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Observation of Atomic Oxygen in the Mesosphere and Thermosphere of Earth with the THz Heterodyne Spectrometer GREAT

Richter, Heiko and Buchbender, Christof and Güsten, Rolf and Klein, Bernd and Stutzki, J. and Wiesemeyer, H. and Hübers, Heinz-Wilhelm (2021) Observation of Atomic Oxygen in the Mesosphere and Thermosphere of Earth with the THz Heterodyne Spectrometer GREAT. In: 46th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2021. IRMMW 2021, 2021-08-29 - 2021-09-03, Chengdu, China. doi: 10.1109/IRMMW-THz50926.2021.9566924. ISBN 978-172819424-0. ISSN 2162-2027.

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Abstract

Atomic oxygen governs photochemistry and energy balance of the mesosphere and lower thermosphere of the Earth. Its concentration is extremely difficult to measure with remote sensing techniques since it has only few optically active transitions. Current indirect measurements involve photochemical models and the results are not always in agreement, particularly when obtained with different instruments. In addition, altitudes above 100 km are not covered by these methods. We report on direct measurements of the 4.7-THz fine-structure transition of atomic oxygen at 4.7448 THz using the German Receiver for Astronomy at Terahertz Frequencies on board the Stratospheric Observatory for Infrared Astronomy. Our measurements agree well with atmospheric models and satellite observations below 100 km.

Item URL in elib:https://elib.dlr.de/143728/
Document Type:Conference or Workshop Item (Speech)
Title:Observation of Atomic Oxygen in the Mesosphere and Thermosphere of Earth with the THz Heterodyne Spectrometer GREAT
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Richter, HeikoUNSPECIFIEDhttps://orcid.org/0000-0002-3639-6997UNSPECIFIED
Buchbender, ChristofI. Physikalisches Institut der Universität zu KölnUNSPECIFIEDUNSPECIFIED
Güsten, RolfMax-Planck-Institut für Radioastronomie, Bonn, GermanyUNSPECIFIEDUNSPECIFIED
Klein, BerndMax-Planck-Institut für Radioastronomie, BonnUNSPECIFIEDUNSPECIFIED
Stutzki, J.KOSMA, I.Physikalisches Institut der Universität Köln, Köln, GermanyUNSPECIFIEDUNSPECIFIED
Wiesemeyer, H.Max- Planck-Institut für Radioastronomie, BonnUNSPECIFIEDUNSPECIFIED
Hübers, Heinz-WilhelmUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Date:1 September 2021
Journal or Publication Title:46th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2021
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI:10.1109/IRMMW-THz50926.2021.9566924
ISSN:2162-2027
ISBN:978-172819424-0
Status:Published
Keywords:THz, atomic oxygen, heterodyne, MLT
Event Title:IRMMW 2021
Event Location:Chengdu, China
Event Type:international Conference
Event Start Date:29 August 2021
Event End Date:3 September 2021
Organizer:University of Electronic Science and Technology of China
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 - Terahertz spectrometer for atomic oxygen in the mesosphere/thermosphere
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Optical Sensor Systems > Terahertz and Laser Spectroscopy
Deposited By: Richter, Dr.rer.nat. Heiko
Deposited On:01 Sep 2021 10:41
Last Modified:24 Apr 2024 20:43

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