Paper Info
Title
Demonstrating the error budget for the Climate Absolute Radiance and Refractivity Observatory through solar irradiance measurements
Abstract
The Climate Absolute Radiance and Refractivity Observatory (CLARREO) mission addresses the need to observe high-accuracy, long-term climate change trends and to use decadal change observations as a method to determine the accuracy of climate change. A CLARREO objective is to improve the accuracy of SI-traceable, absolute calibration at infrared and reflected solar wavelengths to reach on-orbit accuracies required to allow climate change observations to survive data gaps and observe climate change at the limit of natural variability. Such an effort will also demonstrate National Institute of Standards and Technology (NIST) approaches for use in future spaceborne instruments. The current work describes the results of laboratory and field measurements with the Solar, Lunar for Absolute Reflectance Imaging Spectroradiometer (SOLARIS) which is the calibration demonstration system (CDS) for the reflected solar portion of CLARREO. SOLARIS allows testing and evaluation of calibration approaches, alternate design and/or implementation approaches and components for the CLARREO mission. SOLARIS also provides a test-bed for detector technologies, non-linearity determination and uncertainties, and application of future technology developments and suggested spacecraft instrument design modifications. Results of laboratory calibration measurements are provided to demonstrate key assumptions about instrument behavior that are needed to achieve CLARREO's climate measurement requirements. Absolute radiometric response is determined using laser-based calibration sources and applied to direct solar views for comparison with accepted solar irradiance models to demonstrate accuracy values giving confidence in the error budget for the CLARREO reflectance retrieval.
Year
DOI
Venue
2015
10.1117/12.2188849
Proceedings of SPIE
Keywords
Field
DocType
CLARREO,preflight calibration,radiometric calibration,SI-traceable
Meteorology,CLARREO,Radiometric calibration,Climate change,Remote sensing,Optics,Irradiance,Spectroradiometer,Solar irradiance,Radiance,Calibration,Physics
Conference
Volume
ISSN
Citations 
9607
0277-786X
0
PageRank 
References 
Authors
0.34
0
3
Name
Order
Citations
PageRank
Kurtis J. Thome1264107.87
Joel McCorkel2157.86
brendan mcandrew300.68