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Optimizing irradiance estimates for coastal and inland water imaging spectroscopy
Author(s) -
Thompson David R.,
Seidel Felix C.,
Gao Bo Cai,
Gierach Michelle M.,
Green Robert O.,
Kudela Raphael M.,
Mouroulis Pantazis
Publication year - 2015
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1002/2015gl063287
Subject(s) - irradiance , imaging spectrometer , remote sensing , spectrometer , environmental science , solar irradiance , imaging spectroscopy , prism , spectral imaging , near infrared spectroscopy , optics , geology , hyperspectral imaging , atmospheric sciences , physics
Next generation orbital imaging spectrometers, with advanced global remote sensing capabilities, propose to address outstanding ocean science questions related to coastal and inland water environments. These missions require highly accurate characterization of solar irradiance in the critical 380–600 nm spectral range. However, the irradiance in this spectral region is temporally variable and difficult to measure directly, leading to considerable variance between different models. Here we optimize an irradiance estimate using data from the NASA airborne Portable Remote Imaging Spectrometer (PRISM), leveraging spectrally smooth in‐scene targets. We demonstrate improved retrievals for both PRISM and the Next Generation Airborne Visible Infrared Imaging Spectrometer.