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996 KB pdf

996 KB pdf

Canopy level: radiative

Canopy level: radiative transfer modelling4-stream radiative transfer:direct radiation, diffuse upward, diffuse downward, in observation directionSunlit leaves:P(viewing sunlit-side | sunlit) * direct radiance * MatrixbP(viewing ‘back’-side | sunlit) * direct irradiance * MatrixfShaded leaves:P(viewing backside)*diffuse upward irradiance * MatrixfP(viewing frontside)*diffuse upward irradiance * MatrixfbP(viewing backside)*diffuse downward irradiance * MatrixfP(viewing frontside)*diffuse downward irradiance * Matrixb---------------------------------------------------------- +total F in viewing directionKISS Photosynthesis Workshop, Pasadena, 26-31 August 2012

What do we see at TOC?For 3 wavelengths (BRDF and the two peaks: 685 and 730, and 755nm)For LAI = 2, Cab = 60, R in= 600 W m -2Fluorescence directionality is different from BRDFWe see mainly the back of sunlit leavesKISS Photosynthesis Workshop, Pasadena, 26-31 August 2012

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