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Article: Validation of MISR land surface broadband albedo
Title | Validation of MISR land surface broadband albedo |
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Authors | |
Issue Date | 2008 |
Citation | International Journal of Remote Sensing, 2008, v. 29, n. 23, p. 6971-6983 How to Cite? |
Abstract | Land surface broadband albedo is a critical variable for many scientific applications. Due to the scarcity of spectral albedo measurements of the Earth's surface environments, it is useful to construct broadband albedo from spectral albedo data obtained by multi-angle satellite observations. The Multi-angle Imaging SpectroRadiometer (MISR) onboard NASA's Earth Observing System (EOS) Terra satellite provides land surface albedo products from multi-angular observations; however, the products have not been comprehensively validated. We convert MISR spectral albedos to total shortwave albedos and validate them using ground measurements at different validation sites. For most surface types, a published narrowband to broadband conversion formula was used, but a new conversion formula for snow and ice covered sites is developed in this study where the spectral range of the instrument is different. Several comparisons are made: (1) between MISR directional-hemispherical reflectance (DHR) or albedo and MODIS (Moderate Resolution Imaging Spectroradiometer) DHR; and (2) between MISR spectral DHR and bi-hemispherical reflectance (BHR). The results show that: (1) both the value and the temporal trends of the MISR shortwave albedo and the ground measured shortwave albedo are in good agreement, with the exception of the snow and ice sites; (2) the MISR DHR conforms well to MODIS DHR; and (3) the values of MISR DHR and BHR are nearly identical. |
Persistent Identifier | http://hdl.handle.net/10722/321360 |
ISSN | 2023 Impact Factor: 3.0 2023 SCImago Journal Rankings: 0.776 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Chen, Y. M. | - |
dc.contributor.author | Liang, S. | - |
dc.contributor.author | Wang, J. | - |
dc.contributor.author | Kim, H. Y. | - |
dc.contributor.author | Martonchik, J. V. | - |
dc.date.accessioned | 2022-11-03T02:18:23Z | - |
dc.date.available | 2022-11-03T02:18:23Z | - |
dc.date.issued | 2008 | - |
dc.identifier.citation | International Journal of Remote Sensing, 2008, v. 29, n. 23, p. 6971-6983 | - |
dc.identifier.issn | 0143-1161 | - |
dc.identifier.uri | http://hdl.handle.net/10722/321360 | - |
dc.description.abstract | Land surface broadband albedo is a critical variable for many scientific applications. Due to the scarcity of spectral albedo measurements of the Earth's surface environments, it is useful to construct broadband albedo from spectral albedo data obtained by multi-angle satellite observations. The Multi-angle Imaging SpectroRadiometer (MISR) onboard NASA's Earth Observing System (EOS) Terra satellite provides land surface albedo products from multi-angular observations; however, the products have not been comprehensively validated. We convert MISR spectral albedos to total shortwave albedos and validate them using ground measurements at different validation sites. For most surface types, a published narrowband to broadband conversion formula was used, but a new conversion formula for snow and ice covered sites is developed in this study where the spectral range of the instrument is different. Several comparisons are made: (1) between MISR directional-hemispherical reflectance (DHR) or albedo and MODIS (Moderate Resolution Imaging Spectroradiometer) DHR; and (2) between MISR spectral DHR and bi-hemispherical reflectance (BHR). The results show that: (1) both the value and the temporal trends of the MISR shortwave albedo and the ground measured shortwave albedo are in good agreement, with the exception of the snow and ice sites; (2) the MISR DHR conforms well to MODIS DHR; and (3) the values of MISR DHR and BHR are nearly identical. | - |
dc.language | eng | - |
dc.relation.ispartof | International Journal of Remote Sensing | - |
dc.title | Validation of MISR land surface broadband albedo | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1080/01431160802199876 | - |
dc.identifier.scopus | eid_2-s2.0-56049109545 | - |
dc.identifier.volume | 29 | - |
dc.identifier.issue | 23 | - |
dc.identifier.spage | 6971 | - |
dc.identifier.epage | 6983 | - |
dc.identifier.eissn | 1366-5901 | - |
dc.identifier.isi | WOS:000260677800014 | - |