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3.2.3. SUEWS_Conductance.txt#
SUEWS_Conductance.txt contains the parameters needed for the Jarvis
(1976) [Jarvis, 1976] surface conductance model used in the modelling of evaporation in
SUEWS. These values should not be changed independently of each
other. The suggested values below have been derived using datasets for
Los Angeles and Vancouver (see Järvi et al. [2011]) and should be
used with gsModel
= 1. An alternative formulation ( gsModel
=2) uses
slightly different functional forms and different coefficients (with
different units).
No. |
Column Name |
Use |
Description |
---|---|---|---|
1.0 |
Code linking to a corresponding look-up table. |
||
2.0 |
Related to maximum surface conductance [mm s-1] |
||
3.0 |
Related to Kdown dependence [W m-2] |
||
4.0 |
Related to VPD dependence [units depend on |
||
5.0 |
Related to VPD dependence [units depend on |
||
6.0 |
Related to temperature dependence [°C] |
||
7.0 |
Related to soil moisture dependence [mm-1] |
||
8.0 |
Upper air temperature limit [°C] |
||
9.0 |
Lower air temperature limit [°C] |
||
10.0 |
A parameter related to soil moisture dependence [-] |
||
11.0 |
A parameter related to soil moisture dependence [mm] |
||
12.0 |
Maximum incoming shortwave radiation [W m-2] |
||
13.0 |
Formulation choice for conductance calculation. |
An example SUEWS_Conductance.txt can be found below:
1 2 3 4 5 6 7 8 9 10 11 12 13
Code G1 G2 G3 G4 G5 G6 TH TL S1 S2 Kmax gsModel
100 16.4764 566.0923 0.2163 3.3649 11.0764 0.0176 40 0 0.45 15 1200 1 ! Default Jarvi et al. (2011) gsModel=1
200 3.5 200 0.13 0.7 30 0.05 55 -10 5.56 0 1200 2 ! Updated Ward et al. (2016) gsModel=2
-9
-9