TY  - JOUR
AU  - Guggenmoser, T.
AU  - Blank, J.
AU  - Kleinert, A.
AU  - Latzko, T.
AU  - Ungermann, J.
AU  - Friedl-Vallon, F.
AU  - Höpfner, M.
AU  - Kaufmann, M.
AU  - Kretschmer, E.
AU  - Maucher, G.
AU  - Neubert, T.
AU  - Oelhaf, H.
AU  - Preusse, P.
AU  - Riese, M.
AU  - Rongen, H.
AU  - K. Sha, M.
AU  - Sumińska-Ebersoldt, O.
AU  - Tan, V.
TI  - New calibration noise suppression techniques for the GLORIA limb imager
JO  - Atmospheric measurement techniques discussions
VL  - 7
IS  - 12
SN  - 1867-8610
CY  - Katlenburg-Lindau
PB  - Copernicus
M1  - FZJ-2014-07027
SP  - 12649 - 12689
PY  - 2014
AB  - 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.
LB  - PUB:(DE-HGF)16
DO  - DOI:10.5194/amtd-7-12649-2014
UR  - https://juser.fz-juelich.de/record/185601
ER  -