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Soil-vegetation-atmosphere-transfer (SVAT) models are incorporated in general circulation models to treat atmosphere/vegetation interactions explicitly. SVAT models require parameters characterising the surface and determining the exchange of momentum, energy, water, etc., between the land surface and the lower atmosphere. The PARADYNE model determines these parameters dynamically on the basis of environmental information. PARADYNE is a terrestrial biosphere scheme based on physical and biological principles, verified with satellite remote sensing data and land-based biogeographical surveys. One of PARADYNE's main products is a physically and ecologically coherent set of vegetation parameters derived using a plant functional type (PFT) approach. This set of parameters describes the GCM lower boundary conditions for SVAT models and is updated monthly. The parameter set includes roughness length, rooting depth, albedo, maximum stomatal conductance, and the seasonal variation of the leaf area index. After a general presentation of its PFT modelling rationale, PARADYNE is described in detail and its performance discussed using remotely sensed information and a variety of numerical simulation experiments.

Additional information

Authors: MARTIN P, JRC Ispra (IT)
Bibliographic Reference: Paper presented: European Geophysical Society, XXth General Assembly, Hamburg (DE), April 3-7, 1995
Availability: Available from (1) as Paper EN 38939 ORA
Record Number: 199510673 / Last updated on: 1995-07-07
Original language: en
Available languages: en
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