Sensitivity of scope modelled GPP and fluorescence for different plant functional types

This study addresses the question which factors are responsible for reported positive correlations between solar induced fluorescence (SIF) and gross primary production (GPP). A sensitivity analysis of the model SCOPE, which simulates photosynthesis, fluorescence emission and radiative transfer in c...

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Bibliographic Details
Published in:2014 6th Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing (WHISPERS)
Main Authors: Van Der Tol, Christiaan, Verhoef, Wout, Verrelst, Jochem, Magnani, Federico, Mohammed, Gina, Moreno, Jose, Berry, Joe
Format: Conference Object
Language:English
Published: IEEE Computer Society 2014
Subjects:
fluorescence
gross primary production
plant functional type
SCOPE
sensitivity analysi
1707
Signal Processing
Tundra
Online Access:http://hdl.handle.net/11585/625892
https://doi.org/10.1109/WHISPERS.2014.8077544
http://ieeexplore.ieee.org/xpl/conferences.jsp
Description
Summary:This study addresses the question which factors are responsible for reported positive correlations between solar induced fluorescence (SIF) and gross primary production (GPP). A sensitivity analysis of the model SCOPE, which simulates photosynthesis, fluorescence emission and radiative transfer in canopies, has been carried out for four different plant functional types (PFT): tropical rainforest, C4 crops, C3 crops, and tundra, located in distinct climate zones: tropical everwet (Af), tropical with seasonal drought (savannah, Aw), temperate (Cf), and continental tundra (Dfd). Literature values for structural and physiological parameters and climate reanalysis data were used as input. The effect of main driving variables points towards a positive relation between GPP and SIF. For all four climates, the partial derivative of SIF to GPP is higher when irradiance varies than when any other parameter varies. Climate and PFT specific differences occurred, including a hot-spot effect on SIF in the tropics, relatively strong sensitivity of SIF and GPP to carboxylation capacity in the tropics, and a temperature and humidity effect in the tropical seasonal climate.

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