Paper Info
Title
Evaluation of Remote Sensing Reflectance Derived From the Sentinel-2 Multispectral Instrument Observations Using POLYMER Atmospheric Correction
Abstract
With a five-day revisit frequency over coastal regions and a spatial resolution of 10-60 m, the Sentinel-2 multispectral instrument (MSI) has shown its capacity to provide a reasonably accurate remote sensing reflectance (R <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">rs</sub> ) data product over water when the standard “black pixel” (BP) atmospheric correction algorithm was applied to the top-ofatmospheric (TOA) reflectance data. Alternative atmospheric correction approaches, such as the POLYnomial-based algorithm applied to Medium Resolution Imaging Spectrometer (MERIS) (POLYMER), may show advantages under nonoptimal observation conditions (e.g., in the presence of strong sun glint). Here, POLYMER is implemented to process the data collected by both MSI and the Moderate Resolution Imaging Spectroradiometer (MODIS) with the resulting R <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">rs</sub> evaluated with concurrent and colocated in situ R <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">rs</sub> data collected from the AERONET-OC platforms. The results indicate less uncertainties in the MSI Rrs than those in the MODIS R <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">rs</sub> , and also less uncertainties in the MSI Rrs than those reported earlier. This is possibly attributed to the spatial heterogeneity of coastal waters where MODIS coarseresolution data may suffer, and to the high-quality AERONETOC data. In addition, for the evaluation data set, MSI R <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">rs</sub> does not appear to suffer from adjacency effects from the AERONETOC platform and clouds, leading to more coverage than MODIS in nearshore waters. However, MSI R <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">rs</sub> is noisy in relatively clear waters, possibly due to the noisy TOA reflectance in the atmospheric correction bands over clear waters.
Year
DOI
Venue
2020
10.1109/TGRS.2020.2969900
IEEE Transactions on Geoscience and Remote Sensing
Keywords
DocType
Volume
AERONET-OC,atmospheric correction,Moderate Resolution Imaging Spectroradiometer (MODIS),multispectral instrument (MSI),ocean color,POLYnomial-based algorithm applied to Medium Resolution Imaging Spectrometer (MERIS) (POLYMER),Sentinel-2
Journal
58
Issue
ISSN
Citations 
8
0196-2892
0
PageRank 
References 
Authors
0.34
0
2
Name
Order
Citations
PageRank
Minwei Zhang194.18
Chuanmin Hu25415.94