Note
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4.3.2. Vegetation parameters¶
-
LeavesOutInitially
¶
Requirement: Optional Description: Flag for initial leave status [1 or 0] Configuration: If the model run starts in winter when trees are bare, set LeavesOutInitially
= 0 and the vegetation parameters will be set accordingly based on the values set in SUEWS_SiteInfo.xlsm. If the model run starts in summer when leaves are fully out, setLeavesOutInitially
= 1 and the vegetation parameters will be set accordingly based on the values set in SUEWS_SiteInfo.xlsm. Not LeavesOutInitially can only be set to 0, 1 or -999 (fractional values cannot be used to indicate partial leaf-out). The value ofLeavesOutInitially
overrides any values provided for the individual vegetation parameters. To preventLeavesOutInitially
from setting the initial conditions, either omit it from the namelist or set to -999. If values are provided individually, they should be consistent the information provided in SUEWS_Veg.txt and the time of year. If values are provided individually, values for all required surfaces must be provided (i.e. specifying onlyalbGrass0
but notalbDecTr0
noralbEveTr0
is not permitted).
-
GDD_1_0
¶
Requirement: Optional Description: GDD related initial value Configuration: Cannot be negative. If leaves are already full, then this should be the same as GDDFull
in SUEWS_Veg.txt. If winter, set to 0. It is important that the vegetation characteristics are set correctly (i.e. for the start of the run in summer/winter).
-
GDD_2_0
¶
Requirement: Optional Description: GDD related initial value Configuration: Cannot be positive If the leaves are full but in early/mid summer then set to 0. If late summer or autumn , this should be a negative value. If leaves are off , then use the values of SDDFull
in SUEWS_Veg.txt to guide your minimum value. It is important that the vegetation characteristics are set correctly (i.e. for the start of the run in summer/winter).
-
LAIinitialEveTr
¶
Requirement: Optional Description: Initial LAI for evergreen trees EveTr
.Configuration: The recommended values can be found from SUEWS_Veg.txt
-
LAIinitialDecTr
¶
Requirement: Optional Description: Initial LAI for deciduous trees DecTr
.Configuration: The recommended values can be found from SUEWS_Veg.txt
-
LAIinitialGrass
¶
Requirement: Optional Description: Initial LAI for irrigated grass Grass
.Configuration: The recommended values can be found from SUEWS_Veg.txt
-
albEveTr0
¶
Requirement: Optional Description: Albedo of evergreen surface EveTr
on day 0 of runConfiguration: The recommended values can be found from SUEWS_Veg.txt
-
albDecTr0
¶
Requirement: Optional Description: Albedo of deciduous surface DecTr
on day 0 of runConfiguration: The recommended values can be found from SUEWS_Veg.txt
-
albGrass0
¶
Requirement: Optional Description: Albedo of grass surface Grass
on day 0 of runConfiguration: The recommended values can be found from SUEWS_Veg.txt
-
decidCap0
¶
Requirement: Optional Description: Storage capacity of deciduous surface DecTr
on day 0 of run.Configuration: The recommended values can be found from SUEWS_Veg.txt
-
porosity0
¶
Requirement: Optional Description: Porosity of deciduous vegetation on day 0 of run. Configuration: This varies between 0.2 (leaf-on) and 0.6 (leaf-off). The recommended values can be found from SUEWS_Veg.txt