Calibration of the METEOSAT-VIS-channel by airborne measurements

Kriebel, K.T.

doi:10.1364/ao.20.000011

Cited by 25 publications

(10 citation statements)

References 1 publication

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“…Added to the lack of prelaunch calibration for some of the satellites, this prevents an accurate calibration of the digital outputs of the radiometers into accurate radiance measurements. The European Space Agency and Eumetsat performed from time to time perfectly calibrated airborne measurements (Kriebel 1981;Kriebel and Amann 1993;Kriebel et al 1996), which permit the computation of accurate calibration coefficients for a limited period. The calibration coefficients of the visible channels are not dynamically adjusted within the Meteorological Products Extraction Facility (Eumetsat 1996).…”

Section: The Earth Viewing Calibration Approachmentioning

confidence: 99%

“…They are based on the resolution of the equation of radiative transfer that requires knowledge of atmospheric and surface parameters (Brisson et al 1990;Cabot et al 1994;Govaerts et al 1998;Köpke 1982Köpke , 1983Moulin et al 1996;Moulin, Schneider 1999). Another technique consists in comparing the counts from a radiometer with data from a similar calibrated radiometer carried by an aircraft or a satellite (Kriebel 1981;Kriebel, Amann 1993;Kriebel et al 1996). This kind of calibration does not take into account the drift of the various Meteosat sensors over a long period, or their differences in spectral responses.…”

Section: The Earth Viewing Calibration Approachmentioning

confidence: 99%

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The Operational Calibration of Images Taken in the Visible Channel of the Meteosat Series of Satellites

Rigollier¹,

Lefèvre²,

Blanc³

et al. 2002

J. Atmos. Oceanic Technol.

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Section: The Earth Viewing Calibration Approachmentioning

confidence: 99%

Section: The Earth Viewing Calibration Approachmentioning

confidence: 99%

The Operational Calibration of Images Taken in the Visible Channel of the Meteosat Series of Satellites

Rigollier¹,

Lefèvre²,

Blanc³

et al. 2002

J. Atmos. Oceanic Technol.

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“…For the Meteosat image, the vicarious calibration by Kriebel and Amann (1989) of the Meteosat-4 VIS-channel was used (previous calibrations can be found in Kriebel 1981 andKoepke 1982). The calibration factor was chosen among a set which were presented for different surface types; specifically the one corresponding to land surface in La Mancha, Spain (1·16Wm-2sr-'counC ').…”

Section: Application Satellite Imagesmentioning

confidence: 99%

Narrow-band to broad-band conversion for Meteosat-visiible channel and broad-band albedo using both AVHRR-1 and -2 channels

Valiente

Núñez

López-Baeza

et al. 1995

International Journal of Remote Sensing

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Satellite-derived broad-band albedo otTers a useful tool for monitoring surface conditions. Given the limited wavelength window of most satellite radiometers, satellite albedo studies need to define narrow-band to a broad-band transformations. Signals from the AVHRR channels on board the NOAA-II satellite, the Meteosat visible channel and a rectangular spectral band from O' 3 to 2·5I'm were simulated for a set of 20 representative land surfaces. The radiative transfer code described in Tanre et al. (1990) was used to obtain top of the atmosphere radiances. The derived signals were then correlated to predict broadband albedo and the Mcteosat response via the two AVHRR signals. The results indicated that the use of the two AVHRR bands makes the narrow-band to broad-band conversion independent of the surface type. Finally, the regression was applied to two concurrent AVH RR and Meteosat images so as to compare a broad-band AVHRR-derived top of the atmosphere (TOA) albedo for the Meteosat-band with a corresponding TOA albedo from Meteosat data. The results of the comparison illustrated the anisotropic character of surface reflection.

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“…For a time in the 1980s and early 1990s, beginning with NOAA-7 and continuing through NOAA-11, NASA and NOAA cooperated to conduct ER-2 aircraft underflights of the polar-orbiting satellites with laboratory-calibrated spectrometers (Hovis et al 1985). Kriebel (1981) performed a similar calibration for the early Meteosat imagers. When the International Satellite Cloud Climatology Project (ISCCP) began in 1982, the primary goal was to quantify the main radiative properties of clouds and their diurnal, synoptic, seasonal, and interannual variability.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Long-Term Calibrations of the AVHRR Visible Radiances

Rossow

Ferrier

2015

Journal of Atmospheric and Oceanic Technology

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Two systematic calibrations have been compiled for the visible radiances measured by the series of AVHRR instruments flown on the NOAA operational polar weather satellites: one by the International Satellite Cloud Climatology Project (ISCCP), anchored on NASA ER-2 underflights in the 1980s and early 1990s and covering the period 1981-2009, and one by the PATMOS-x project, anchored on comparisons to the MODIS instruments on the Aqua and Terra satellites in the 2000s and covering the period 1979-2010 (this result also includes calibration for the near-IR channels). Both methods have had to extend their anchor calibrations over a long series of instruments using different vicarious approaches, so a comparison provides an opportunity to evaluate how well this extension works by cross-checking the results at the anchor points. The basic result of this comparison is that for the ''afternoon'' series of AVHRRs, the calibrations agree to within their mutual uncertainties. However, this retrospective evaluation also shows that the representation of the time variations can be simplified. The ISCCP procedure had much more difficulty extending the calibration to the ''morning'' series of AVHRRs with the calibrations for NOAA-15 and NOAA-17 exceeding the estimated uncertainties. Given the general agreement, a new calibration for all AVHRR visible radiances (except TIROS-N, NOAA-6, NOAA-19, and MetOp-A) is proposed that is based on the average of the best linear fits to the two time records. The estimated uncertainty of these calibrations is 63% absolute (scaled radiance units).

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Calibration of the METEOSAT-VIS-channel by airborne measurements

Cited by 25 publications

References 1 publication

The Operational Calibration of Images Taken in the Visible Channel of the Meteosat Series of Satellites

The Operational Calibration of Images Taken in the Visible Channel of the Meteosat Series of Satellites

Narrow-band to broad-band conversion for Meteosat-visiible channel and broad-band albedo using both AVHRR-1 and -2 channels

Evaluation of Long-Term Calibrations of the AVHRR Visible Radiances

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