This title appears in the Scientific Report :
2023
Observation of horizontal temperature variations by a spatial heterodyne interferometer using single-sided interferograms
Observation of horizontal temperature variations by a spatial heterodyne interferometer using single-sided interferograms
Analyses of the mesosphere and lower thermo-sphere suffer from a lack of global measurements. This isproblematic because this region has a complex dynamicstructure, with gravity waves playing an important role. Alimb-sounding spatial heterodyne interferometer (SHI) wasdeveloped to obtain atmospheric...
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Personal Name(s): | Ntokas, Konstantin (Corresponding author) |
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Ungermann, Jörn / Kaufmann, Martin / Neubert, Tom / Riese, Martin | |
Contributing Institute: |
Stratosphäre; IEK-7 |
Imprint: |
2023
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Conference: | SPIE Remote Sensing 2023, Amsterdam (Netherlands), 2023-09-03 - 2023-09-06 |
Document Type: |
Conference Presentation |
Research Program: |
Climate Feedbacks |
Publikationsportal JuSER |
Analyses of the mesosphere and lower thermo-sphere suffer from a lack of global measurements. This isproblematic because this region has a complex dynamicstructure, with gravity waves playing an important role. Alimb-sounding spatial heterodyne interferometer (SHI) wasdeveloped to obtain atmospheric temperature retrieved fromthe O2 A-band emission, which can be used to derive gravitywave parameters in this region. The 2-D spatial distributionof the atmospheric scene is captured by a focal plane array.The SHI superimposes the spectral information onto the hor-izontal axis across the line-of-sight (LOS). In the usual case,the instrument exploits the horizontal axis to obtain spectralinformation and uses the vertical axis to get spatial informa-tion, i.e. temperature observations at the corresponding tan-gent points. This results in a finely resolved 1-D vertical at-mospheric temperature profile. However, this method doesnot make use of the horizontal across-LOS information con-tained in the data.In this paper a new processing method is investigated,which uses single-sided interferograms to gain horizon-tal across-LOS information about the observed temperaturefield. Hereby, the interferogram is split, and each side is mir-rored at the centre of the horizontal axis. Each side can thenbe used to retrieve an individual 1-D temperature profile. Thelocation of the two retrieved temperature profiles is analysedusing prescribed horizontal temperature variations, as it isneeded for deriving wave parameters. We show that it is fea-sible to derive two independent temperature profiles, whichhowever will increase the requirements of an accurate cali-bration and processing. |