Phase: RAMI4PILPS
The Joint UK Land Environment Simulator (JULES) used here is the radiative transfer scheme of both the TRIFFID (Top-down Representation of Interactive Foliage and Flora Including Dynamics) and JULES (Joint UK Land Environment Simulator) [Cox, 2001; Essery et al., 2003].
JULES is the UK community land surface model designed to be interfaced with the UK Met Office Unified Model.
TRIFFID is (optionally) used within JULES to provide vegetation dynamics.
The radiative transfer scheme is based on the two-stream model of Sellers [1985].
In order to participate in RAMI4PILPS the radiative transfer scheme was isolated from the main body of the JULES code (written in Fortran) and an interface was wrapped around it (in C) to allow it to be run for arbitrary scenarios.
Since JULES provided only absorbed and reflected fluxes the canopy transmission had to be generated by enforcing energy closure.
