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dc.contributor.authorLi, Chi
dc.contributor.authorXue, Yong
dc.contributor.authorLiu, Quanhua
dc.contributor.authorOuazzane, Karim
dc.contributor.authorZhang, Jiahua
dc.date.accessioned2017-10-30T09:53:00Z
dc.date.available2017-10-30T09:53:00Z
dc.date.issued2014-06-30
dc.identifier.citationLi, C. et al (2015) 'Using SeaWiFS Measurements to Evaluate Radiometric Stability of Pseudo-Invariant Calibration Sites at Top of Atmosphere', IEEE Geoscience and Remote Sensing Letters, 12 (1):125en
dc.identifier.issn1545598X
dc.identifier.doi10.1109/LGRS.2014.2329138
dc.identifier.urihttp://hdl.handle.net/10545/621925
dc.description.abstractThe Sea-Viewing Wide Field-of-View Sensor (SeaWiFS) data from 1997 to 2001 are adopted to monitor the radiometric stability of six pseudo-invariant calibration sites (PICSs) at the top of atmosphere (TOA). Cloud-free and homogeneous observations of the spectral TOA reflectance ρTOA at eight SeaWiFS channels over these sites are fitted to the Ross-Li bidirectional reflectance distribution function (BRDF) model, and the time series of BRDF-normalized spectral TOA reflectance RTOA is presented and analyzed afterward. Overall, good stability during the evaluated period is exhibited as more than half of the derived trends are statistically insignificant, whereas root mean square (RMS) of the BRDF modeling residuals reveal spectral dependence of the PICSs' stability at TOA, i.e., the uncertainty of RTOA appears to be larger at shortwave visible (SV) channels (~2.5%) compared with that of red/NIR bands (~1%). In addition, the early mission data adopted in our study shows favorable reliability thus is recommended to be applied for similar purposes.
dc.description.sponsorshipN/Aen
dc.language.isoenen
dc.publisherIEEEen
dc.relation.urlhttp://ieeexplore.ieee.org/document/6846342/en
dc.rightsArchived with thanks to IEEE Geoscience and Remote Sensing Lettersen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectRemote sensingen
dc.subjectAtmospheric radiationen
dc.subjectCalibrationen
dc.subjectOceanographic techniquesen
dc.subjectReflectivityen
dc.subjectSensorsen
dc.subjectTime seriesen
dc.titleUsing SeaWiFS measurements to evaluate radiometric stability of pseudo-invariant calibration sites at top of atmosphereen
dc.typeArticleen
dc.identifier.eissn15580571
dc.contributor.departmentInstitute of Remote Sciences and Digital Earthen
dc.contributor.departmentUniversity of Marylanden
dc.contributor.departmentLondon Metropolitan Universityen
dc.identifier.journalIEEE Geoscience and Remote Sensing Lettersen
html.description.abstractThe Sea-Viewing Wide Field-of-View Sensor (SeaWiFS) data from 1997 to 2001 are adopted to monitor the radiometric stability of six pseudo-invariant calibration sites (PICSs) at the top of atmosphere (TOA). Cloud-free and homogeneous observations of the spectral TOA reflectance ρTOA at eight SeaWiFS channels over these sites are fitted to the Ross-Li bidirectional reflectance distribution function (BRDF) model, and the time series of BRDF-normalized spectral TOA reflectance RTOA is presented and analyzed afterward. Overall, good stability during the evaluated period is exhibited as more than half of the derived trends are statistically insignificant, whereas root mean square (RMS) of the BRDF modeling residuals reveal spectral dependence of the PICSs' stability at TOA, i.e., the uncertainty of RTOA appears to be larger at shortwave visible (SV) channels (~2.5%) compared with that of red/NIR bands (~1%). In addition, the early mission data adopted in our study shows favorable reliability thus is recommended to be applied for similar purposes.


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