Evolution of Ocean Color Atmospheric Correction: 1970–2005

Retrieval of water properties from satellite-borne imagers viewing oceans and coastal areas in the visible region of the spectrum requires removing the effect of the atmosphere, which contributes approximately 80–90% of the measured radiance over the open ocean in the blue spectral region. The Gordo...

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Main Author: Howard R. Gordon
Format: Article
Language:English
Published: MDPI AG 2021-12-01
Series:Remote Sensing
Subjects:
Online Access:https://www.mdpi.com/2072-4292/13/24/5051
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author Howard R. Gordon
author_facet Howard R. Gordon
author_sort Howard R. Gordon
collection DOAJ
description Retrieval of water properties from satellite-borne imagers viewing oceans and coastal areas in the visible region of the spectrum requires removing the effect of the atmosphere, which contributes approximately 80–90% of the measured radiance over the open ocean in the blue spectral region. The Gordon and Wang algorithm originally developed for SeaWiFS (and used with other NASA sensors, e.g., MODIS) forms the basis for many atmospheric removal (correction) procedures. It was developed for application to imagery obtained over the open ocean (Case 1 waters), where the aerosol is usually non-absorbing, and is used operationally to process global data from SeaWiFS, MODIS and VIIRS. Here, I trace the evolution of this algorithm from early NASA aircraft experiments through the CZCS, OCTS, SeaWiFs, MERIS, and finally the MODIS sensors. Strategies to extend the algorithm to situations where the aerosol is strongly absorbing are examined. Its application to sensors with additional and unique capabilities is sketched. Problems associated with atmospheric correction in coastal waters are described.
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spelling doaj.art-d5019c8bb75345ed88c42bad7a74e7fb2023-11-23T10:24:08ZengMDPI AGRemote Sensing2072-42922021-12-011324505110.3390/rs13245051Evolution of Ocean Color Atmospheric Correction: 1970–2005Howard R. Gordon0Department of Physics, University of Miami, Coral Gables, FL 33124, USARetrieval of water properties from satellite-borne imagers viewing oceans and coastal areas in the visible region of the spectrum requires removing the effect of the atmosphere, which contributes approximately 80–90% of the measured radiance over the open ocean in the blue spectral region. The Gordon and Wang algorithm originally developed for SeaWiFS (and used with other NASA sensors, e.g., MODIS) forms the basis for many atmospheric removal (correction) procedures. It was developed for application to imagery obtained over the open ocean (Case 1 waters), where the aerosol is usually non-absorbing, and is used operationally to process global data from SeaWiFS, MODIS and VIIRS. Here, I trace the evolution of this algorithm from early NASA aircraft experiments through the CZCS, OCTS, SeaWiFs, MERIS, and finally the MODIS sensors. Strategies to extend the algorithm to situations where the aerosol is strongly absorbing are examined. Its application to sensors with additional and unique capabilities is sketched. Problems associated with atmospheric correction in coastal waters are described.https://www.mdpi.com/2072-4292/13/24/5051atmospheric correctionwater-leaving radianceaerosoldark targetCase 1 watersCase 2 waters
spellingShingle Howard R. Gordon
Evolution of Ocean Color Atmospheric Correction: 1970–2005
Remote Sensing
atmospheric correction
water-leaving radiance
aerosol
dark target
Case 1 waters
Case 2 waters
title Evolution of Ocean Color Atmospheric Correction: 1970–2005
title_full Evolution of Ocean Color Atmospheric Correction: 1970–2005
title_fullStr Evolution of Ocean Color Atmospheric Correction: 1970–2005
title_full_unstemmed Evolution of Ocean Color Atmospheric Correction: 1970–2005
title_short Evolution of Ocean Color Atmospheric Correction: 1970–2005
title_sort evolution of ocean color atmospheric correction 1970 2005
topic atmospheric correction
water-leaving radiance
aerosol
dark target
Case 1 waters
Case 2 waters
url https://www.mdpi.com/2072-4292/13/24/5051
work_keys_str_mv AT howardrgordon evolutionofoceancoloratmosphericcorrection19702005