Land Surface Albedo Estimation from Chinese HJ Satellite Data Based on the Direct Estimation Approach

dc.contributor.authorHe, Tao
dc.contributor.authorLiang, Shunlin
dc.contributor.authorWang, Dongdong
dc.contributor.authorChen, Xiaona
dc.contributor.authorSong, Dan-Xia
dc.contributor.authorJiang, Bo
dc.date.accessioned2024-01-11T21:33:48Z
dc.date.available2024-01-11T21:33:48Z
dc.date.issued2015-05-04
dc.description.abstractMonitoring surface albedo at medium-to-fine resolution (<100 m) has become increasingly important for medium-to-fine scale applications and coarse-resolution data evaluation. This paper presents a method for estimating surface albedo directly using top-of-atmosphere reflectance. This is the first attempt to derive surface albedo for both snow-free and snow-covered conditions from medium-resolution data with a single approach. We applied this method to the multispectral data from the wide-swath Chinese HuanJing (HJ) satellites at a spatial resolution of 30 m to demonstrate the feasibility of this data for surface albedo monitoring over rapidly changing surfaces. Validation against ground measurements shows that the method is capable of accurately estimating surface albedo over both snow-free and snow-covered surfaces with an overall root mean square error (RMSE) of 0.030 and r-square (R2) of 0.947. The comparison between HJ albedo estimates and the Moderate Resolution Imaging Spectral Radiometer (MODIS) albedo product suggests that the HJ data and proposed algorithm can generate robust albedo estimates over various land cover types with an RMSE of 0.011–0.014. The accuracy of HJ albedo estimation improves with the increase in view zenith angles, which further demonstrates the unique advantage of wide-swath satellite data in albedo estimation.
dc.description.urihttps://doi.org/10.3390/rs70505495
dc.identifierhttps://doi.org/10.13016/dspace/n2bl-u3q4
dc.identifier.citationHe, T.; Liang, S.; Wang, D.; Chen, X.; Song, D.-X.; Jiang, B. Land Surface Albedo Estimation from Chinese HJ Satellite Data Based on the Direct Estimation Approach. Remote Sens. 2015, 7, 5495-5510.
dc.identifier.urihttp://hdl.handle.net/1903/31573
dc.language.isoen_US
dc.publisherMDPI
dc.relation.isAvailableAtCollege of Behavioral & Social Sciencesen_us
dc.relation.isAvailableAtGeographyen_us
dc.relation.isAvailableAtDigital Repository at the University of Marylanden_us
dc.relation.isAvailableAtUniversity of Maryland (College Park, MD)en_us
dc.subjectsurface albedo
dc.subjectdirect estimation
dc.subjectmedium resolution
dc.subjectsnow albedo
dc.subjectHJ data
dc.titleLand Surface Albedo Estimation from Chinese HJ Satellite Data Based on the Direct Estimation Approach
dc.typeArticle
local.equitableAccessSubmissionNo

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