structure of the lower-stratospheric moist bias in the ERA5 reanalysis and its connection to mixing processes

Krüger, Konstantin and Schäfler, Andreas and Wirth, Martin and Weissmann, Martin and Craig, George C. (2022) Vertical structure of the lower-stratospheric moist bias in the ERA5 reanalysis and its connection to mixing processes. Atmospheric Chemistry and Physics Discussions (ACPD). Copernicus Publications. doi: 10.5194/acp-2022-505. ISSN 1680-7367. (Submitted)

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Official URL: https://acp.copernicus.org/preprints/acp-2022-505/

Abstract

A comprehensive data set of airborne lidar water vapor profiles is compared with ERA5 reanalyses for a robust characterization of the vertical structure of the mid-latitude lower-stratospheric moist bias. We confirm a moist bias of up to 55 % at 1.3 km altitude above the tropopause and uncover a decreasing bias beyond. Collocated O3 and H2O observations reveal a particularly strong bias in the mixing layer providing indication for insufficiently modelled transport processes fostering the bias.

Item URL in elib:https://elib.dlr.de/190076/
Document Type:Article
Title:Vertical structure of the lower-stratospheric moist bias in the ERA5 reanalysis and its connection to mixing processes
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Krüger, KonstantinDLR, IPAhttps://orcid.org/0000-0003-0778-9756UNSPECIFIED
Schäfler, AndreasDLR, IPAhttps://orcid.org/0000-0002-6165-6623UNSPECIFIED
Wirth, MartinDLR, IPAhttps://orcid.org/0000-0001-5951-2252UNSPECIFIED
Weissmann, MartinUniversität Wien, AustriaUNSPECIFIEDUNSPECIFIED
Craig, George C.MIM, LMU MünchenUNSPECIFIEDUNSPECIFIED
Date:22 July 2022
Journal or Publication Title:Atmospheric Chemistry and Physics Discussions (ACPD)
Refereed publication:No
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:No
In ISI Web of Science:No
DOI:10.5194/acp-2022-505
Publisher:Copernicus Publications
ISSN:1680-7367
Status:Submitted
Keywords:moist bias, lower stratosphere, ERA5 reanalysis, DIAL water vapor and ozone observations, tracer-tracer space, mixing processes
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Air Transportation and Impact
DLR - Research area:Aeronautics
DLR - Program:L AI - Air Transportation and Impact
DLR - Research theme (Project):L - Climate, Weather and Environment, R - LIDAR research and development
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Lidar
Deposited By: Krüger, Konstantin
Deposited On:14 Nov 2022 12:00
Last Modified:14 Nov 2022 12:00

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