Top of atmosphere radiance estimates with assessment of data quality

Sylvia Keirse; Eon O'Mongain

doi:10.1117/12.211965

15 June 1995 Top of atmosphere radiance estimates with assessment of data quality

Sylvia Keirse, Eon O'Mongain

Proceedings Volume 2471, Atmospheric Propagation and Remote Sensing IV; (1995) https://doi.org/10.1117/12.211965
Event: SPIE's 1995 Symposium on OE/Aerospace Sensing and Dual Use Photonics, 1995, Orlando, FL, United States

Abstract

The production of top of atmosphere (TOA) radiance estimates, along with an assessment of the quality of these estimates has always been a problem for the vicarious calibration of satellite systems. A new approach using ground based atmospheric data for quality assessment is currently being explored by the Applied Physics group in University College Dublin (UCD), Ireland. Ground based full spectral measurements are used, in conjunction with meteorological data, as inputs to various radiative transfer models. Collectors measure vector and scalar irradiance. direct irradiance (radiance), reflected radiance and sky radiance at particular viewing angles. Solar aureole irradiance is also measured, partly to analyse aerosol scattered radiance at particular viewing angles and partly to act as a component of the model validation effort. A multichannel spectrometer is used to simultaneously monitor these collectors in the visible from 415 nm to 840 nm with a spectral resolution of 5 nm. Redundant collectors are used for comparison with the outputs of the models to validate the models and assess the potential quality of TOA radiance estimates. A technique for extraction of the bidirectional reflectance distribution function is also explored.

Citation Download Citation

Sylvia Keirse and Eon O'Mongain "Top of atmosphere radiance estimates with assessment of data quality", Proc. SPIE 2471, Atmospheric Propagation and Remote Sensing IV, (15 June 1995); https://doi.org/10.1117/12.211965

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