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| Titel |
Radiometric calibration of the in-flight blackbody calibration system of the GLORIA interferometer |
| VerfasserIn |
C. Monte, B. Gutschwager, A. Adibekyan, M. Kehrt, A. Ebersoldt, F. Olschewski, J. Hollandt |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 7, no. 1 ; Nr. 7, no. 1 (2014-01-06), S.13-27 |
| Datensatznummer |
250115554
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| Publikation (Nr.) |
 copernicus.org/amt-7-13-2014.pdf |
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| Zusammenfassung |
| GLORIA (Gimballed Limb Observer for Radiance Imaging of the
Atmosphere) is an airborne, imaging, infrared Fourier transform
spectrometer that applies the limb-imaging technique to perform
trace gas and temperature measurements in the Earth's atmosphere
with three-dimensional resolution. To ensure the traceability of these
measurements to the International Temperature Scale and thereby to
an absolute radiance scale, GLORIA carries an on-board calibration
system. Basically, it consists of two identical large-area and high-emissivity infrared radiators, which can be continuously and
independently operated at two adjustable temperatures in a range
from −50 °C to 0 °C during flight. Here we describe the radiometric
and thermometric characterization and calibration of the in-flight
calibration system at the Reduced Background Calibration Facility of
the Physikalisch-Technische Bundesanstalt. This was performed with a standard
uncertainty of less than 110 mK. Extensive investigations of the
system concerning its absolute radiation temperature and spectral
radiance, its temperature homogeneity and its short- and long-term
stability are discussed. The traceability chain of these
measurements is presented. |
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