Articles | Volume 17, issue 14
https://doi.org/10.5194/amt-17-4245-2024
https://doi.org/10.5194/amt-17-4245-2024
Research article
 | 
17 Jul 2024
Research article |  | 17 Jul 2024

Unfiltering of the EarthCARE Broadband Radiometer (BBR) observations: the BM-RAD product

Almudena Velázquez Blázquez, Edward Baudrez, Nicolas Clerbaux, and Carlos Domenech

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Cited articles

Anderson, G. P., Clough, S. A., Kneizys, F. X., Chetwynd, J. H., and Shettle, E. P.: AFGL atmospheric constituent profiles (0- 120 km). AFGL-TR; 86-0110, Air Force Geophysics Laboratory, Air Force Systems Command, United States Air Force, Hanscom AFB, Massachusetts, https://ntrl.ntis.gov/NTRL/dashboard/searchResults/titleDetail/ADA175173.xhtml# (last access: 2 July 2024), 1986. 
Baldridge, A., Hook, S., Grove, C., and Rivera, G.: The ASTER Spectral Library Version 2.0, Remote Sens. Environ., 113, 711–715, 2009. a
Barker, H. W., Cole, J. N. S., Villefranque, N. Qu, Z., Velázquez Blázquez, A., Domenech, C., Mason, S., and Hogan, R.: Radiative closure assessment of retrieved cloud and aerosol properties for the EarthCARE mission: The ACMB-DF product, Atmos. Meas. Tech., submitted, 2024. a
Clerbaux, N.: Processing of Geostationary Satellite Observations for Earth Radiation Budget Studies, PhD thesis, Vrije Universiteit Brussel (VUB), https://gerb.oma.be//people/gerb/clerbaux_thesis.pdf (last access: 27 May 2024), 2008. a
Clerbaux, N., Dewitte, S., Bertrand, C.and Caprion, D., De Paepe, B., and Ipe, A.: Unfiltering of the Geostationary Earth Radiation Budget (GERB) Data. Part I: Shortwave Radiation, J. Atmos. Ocean. Tech., 25, 1087–1105, 2008a. a
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Short summary
The Broadband Radiometer measures shortwave and total-wave radiances filtered by the spectral response of the instrument. To obtain unfiltered solar and thermal radiances, the effect of the spectral response needs to be corrected for, done within the BM-RAD processor. Errors in the unfiltering are propagated into fluxes; thus, accurate unfiltering is required for their proper estimation (within BMA-FLX). Unfiltering errors are estimated to be <0.5 % for the shortwave and <0.1 % for the longwave.
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