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Article: Land Surface Albedo Estimation with Chinese GF-1 WFV Data in Northwest China

TitleLand Surface Albedo Estimation with Chinese GF-1 WFV Data in Northwest China
Authors
KeywordsGF-1 wide field view (WFV) data
High spatial resolution
Land surface albedo (LSA)
Issue Date2022
Citation
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022, v. 15, p. 849-861 How to Cite?
AbstractLand surface albedo (LSA) is one of the driving factors in the energy balance of surface radiation and the interaction between the earth and atmosphere. LSA is an important parameter that is widely used in surface energy balance, medium-and long-term weather forecasting, and global change studies. GF-1 wide field view (WFV) data provide a spatial resolution of 16 m and temporally intensive land surface observations, but efficient algorithm was still lacking for quantitatively land surface parameters estimation. It is essential to improve the data use ability by generating efficient land surface parameter retrieval algorithms. This study proposed an LSA retrieval algorithm by using GF-1 WFV data. Land surface bidirectional reflectance distribution function characteristic parameters were used to represent the non-Lambertian characteristic of land surface. The top of atmosphere (TOA) reflectance is simulated by the 6S radiative transfer model by considering non-Lambertian land surfaces. Linear regression is applied in the TOA reflectance, and LSA is simulated with the surface bidirectional reflectance characteristic parameters to build a lookup table. The proposed algorithm can estimate LSA with high accuracy according to the TOA reflectance without the complex multistep inversion process. The validation results of ground measurements in Northwest China for different land cover types show that the algorithm is effective, and the overall root mean square error was 0.036 when compared with field observation. The algorithm also shows great consistency with Landsat albedo data. The proposed algorithm is of great significance for improving GF data utilization.
Persistent Identifierhttp://hdl.handle.net/10722/323145
ISSN
2023 Impact Factor: 4.7
2023 SCImago Journal Rankings: 1.434
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhou, Hongmin-
dc.contributor.authorWang, Zhe-
dc.contributor.authorMa, Wu-
dc.contributor.authorHe, Tao-
dc.contributor.authorWan, Huawei-
dc.contributor.authorWang, Jindi-
dc.contributor.authorLiang, Shunlin-
dc.date.accessioned2022-11-18T11:55:02Z-
dc.date.available2022-11-18T11:55:02Z-
dc.date.issued2022-
dc.identifier.citationIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022, v. 15, p. 849-861-
dc.identifier.issn1939-1404-
dc.identifier.urihttp://hdl.handle.net/10722/323145-
dc.description.abstractLand surface albedo (LSA) is one of the driving factors in the energy balance of surface radiation and the interaction between the earth and atmosphere. LSA is an important parameter that is widely used in surface energy balance, medium-and long-term weather forecasting, and global change studies. GF-1 wide field view (WFV) data provide a spatial resolution of 16 m and temporally intensive land surface observations, but efficient algorithm was still lacking for quantitatively land surface parameters estimation. It is essential to improve the data use ability by generating efficient land surface parameter retrieval algorithms. This study proposed an LSA retrieval algorithm by using GF-1 WFV data. Land surface bidirectional reflectance distribution function characteristic parameters were used to represent the non-Lambertian characteristic of land surface. The top of atmosphere (TOA) reflectance is simulated by the 6S radiative transfer model by considering non-Lambertian land surfaces. Linear regression is applied in the TOA reflectance, and LSA is simulated with the surface bidirectional reflectance characteristic parameters to build a lookup table. The proposed algorithm can estimate LSA with high accuracy according to the TOA reflectance without the complex multistep inversion process. The validation results of ground measurements in Northwest China for different land cover types show that the algorithm is effective, and the overall root mean square error was 0.036 when compared with field observation. The algorithm also shows great consistency with Landsat albedo data. The proposed algorithm is of great significance for improving GF data utilization.-
dc.languageeng-
dc.relation.ispartofIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectGF-1 wide field view (WFV) data-
dc.subjectHigh spatial resolution-
dc.subjectLand surface albedo (LSA)-
dc.titleLand Surface Albedo Estimation with Chinese GF-1 WFV Data in Northwest China-
dc.typeArticle-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1109/JSTARS.2021.3136852-
dc.identifier.scopuseid_2-s2.0-85122101570-
dc.identifier.volume15-
dc.identifier.spage849-
dc.identifier.epage861-
dc.identifier.eissn2151-1535-
dc.identifier.isiWOS:000742730900008-

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