{"title":"Retrieval of Ground Surface Reflectance from MODIS Satellite Data with Allowance for Reflectance Heterogeneity and Rugged Topography","authors":"M. V. Tarasenkov, V. V. Belov, M. V. Engel","doi":"10.1134/S1024856024701604","DOIUrl":null,"url":null,"abstract":"<p>An algorithm for retrieving ground surface reflectance from satellite data taking into account the influence of surface reflectance heterogeneity and rugged topography on formation of the adjacency effect and ground surface irradiance is considered. MODIS satellite images of a site with coordinates (50.1°–50.4° N, 90.1°–90.7° E) are used as an example to assess the difference in the results obtained with the suggested algorithm with accounting the ground surface reflectance heterogeneity and rugged topography and neglecting the rugged topography, with the MOD09 algorithm, and with the algorithm without atmospheric correction. The results provided by the suggested algorithm and the MOD09 algorithm well agree. It is shown that the neglect of the rugged topography in the suggested algorithm for the images under study slightly underestimates the reflectance by Δ<i>r</i><sub>surf</sub> ≤ 3.46 × 10<sup>−3</sup> for MODIS band 1, 2.39 × 10<sup>−3</sup> for MODIS band 2, 7.12 × 10<sup>−3</sup> for MODIS band 3, and 5.23 × 10<sup>−3</sup> for MODIS band 4. The algorithm enables increasing the error in retrieving the reflectance from satellite images of strongly rugged heterogeneous surface.</p>","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"37 1 supplement","pages":"S48 - S58"},"PeriodicalIF":0.9000,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Atmospheric and Oceanic Optics","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S1024856024701604","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
An algorithm for retrieving ground surface reflectance from satellite data taking into account the influence of surface reflectance heterogeneity and rugged topography on formation of the adjacency effect and ground surface irradiance is considered. MODIS satellite images of a site with coordinates (50.1°–50.4° N, 90.1°–90.7° E) are used as an example to assess the difference in the results obtained with the suggested algorithm with accounting the ground surface reflectance heterogeneity and rugged topography and neglecting the rugged topography, with the MOD09 algorithm, and with the algorithm without atmospheric correction. The results provided by the suggested algorithm and the MOD09 algorithm well agree. It is shown that the neglect of the rugged topography in the suggested algorithm for the images under study slightly underestimates the reflectance by Δrsurf ≤ 3.46 × 10−3 for MODIS band 1, 2.39 × 10−3 for MODIS band 2, 7.12 × 10−3 for MODIS band 3, and 5.23 × 10−3 for MODIS band 4. The algorithm enables increasing the error in retrieving the reflectance from satellite images of strongly rugged heterogeneous surface.
期刊介绍:
Atmospheric and Oceanic Optics is an international peer reviewed journal that presents experimental and theoretical articles relevant to a wide range of problems of atmospheric and oceanic optics, ecology, and climate. The journal coverage includes: scattering and transfer of optical waves, spectroscopy of atmospheric gases, turbulent and nonlinear optical phenomena, adaptive optics, remote (ground-based, airborne, and spaceborne) sensing of the atmosphere and the surface, methods for solving of inverse problems, new equipment for optical investigations, development of computer programs and databases for optical studies. Thematic issues are devoted to the studies of atmospheric ozone, adaptive, nonlinear, and coherent optics, regional climate and environmental monitoring, and other subjects.