Vegetation Radiative Transfer Modelling (Nadine Gobron) - PEER

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The time composite algorithm 1) Compute the temporal average and corresponding deviation of product , e.g. FAPAR, over the N-day period: T S = S T 1 ∑ T S t) t= 1 T 1 ( Δ T = | S( t) − S | S T ∑ t= 1 is the number of valid days during the N-day period 2) Select the “most representative day” in the N-days time series such that it corresponds to the value which minimizes | S( t) − S | NB: the procedure is applied twice sequentially to reject values outside the range S ± Δ T S Pinty, B., N. <strong>Gobron</strong>, F. Mélin & M. M. Verstraete (2002) ‘A Time Composite Algorithm Theoretical 76 Basis Document’, Institute for Environment and Sustainability, EUR Report No. 20150 EN, 8 pp.
08/01 08/02 08/03 08/04 08/05 08/06 08/07 08/08 08/09 08/10 Daily to temporal composite 08/1-10 08/1-31 77
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Radiative Transfer Modeling …. ov
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Satellites have different “eyes
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Model of radiation transfer • Sin
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Outline • Radiative Transfer Equa
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• The system under consideration
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Basic Processes (2) •The upward a
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Conservation of radiant energy for
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Asymmetry factor for scattering pro
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Single scattering albedo ↓ ∂I (
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Two-stream equations • In a more
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Extension to N Flux (2) In the limi
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Atmosphere Vegetation Soil Vertical
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Page 31 and 32: ~ Extinction coefficient σ ( z, Ω
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Page 39 and 40: •When the radiation is scattered
Page 41 and 42: Separation of Scattering Order ρ (
Page 43 and 44: I 0 ↑ (H, Ω, Ω 0 ) = 1 π γ s
Page 45 and 46: Uncollided BRF in Principal Plan So
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Page 53 and 54: Ω•∇I λ (x,Ω)+G(x,Ω)u L (x)I
Page 55 and 56: Outline • Radiative Transfer Equa
Page 57 and 58: Association of physical measurement
Page 59 and 60: Model Inversion • In general, the
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Page 85 and 86: http://fapar.jrc.it/ 85
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Vegetation Radiative Transfer Modelling (Nadine Gobron) - PEER

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