Radiometric calibration of the in-flight blackbody calibration system of the GLORIA interferometer

Monte, C.; Gutschwager, B.; Adibekyan, Albert; Kehrt, M.; Ebersoldt, A.; Olschewski, F.; Hollandt, J.

doi:10.5194/amt-7-13-2014

Cited by 14 publications

(8 citation statements)

References 17 publications

(16 reference statements)

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“…The blackbodies are cavities with aluminium pyramids on the baseplate. The emissivity of the blackbodies is required to be better than 0.997 and the temperature uncertainty to be better than 0.1 K in order to reach the radiometric calibration uncertainty target of 1 % (Monte et al, 2014). In addition, the gimballed frame allows us to direct the centre of the FOV to 10 • upwards at the 90 • position of the yaw gimbal.…”

Section: Calibrationmentioning

confidence: 99%

Instrument concept of the imaging Fourier transform spectrometer GLORIA

et al. 2014

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Abstract. The Gimballed Limb Observer for Radiance Imaging of the Atmosphere (GLORIA) is an imaging limb emission sounder operating in the thermal infrared region. It is designed to provide measurements of the upper troposphere/lower stratosphere with high spatial and high spectral resolution. The instrument consists of an imaging Fourier transform spectrometer integrated into a gimbal. The assembly can be mounted in the belly pod of the German High Altitude and Long Range research aircraft (HALO) and in instrument bays of the Russian M55 Geophysica. Measurements are made in two distinct modes: the chemistry mode emphasises chemical analysis with high spectral resolution, and the dynamics mode focuses on dynamical processes of the atmosphere with very high spatial resolution. In addition, the instrument allows tomographic analyses of air volumes. The first measurement campaigns have shown compliance with key performance and operational requirements.

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Section: Calibrationmentioning

confidence: 99%

Instrument concept of the imaging Fourier transform spectrometer GLORIA

et al. 2014

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“…6 is a zoom in the spectral range of 830 to 900 cm −1 . The spectra are apodised with the Norton-Beer strong function (Norton and Beer, 1976). towards Antarctica.…”

Section: Data Processingmentioning

confidence: 96%

Instrument concept of the imaging Fourier transform spectrometer GLORIA

Friedl-Vallon¹,

Gulde²,

Hase³

et al. 2014

Preprint

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Abstract. The Gimballed Limb Observer for Radiance Imaging of the Atmosphere (GLORIA) is an imaging limb emission sounder operating in the thermal infrared region. It is designed to provide measurements of the Upper Troposphere/Lower Stratosphere with high spatial and high spectral resolution. The instrument consists of an imaging Fourier transform spectrometer integrated in a gimbal. The assembly can be mounted in the belly pod of the German high altitude and long range research aircraft HALO and in instrument bays of the Russian M55 Geophysica. Measurements are made predominantly in two distinct modes: the chemistry mode emphasises chemical analysis with high spectral resolution, the dynamics mode focuses on dynamical processes of the atmosphere with very high spatial resolution. In addition the instrument allows tomographic analyses of air volumes. The first measurement campaigns have shown compliance with key performance and operational requirements.

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“…A rigid and thorough calibration procedure has been established to characterize and calibrate the blackbodies traceable to the national standards of temperature and the international temperature scale ITS-90. The surface radiation temperature is directly measured and compared to blackbody radiation from high-quality cavity radiators linked to the primary standards of temperature radiation (Monte et al, 2014). Additionally, the blackbodies are spectrally characterized.…”

Section: Blackbody Characterizationmentioning

confidence: 99%

Characterization of blackbody inhomogeneity and its effect on the retrieval results of the GLORIA instrument

Kleinert

Krisch²,

Ungermann³

et al. 2018

Atmos. Meas. Tech.

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Abstract. Limb sounding instruments play an important role in the monitoring of climate trends, as they provide a good vertical resolution. Traceability to the International System of Units (SI) via onboard reference or transfer standards is needed to compare trend estimates from multiple instruments. This study investigates the required uncertainty of these radiation standards to properly resolve decadal trends of climate-relevant trace species like ozone, water vapor, and temperature distribution for the Gimballed Limb Observer for Radiance Imaging of the Atmosphere (GLORIA). Temperature nonuniformities of the onboard reference blackbodies, used for radiometric calibration, have an impact on the calibration uncertainty. The propagation of these nonuniformities through the retrieval is analyzed. A threshold for the maximum tolerable uncertainty of the blackbody temperature is derived, so that climate trends can be significantly identified with GLORIA.

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Radiometric calibration of the in-flight blackbody calibration system of the GLORIA interferometer

Cited by 14 publications

References 17 publications

Instrument concept of the imaging Fourier transform spectrometer GLORIA

Instrument concept of the imaging Fourier transform spectrometer GLORIA

Instrument concept of the imaging Fourier transform spectrometer GLORIA

Characterization of blackbody inhomogeneity and its effect on the retrieval results of the GLORIA instrument

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