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Narrowband to broadband conversions of land surface albedo: ii. Validation. Remote sensing of the environment, submitted (2000).
| Content Provider | CiteSeerX |
|---|---|
| Author | Liang, Shunlin |
| Abstract | Land surface broadband albedo is a critical variable for many scientific applications. High-resolution narrowband satellite observations contain important information that enables us to map land surface albedo globally, and validate the coarse-resolution albedo products from the broadband sensors using ground ``point/plot' ' measurements. However, the conversions from narrowband to broadband albedos of a general surface type have not been well established. Most studies compute total shortwave albedo based on either the empirical relations between surface total shortwave albedo measurements and satellite observations or radiative transfer simulations with the limited number of surface reflectance spectra because of the computational constraints. As a result, many conversion formulae for the same sensors are quite different. In this study, we applied an approach that decouples surface reflectance spectra from the real-time radiative transfer simulations so that many different surface reflectance spectra and the atmospheric conditions can be effectively incorporated. The conversion formulae, based on extensive radiative transfer simulations, are provided in this paper for calculating the total shortwave albedo, total-, direct-, and diffuse-visible, and near-infrared broadband albedos for several narrowband sensors, including ASTER, |
| File Format | |
| Publisher Date | 2000-01-01 |
| Access Restriction | Open |
| Subject Keyword | Land Surface Albedo Remote Sensing Surface Reflectance Spectrum Total Shortwave Albedo Coarse-resolution Albedo Product Surface Total Shortwave Albedo Measurement Conversion Formula Near-infrared Broadband Albedo Critical Variable High-resolution Narrowband Satellite Observation Many Conversion Formula General Surface Type Several Narrowband Sensor Many Different Surface Reflectance Spectrum Real-time Radiative Transfer Simulation Point Plot Computational Constraint Atmospheric Condition Many Scientific Application Empirical Relation Satellite Observation Extensive Radiative Transfer Simulation Land Surface Broadband Albedo Important Information Radiative Transfer Simulation Broadband Sensor Limited Number |
| Content Type | Text |
| Resource Type | Article |
