Radiative Transfer Modeling of a Coniferous Canopy Characterized by Airborne Remote Sensing
| Autor: | Janet P. Hardy, Nick Rutter, Danny Marks, Rae A. Melloh, Richard Essery, John W. Pomeroy, Peter Bunting, A. P. Rowlands, Timothy E. Link |
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| Rok vydání: | 2008 |
| Předmět: |
Atmospheric Science
Tree canopy Radiometer FOREST CANOPIES TRANSMISSION Hemispherical photography AREA SPATIAL-PATTERNS PARAMETERS REFLECTANCE DELINEATION Atmospheric radiative transfer codes Aerial photography Radiative transfer Spatial ecology Environmental science TREE CROWNS DEPLETION Spatial analysis Remote sensing |
| Zdroj: | Essery, R, Bunting, P, Hardy, J, Link, T, Marks, D, Melloh, R, Pomeroy, J, Rowlands, A & Rutter, N 2008, ' Radiative transfer modeling of a coniferous canopy characterized by airborne remote sensing ', Journal of Hydrometeorology, vol. 9, no. 2, pp. 228-241 . https://doi.org/10.1175/2007JHM870.1 |
| ISSN: | 1525-7541 1525-755X |
| DOI: | 10.1175/2007jhm870.1 |
| Popis: | Solar radiation beneath a forest canopy can have large spatial variations, but this is frequently neglected in radiative transfer models for large-scale applications. To explicitly model spatial variations in subcanopy radiation, maps of canopy structure are required. Aerial photography and airborne laser scanning are used to map tree locations, heights, and crown diameters for a lodgepole pine forest in Colorado as inputs to a spatially explicit radiative transfer model. Statistics of subcanopy radiation simulated by the model are compared with measurements from radiometer arrays, and scaling of spatial statistics with temporal averaging and array size is discussed. Efficient parameterizations for spatial averages and standard deviations of subcanopy radiation are developed using parameters that can be obtained from the model or hemispherical photography. |
| Databáze: | OpenAIRE |
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