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Assessment of the Aeolus performance and bias correction - results from the Aeolus DISC

Reitebuch, Oliver and Krisch, Isabell and Lemmerz, Christian and Lux, Oliver and Marksteiner, Uwe and Masoumzadeh, Nafiseh and Weiler, Fabian and Witschas, Benjamin and Bracci, Fabio and Meringer, Markus and Schmidt, Karsten and Huber, Dorit and Nikolaus, Ines and Fabre, Frederic and Vaughan, Michael and Reisig, Katja and Dabas, Alain and Flament, Thomas and Lacour, Adrien and Mahfouf, Jean-Francois and Trapon, Dimitri and Savli, Matic and Abdalla, Saleh and Isaksen, Lars and Rennie, Michael and Donovan, Dave and de Kloe, Jos and Marseille, Gert-Jan and Stoffelen, Ad and Perron, Gaetan and Jupin-Ganglois, Sebastian and Smeets, Joost and Veneziani, Marcella and Bucci, Simone and Gostinicchi, Giacomo and Ehlers, Frithjof and Kanitz, Thomas and Straume, Anne-Grete and Wernham, Denny and von Bismarck, Jonas and Bley, Sebastian and Fischer, Peggy and De Laurentis, Marta and Parinello, Tommaso (2020) Assessment of the Aeolus performance and bias correction - results from the Aeolus DISC. Aeolus Cal/Val and Science Workshop, 02.-06. Nov. 2020, Darmstadt, Germany / Online.

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Abstract

Already within the first weeks after the launch of ESA's Earth Explorer mission Aeolus on 22 August 2018, the spaceborne wind lidar ALADIN (Atmospheric LAser Doppler INstrument) provided atmospheric backscatter measurements on 5 September and wind profiles on 12 September 2018. This swift availability of observations from ALADIN after launch is considered as a great success for ESA, space industry and algorithm and processor developer teams. These teams from scientific institutes, numerical weather prediction (NWP) centres, companies and ESA continuously improved and tested the retrieval algorithms and processors using sophisticated end-to-end simulation tools and experience gained with the airborne demonstrator for Aeolus for more than 15 years before launch. This cooperation from the pre-launch phase of Aeolus was extended within a new framework for exploitation activities of Earth Explorer missions named Data Innovation and Science Cluster (DISC) starting in January 2019. The Aeolus DISC activities range from instrument monitoring including calibration to algorithm refinement resulting in updates of the complete processor chain for all product levels every 6 months. DISC teams perform continuous monitoring of the product quality and provide regular reports in supports of external validation teams and ESA. Finally, wind product monitoring and impact experiments with NWP models are building an essential activity within the Aeolus DISC in order to achieve the objective of the Aeolus mission. In order to cover the broad range of activities, a multi-disciplinary team of experts, institutes and companies was established for the Aeolus DISC coordinated by DLR with ECMWF, KNMI, CNRS/Météo-France, DoRIT, ABB, S&T and Serco. During the presentation the Aeolus instrument performance for wind products, the discovered causes of the systematic errors and their correction will be discussed. Main achievements in this area are related to the characterization and correction of enhanced dark signal levels for single "hot" pixels in June 2019, the identification of the harmonic error contribution caused by the varying telescope primary mirror temperature variation in September- October 2019, the error in the on-board computation of the satellite induced Doppler frequency shift, and finally the observed temporal drift of a constant bias caused by drifts in the internal reference path. An outlook to the implementation of these corrections for real-time and reprocessed data products will be given.

Item URL in elib:https://elib.dlr.de/138648/
Document Type:Conference or Workshop Item (Speech)
Title:Assessment of the Aeolus performance and bias correction - results from the Aeolus DISC
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Reitebuch, OliverDLR, IPAhttps://orcid.org/0000-0002-8503-0094
Krisch, IsabellDLR, IPAUNSPECIFIED
Lemmerz, ChristianDLR, IPAUNSPECIFIED
Lux, OliverDLR, IPAhttps://orcid.org/0000-0003-1491-0323
Marksteiner, UweDLR, IPAhttps://orcid.org/0000-0002-4335-922X
Masoumzadeh, NafisehDLR, IPAUNSPECIFIED
Weiler, FabianDLR, IPAUNSPECIFIED
Witschas, BenjaminDLR, IPAhttps://orcid.org/0000-0001-7993-1470
Bracci, FabioFabio.Bracci (at) dlr.deUNSPECIFIED
Meringer, MarkusMarkus.Meringer (at) dlr.dehttps://orcid.org/0000-0001-8526-2429
Schmidt, KarstenKarsten.Schmidt (at) dlr.dehttps://orcid.org/0000-0002-3335-6076
Huber, Doritadm-dh (at) gmx.deUNSPECIFIED
Nikolaus, InesHochschule für angewandte Wissenschaften MünchenUNSPECIFIED
Fabre, FredericLes Myriades, FranceUNSPECIFIED
Vaughan, MichaelOLA, Buckimhamshire, UKUNSPECIFIED
Reisig, KatjaIB Reissig, GermanyUNSPECIFIED
Dabas, AlainMétéo-France CNRM, Toulouse, FUNSPECIFIED
Flament, ThomasCNRM/Meteo-France, Toulouse, FUNSPECIFIED
Lacour, AdrienCNRM/Meteo-France, Toulouse, FUNSPECIFIED
Mahfouf, Jean-FrancoisMeteo-FranceUNSPECIFIED
Trapon, DimitriCNRM/Meteo-France, Toulouse, FUNSPECIFIED
Savli, MaticCNRM/Meteo-France, Toulouse, FUNSPECIFIED
Abdalla, SalehECMWF, Reading, UKUNSPECIFIED
Isaksen, LarsECMWF, Reading, UKUNSPECIFIED
Rennie, MichaelECMWF, Reading, UKUNSPECIFIED
Donovan, DaveKNMIUNSPECIFIED
de Kloe, JosKNMI, De Bilt, NLUNSPECIFIED
Marseille, Gert-JanKNMI, De Bilt, NLUNSPECIFIED
Stoffelen, AdKNMI, De Bilt, NLUNSPECIFIED
Perron, GaetanABB Bomem Inc.UNSPECIFIED
Jupin-Ganglois, SebastianABB Bomem Inc.UNSPECIFIED
Smeets, JoostS&T, DelftUNSPECIFIED
Veneziani, MarcellaS&T, DelftUNSPECIFIED
Bucci, SimoneSerco, ItalyUNSPECIFIED
Gostinicchi, GiacomoSerco, ItalyUNSPECIFIED
Ehlers, FrithjofFrithjof.Ehlers (at) esa.intUNSPECIFIED
Kanitz, ThomasESA/ESTEC, Noordwijk, NLUNSPECIFIED
Straume, Anne-GreteESA/ESTEC, Noordwijk, NLUNSPECIFIED
Wernham, DennyESA/ESTEC, Noordwijk, NLUNSPECIFIED
von Bismarck, JonasESA/ESRIN, Frascati, ITUNSPECIFIED
Bley, SebastianESA/ESRIN, Frascati, ITUNSPECIFIED
Fischer, PeggyESA/ESRIN, Frascati, ITUNSPECIFIED
De Laurentis, MartaESA-ESRIN, Frascati, ItalyUNSPECIFIED
Parinello, TommasoESA/ESRIN, Frascati, ITUNSPECIFIED
Date:2 November 2020
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Aeolus, Earth Explorer mission, Doppler wind lidar
Event Title:Aeolus Cal/Val and Science Workshop
Event Location:Darmstadt, Germany / Online
Event Type:Workshop
Event Dates:02.-06. Nov. 2020
Organizer:ESA
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 - Projekt ADM (old)
Location: Neustrelitz , Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Lidar
Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Meringer, Dr.rer.nat. Markus
Deposited On:30 Nov 2020 12:02
Last Modified:15 Dec 2020 11:27

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