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Derivation of wind fields from stratospheric trace gas observations

Baier, Frank and Elbern, Hendrik (2015) Derivation of wind fields from stratospheric trace gas observations. S-RIP 2015 Workshop (and the SPARC DA Workshop), 12.-16. Okt. 2015, Paris, Frankreich.

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Abstract

Within the ARISE project (Atmospheric dynamics Research InfraStructure in Europe), an inversion method for chemical tracers was developed based on the adjoint version of the SACADA-CTM (Synoptic Analysis of Chemical constituents by Advanced Data Assimilation - Chemical Transport Model). The method derives initial wind fields based on stratospheric trace gas observations. It is hoped that results can help to improve weather forecasting via chemical data assimilation. The SACADA-CTM is coupled to the German Weather Service GME global forecast system. SACADA-GME consists of a state-of-the-art chemical assimilation system covering stratospheric chemistry and dynamics. Using the adjoint of the tracer advection scheme with respect to observation-model increments (e.g., from satellite data) new initial wind fields can be derived. We investigate the system performance via twin experiments. With respect to real-world applications, we present results based on 6h inversions using realistic initial winds and MIPAS trace gas observations of O3, H2O, CH4 and N2O covering March 2003. The impact of trace gas selection and meteo conditions on results are discussed. Analyzed winds are evaluated by comparisons to independent data (e.g. LIDAR observations).

Item URL in elib:https://elib.dlr.de/102415/
Document Type:Conference or Workshop Item (Speech)
Title:Derivation of wind fields from stratospheric trace gas observations
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Baier, FrankFrank.Baier (at) dlr.deUNSPECIFIED
Elbern, HendrikEnvironmental Research at the University of CologneUNSPECIFIED
Date:15 October 2015
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:stratosphere, trace gases, wind fields, satellite observations, profile measurements, data assimilation
Event Title:S-RIP 2015 Workshop (and the SPARC DA Workshop)
Event Location:Paris, Frankreich
Event Type:Workshop
Event Dates:12.-16. Okt. 2015
Organizer:Université Pierre et Marie Curie
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Datenprodukte für Klima- und Atmosphärenanwendungen (old)
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center > Atmosphere
Deposited By: Baier, Dr.rer.nat. Frank
Deposited On:29 Jan 2016 11:16
Last Modified:10 May 2016 23:43

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