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The new MERLIN mission for atmospheric methane: Quality and Performance monitoring

Hamidouche, Mourad und Lichtenberg, Günter und Aberle, Bernd und Trautmann, Thomas (2017) The new MERLIN mission for atmospheric methane: Quality and Performance monitoring. EUMETSAT 2017 - Meteorological Satellite Conference, 2.-6.Okt. 2017, Rom, Italien.

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Kurzfassung

After water vapor and carbon dioxide, methane is the most abundant greenhouse gas in the Earth's atmosphere. The new generation space borne Lidar mission MERLIN (Methane Remote Sensing Lidar Mission) will make very sensitive measurements of the methane distribution with unprecedented quality, i.e. 50km averaged methane columns with an accuracy of ~ 1%. MERLIN is a joint project of the German Aerospace Center, DLR, and the French National Center for Space Studies (CNES). After its launch in 2021, MERLIN will track down the methane sources and sinks on a global scale. The instrument will be mounted on a satellite platform flying at ~500 km altitude in a Sun synchronous orbit. The instrument will continuously send and receive a pair of pulses at two different wavelengths. One wavelength λon is centered on CH4 (methane) absorption line. The other pulse is a reference at λ off which is slightly shifted by a few tenths of nm. It is located where CH 4 absorption is relatively smaller but yet it is close enough to have a nearly identical interaction with the atmosphere and the reflecting surface. From the back-scattered signals of both pulses (on and off) the DAOD (Differential Absorption Optical Depth) of methane is measured, and thus its column density. We will present our approach and strategy to perform a key ground segment work component that supports MERLIN scientific activities which is the long-term monitoring of the Lidar instrument and its measurements. This function includes tracking the behavior of the instrument and its subsystems over time as well as verification and validation of the scientific data during the entire lifetime of the mission. It mainly monitors the instrument’s performance in response to expected or unexpected natural events or technical situations. These are achieved by analyzing the measurement data and housekeeping information over different time frames. We will additionally show how our expertise in SCIAMACHY can be applied to MERLIN.

elib-URL des Eintrags:https://elib.dlr.de/116465/
Dokumentart:Konferenzbeitrag (Poster)
Titel:The new MERLIN mission for atmospheric methane: Quality and Performance monitoring
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Hamidouche, Mouradmourad.hamidouche (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Lichtenberg, GünterGuenter.Lichtenberg (at) dlr.dehttps://orcid.org/0000-0002-3335-2008NICHT SPEZIFIZIERT
Aberle, BerndBernd.Aberle (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Trautmann, Thomasthomas.trautmann (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:17 März 2017
Referierte Publikation:Nein
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:MERLIN, Methane, Lidar, SCIAMACHY, Remote Sensing, Atmosphere
Veranstaltungstitel:EUMETSAT 2017 - Meteorological Satellite Conference
Veranstaltungsort:Rom, Italien
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:2.-6.Okt. 2017
Veranstalter :EUMETSAT
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erdbeobachtung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):R - Atmosphären- und Klimaforschung, R - Projekt Klimarelevanz von atmosphärischen Spurengasen, Aerosolen und Wolken, R - Fernerkundung u. Geoforschung, R - LIDAR-Forschung und - Entwicklung
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Methodik der Fernerkundung > Atmosphärenprozessoren
Hinterlegt von: Hamidouche, Mourad
Hinterlegt am:14 Dez 2017 10:40
Letzte Änderung:29 Mär 2023 00:35

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