ORCHIDEE-LAK

ORCHIDEE-LAK is based on the version 4369 of the trunk. ORCHIDEE-LAK is the same as ORCHIDEE-MEB except that at the column 2, is assigned the energy and hydrology budgets of the lake.

Implementation

In this version, the multicolumn-version has been developed based on the same idea of the implementation in ORCHIDEE-DOFOCCO-MULTICOLUMN. This implementation is done in ORCHIDEE-MEB.

For calling the lake, the column 2 has been assigned. In the module lake.f90, the implementation of the surface temperature, different fluxes of the lake are done. The module lake.f90 is an adaptation of FLake (​http://www.flake.igb-berlin.de/docs.shtml) to ORCHIDEE.

Validation of the code

Comparison between the surface temperature of this version with FLake offline by using the same inputs. i.e. data from the Seine basins.

Future of the version

Run this version

In order to run the version, as well as for the version ORCHIDEE-MEB, compile it via gmake without_xios then execute it in a test case where a run.def file with the different parameters for the lake version are defined. The different parameters to assign a value are:

#Depth of the lake
DEPTH_LAKE=20 
#Extinction coefficient
TURBIDITY_LAKE=0.1
FETCH=4000
#Height at which is measured the air temperature
HEIGHT_TQ=2
#Height at which is measured the wind speed
HEIGHT_U=2
#Initial mean temperature
T_m=10
#Initial mixed-layer temperature
T_wML=10
#Initial ice temperature
T_ICE=0
#Initial bottom temperature
T_bot=10
#Height of the thermocline
h_ML=10
#Thickness of the ice layer
h_ice=0
#Shape coefficient
CTT=0.5
#Height and temperature of the bottom sediment layer
H_B1=0
T_B1=4
#Time step 
dtlake=1800