This title appears in the Scientific Report :
2014
Please use the identifier:
http://hdl.handle.net/2128/8184 in citations.
Please use the identifier: http://dx.doi.org/10.5194/amtd-7-12649-2014 in citations.
New calibration noise suppression techniques for the GLORIA limb imager
New calibration noise suppression techniques for the GLORIA limb imager
The Gimballed Limb Observer for Radiance Imaging of the Atmosphere (GLORIA) presents new opportunities for the retrieval of trace gases in the upper troposphere and lower stratosphere. The radiometric calibration of the measured signal is achieved using in-flight measurements of reference blackbody...
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Personal Name(s): | Guggenmoser, T. (Corresponding Author) |
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Blank, J. / Kleinert, A. / Latzko, T. / Ungermann, J. / Friedl-Vallon, F. / Höpfner, M. / Kaufmann, M. / Kretschmer, E. / Maucher, G. / Neubert, T. / Oelhaf, H. / Preusse, P. / Riese, M. / Rongen, H. / K. Sha, M. / Sumińska-Ebersoldt, O. / Tan, V. | |
Contributing Institute: |
Stratosphäre; IEK-7 |
Published in: | Atmospheric measurement techniques discussions, 7 (2014) 12, S. 12649 - 12689 |
Imprint: |
Katlenburg-Lindau
Copernicus
2014
|
DOI: |
10.5194/amtd-7-12649-2014 |
Document Type: |
Journal Article |
Research Program: |
Composition and Dynamics of the Upper Troposphere and Stratosphere |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.5194/amtd-7-12649-2014 in citations.
The Gimballed Limb Observer for Radiance Imaging of the Atmosphere (GLORIA) presents new opportunities for the retrieval of trace gases in the upper troposphere and lower stratosphere. The radiometric calibration of the measured signal is achieved using in-flight measurements of reference blackbody and upward-pointing "deep space" scenes. In this paper, we present techniques developed specifically to calibrate GLORIA data exploiting the instrument's imaging capability. The algorithms discussed here make use of the spatial correlation of parameters across GLORIA's detector pixels in order to mitigate the noise levels and artefacts in the calibration measurements. This is achieved by combining a priori and empirical knowledge about the instrument background radiation with noise-mitigating compression methods, specifically low-pass filtering and principal component analysis. In addition, a new software package for the processing of GLORIA data is introduced which allows us to generate calibrated spectra from raw measurements in a semi-automated data processing chain. |