NDLI: Pre-launch characterization of the clouds and the Earth'S Radiant Energy System (CERES) flight model 5 (FM5) instrument on NPP

Content Provider	IEEE Xplore Digital Library
Author	Thomas, S. Priestley, K.J. Shankar, M. Smith, N.P. Timcoe, M.G.
Copyright Year	2011
Description	Author affiliation: Science Systems Applications Inc (SSAI), Hampton, Virginia, USA (Thomas, S.; Shankar, M.; Smith, N.P.; Timcoe, M.G.) \|\| Langley Research Center, NASA, Hampton, Virginia, USA (Priestley, K.J.)
Abstract	Clouds and the Earth's Radiant Energy System (CERES) Flight Model 5 (FM5) instrument is designed to continue the long-term monitoring of the Earth's radiation budget. CERES has three sensor units that measure radiation in the 0.3 – 5.0 µm, 0.3 – >100 µm and 8 – 12 µm wavelength regions. Prelaunch characterization of the sensors to determine their radiometric gain and spectral response function was performed in September 2008. The longwave calibrations was achieved using a Narrow Field of view Blackbody (NFBB) that is tied to the International Scale of 1990 (ITS '90). The calibration in the shortwave region is performed using the Shortwave Reference Source (SWRS) along with the Transfer Active Cavity radiometer (TACR). The spectral responsivity of the sensors is measured with narrow band filters for region below 2.5 microns and with a Fourier Transform Spectrometer (FTS) system above the 2.5 micron region. The calibration with CERES on-board sources were also performed during pre-launch testing which will serve as a traceability standard to carry the ground determined radiometric gains to orbit. This paper covers the CERES calibration methodology used in the ground calibration testing of FM5 sensors performed in 2008.
Starting Page	35
Ending Page	38
File Size	300737
Page Count	4
File Format	PDF
ISBN	9781457710032
ISSN	21537003
e-ISBN	9781457710056
DOI	10.1109/IGARSS.2011.6048891
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-07-24
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Calibration Instruments Radiometry Temperature sensors Temperature measurement Extraterrestrial measurements Optical filters Earth Radiation Budget CERES NPP
Content Type	Text
Resource Type	Article

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