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TOLEOS: Thermosphere Observations from Low-Earth Orbiting Satellites

Siemes, Christian and Borries, Claudia and Bruinsma, Sean and Fernandez-Gomez, Isabel and Hładczuk, Natalia and Kodikara, Timothy and van den IJssel, Jose and Vielberg, Kristin and Visser, Pieter (2022) TOLEOS: Thermosphere Observations from Low-Earth Orbiting Satellites. ESA Living Planet Symposium 2022, 23-27 May 2022, Bonn, Germany. (Unpublished)

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The TOLEOS project will provide new thermosphere density and crosswind observations derived from the accelerometer data of the CHAMP, GRACE, and GRACE-FO missions. The accurate calibration of the accelerometer data and the upgrade of the radiation pressure model are key elements of the project, which is funded by the Swarm Data, Innovation, and Science Cluster (Swarm DISC). To improve the radiation pressure modelling, we use ray tracing techniques in combination with high-fidelity geometry models of the satellites, which were augmented with the thermo-optical properties of the surfaces. This substantially reduces the uncertainty stemming from the satellite geometry modelling and shadowing effects. In addition, we introduce thermal models of the satellites to account for the radiation of heat from the satellites themselves. We will elaborate the accelerometer data calibration and briefly explain the upgraded radiation pressure modelling. Further, we will compare the new thermosphere density and crosswind observations to the existing observations to the highlight the differences and demonstrate the effects of the upgraded processing.

Item URL in elib:https://elib.dlr.de/186680/
Document Type:Conference or Workshop Item (Speech)
Additional Information:The Swarm DISC funds the TOLEOS project through ESA contract No. 4000109587/13/I-NB.
Title:TOLEOS: Thermosphere Observations from Low-Earth Orbiting Satellites
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Siemes, ChristianTU Delfthttps://orcid.org/0000-0001-8316-1130
Borries, Claudiaclaudia.borries (at) dlr.dehttps://orcid.org/0000-0001-9948-3353
Fernandez-Gomez, IsabelIsabel.FernandezGomez (at) dlr.dehttps://orcid.org/0000-0001-7623-9219
Hładczuk, NataliaN.A.Hladczuk (at) tudelft.nlUNSPECIFIED
Kodikara, TimothyTimothy.Kodikara (at) dlr.dehttps://orcid.org/0000-0003-4099-9966
van den IJssel, JoseTU DelftUNSPECIFIED
Vielberg, KristinInstitute of Geodesy and Geoinformation, University of Bonn, Nussallee 17, 53115 Bonn, GermanyUNSPECIFIED
Visser, PieterTU DelftUNSPECIFIED
Date:25 May 2022
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:thermosphere, accelerometer measurements, CHAMP, GRACE, GRACE-FO, Swarm, neutral mass density, crosswind
Event Title:ESA Living Planet Symposium 2022
Event Location:Bonn, Germany
Event Type:international Conference
Event Dates:23-27 May 2022
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 - Solar-Terrestrial Physics SO
Location: Neustrelitz
Institutes and Institutions:Institute for Solar-Terrestrial Physics
Deposited By: Kodikara, Dr Timothy
Deposited On:28 Jun 2022 11:00
Last Modified:28 Jun 2022 11:00

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