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Airborne Wind Lidar Observations for the Calibration and Validation of ESA's Wind Mission Aeolus

Lux, Oliver and Lemmerz, Christian and Weiler, Fabian and Marksteiner, Uwe and Geiß, Alexander and Witschas, Benjamin and Rahm, Stephan and Schäfler, Andreas and Reitebuch, Oliver (2019) Airborne Wind Lidar Observations for the Calibration and Validation of ESA's Wind Mission Aeolus. 2019 Dragon 4 Symposium, 24.-28. Jun. 2019, Ljubljana, Slowenien.

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Abstract

Since the successful launch of ESA's Earth Explorer mission Aeolus in August 2018, atmospheric wind profiles from the ground to the lower stratosphere are being acquired on a global scale deploying the first-ever satellite-borne wind lidar system ALADIN (Atmospheric LAser Doppler INstrument). ALADIN provides one component of the wind vector along the instrument's line-of-sight (LOS) with a vertical resolution of 0.25 km to 2 km depending on altitude, while the precision in wind speed is between 2 m/s to 4 m/s. The near-real-time wind observations contribute to improving the accuracy of numerical weather prediction and advance the understanding of tropical dynamics and processes relevant to climate variability. Already several years before the satellite launch, an airborne prototype of the Aeolus payload, the ALADIN Airborne Demonstrator (A2D), was developed at DLR (German Aerospace Center). Due to its representative design and operating principle, the A2D has since delivered valuable information on the wind measurement strategies of the satellite instrument as well as on the optimization of the wind retrieval and related quality-control algorithms. Broad vertical and horizontal coverage across the troposphere is achieved thanks to the complementary design of the A2D receiver, which, like ALADIN, comprises a Rayleigh and Mie channel for analysing both molecular and particulate backscatter signals. In addition to the A2D, DLR's research aircraft carries a well-established coherent Doppler wind lidar (2-µm DWL) which allows determining the wind vector with accuracy of better than 0.1 m/s and precision of better than 1 m/s. Hence, both instruments represent key instruments for the calibration and validation activities during the Aeolus mission.

Item URL in elib:https://elib.dlr.de/131167/
Document Type:Conference or Workshop Item (Poster)
Title:Airborne Wind Lidar Observations for the Calibration and Validation of ESA's Wind Mission Aeolus
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lux, OliverDLR, IPAhttps://orcid.org/0000-0003-1491-0323
Lemmerz, ChristianDLR, IPAUNSPECIFIED
Weiler, FabianDLR, IPAUNSPECIFIED
Marksteiner, UweDLR, IPAhttps://orcid.org/0000-0002-4335-922X
Geiß, AlexanderDLR, IPAUNSPECIFIED
Witschas, BenjaminDLR, IPAhttps://orcid.org/0000-0001-7993-1470
Rahm, StephanDLR, IPAUNSPECIFIED
Schäfler, AndreasDLR, IPAhttps://orcid.org/0000-0002-6165-6623
Reitebuch, OliverDLR, IPAhttps://orcid.org/0000-0002-8503-0094
Date:25 June 2019
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Lidar, satellite validation, Aeolus
Event Title:2019 Dragon 4 Symposium
Event Location:Ljubljana, Slowenien
Event Type:international Conference
Event Dates:24.-28. Jun. 2019
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 - Erdbeobachtung
DLR - Research theme (Project):R - Projekt ADM
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Lidar
Deposited By: Lux, Dr. Oliver
Deposited On:27 Nov 2019 13:30
Last Modified:27 Nov 2019 13:30

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