Radiative transfer modeling of a coniferous canopy characterized by airborne remote sensing

Richard Essery, Peter Bunting, Janet Hardy, Tim Link, Danny Marks, Rae Melloh, John Pomeroy, Aled Rowlands, Nick Rutter

Research output: Contribution to journalArticlepeer-review

64 Citations (Scopus)

Abstract

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.
Original languageEnglish
Pages (from-to)228-241
JournalJournal of Hydrometeorology
Volume9
Issue number2
DOIs
Publication statusPublished - Apr 2008

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