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4.2.11. SUEWS_Veg.txt

SUEWS_Veg.txt specifies the characteristics for the vegetated surface cover types (EveTr, DecTr, Grass) by linking codes in column 1 of SUEWS_Veg.txt to the codes specified in SUEWS_SiteSelect.txt (Code_EveTr, Code_DecTr, Code_Grass). Each row should correspond to a particular surface type. For suggestions on how to complete this table, see: Typical Values.

No. Column Name Use Description
1 Code L Code linking to a corresponding look-up table.
2 AlbedoMin MU Effective surface albedo (middle of the day value) for wintertime (not including snow).
3 AlbedoMax MU Effective surface albedo (middle of the day value) for summertime.
4 Emissivity MU Effective surface emissivity.
5 StorageMin MD Minimum water storage capacity for upper surfaces (i.e. canopy).
6 StorageMax MD Maximum water storage capacity for upper surfaces (i.e. canopy)
7 WetThreshold MD Depth of water which determines whether evaporation occurs from a partially wet or completely wet surface [mm].
8 StateLimit MD Upper limit to the surface state. [mm]
9 DrainageEq MD Calculation choice for Drainage equation
10 DrainageCoef1 MD Coefficient D0 [mm h-1] used in DrainageEq
11 DrainageCoef2 MD Coefficient b [-] used in DrainageEq
12 SoilTypeCode L Code for soil characteristics below this surface linking to Code of SUEWS_Soil.txt
13 SnowLimPatch O Limit for the snow water equivalent when snow cover starts to be patchy [mm]
14 BaseT MU Base Temperature for initiating growing degree days (GDD) for leaf growth. [°C]
15 BaseTe MU Base temperature for initiating sensesance degree days (SDD) for leaf off. [°C]
16 GDDFull MU The growing degree days (GDD) needed for full capacity of the leaf area index (LAI) [°C].
17 SDDFull MU The sensesence degree days (SDD) needed to initiate leaf off. [°C]
18 LAIMin MD leaf-off wintertime value
19 LAIMax MD full leaf-on summertime value
20 PorosityMin MD leaf-off wintertime value Used only for DecTr (can affect roughness calculation)
21 PorosityMax MD full leaf-on summertime value Used only for DecTr (can affect roughness calculation)
22 MaxConductance MD The maximum conductance of each vegetation or surface type. [mm s-1]
23 LAIEq MD LAI calculation choice.
24 LeafGrowthPower1 MD a parameter required by LAI calculation in LAIEq
25 LeafGrowthPower2 MD a parameter required by LAI calculation [K-1] in LAIEq
26 LeafOffPower1 MD a parameter required by LAI calculation [K-1] in LAIEq
27 LeafOffPower2 MD a parameter required by LAI calculation [K-1] in LAIEq
28 OHMCode_SummerWet L Code for OHM coefficients to use for this surface during wet conditions in summer, linking to SUEWS_OHMCoefficients.txt.
29 OHMCode_SummerDry L Code for OHM coefficients to use for this surface during dry conditions in summer, linking to SUEWS_OHMCoefficients.txt.
30 OHMCode_WinterWet L Code for OHM coefficients to use for this surface during wet conditions in winter, linking to SUEWS_OHMCoefficients.txt.
31 OHMCode_WinterDry L Code for OHM coefficients to use for this surface during dry conditions in winter, linking to SUEWS_OHMCoefficients.txt.
32 OHMThresh_SW MD Temperature threshold determining whether summer/winter OHM coefficients are applied [°C]
33 OHMThresh_WD MD Soil moisture threshold determining whether wet/dry OHM coefficients are applied [-]
34 ESTMCode L Code for ESTM coefficients linking to SUEWS_ESTMCoefficients.txt
35 AnOHM_Cp MU Volumetric heat capacity for this surface to use in AnOHM [J m-3]
36 AnOHM_Kk MU Thermal conductivity for this surface to use in AnOHM [W m K-1]
37 AnOHM_Ch MU Bulk transfer coefficient for this surface to use in AnOHM [-]
37 BiogenCO2Code MU Code linking to the Code column in SUEWS_BiogenCO2.txt.

An example SUEWS_Veg.txt can be found below:

1        2           3           4               5               6               7               8               9               10              11              12              13              14      15          16          17          18          19          20              21              22                  23      24                  25                  26              27              28                  29                  30                  31                  32              33              34          35          36          37       38
Code     AlbedoMin   AlbedoMax   Emissivity      StorageMin      StorageMax      WetThreshold    StateLimit      DrainageEq      DrainageCoef1   DrainageCoef2   SoilTypeCode    SnowLimPatch    BaseT   BaseTe      GDDFull     SDDFull     LAIMin      LAIMax      PorosityMin     PorosityMax     MaxConductance   LAIEq      LeafGrowthPower1    LeafGrowthPower2    LeafOffPower1   LeafOffPower2   OHMCode_SummerWet   OHMCode_SummerDry   OHMCode_WinterWet   OHMCode_WinterDry   OHMThresh_SW    OHMThresh_WD    ESTMCode    AnOHM_Cp    AnOHM_Kk    AnOHM_Ch BiogenCO2Code
300      0.1         0.1         0.98            1.3             1.3             1.3             1.3             2               0.013           1.71            70              190             5       10          300         -450        4           5.1         -999            -999            7.4                 1       0.04                0.001               -1.5            0.0015          200                 200                 200                 200                 10              0.9             200         1000000     1.2         4        21                 !   ET      Helsinki    Jarvi et al  (2014)
330      0.16        0.16        0.98            0.3             0.8             0.8             0.8             2               0.013           1.71            70              190             5       10          300         -450        1           5.5         0.2             0.6             11.7                1       0.04                0.001               -1.5            0.0015          200                 200                 200                 200                 10              0.9             200         1000000     1.2         4        21                 !   DT      Helsinki    Jarvi et al  (2014)
360      0.19        0.19        0.93            1.9             1.9             1.9             1.9             3               10              3               70              190             5       10          300         -450        1.6         5.9         -999            -999            40                  1       0.04                0.001               -1.5            0.0015          200                 200                 200                 200                 10              0.9             200         1000000     1.2         4        21                 !   IG      Helsinki    Jarvi et al  (2014)
361      0.19        0.19        0.93            1.9             1.9             1.9             1.9             2               0.13            1.71            70              190             5       10          300         -450        1.6         5.9         -999            -999            33.1                1       0.04                0.001               -1.5            0.0015          200                 200                 200                 200                 10              0.9             200         1000000     1.2         4        21                 !   UG      Helsinki    Jarvi et al  (2014)
551      0.1         0.1         0.98            1.3             1.3             1.8             1.3             2               0.013           1.71            553             -999            6       11          300         -450        4           5.1         -999            -999            7.4                 1       0.04                0.001               -1.5            0.0015          200                 200                 200                 200                 10              0.9             810         1000000     1.2         4        11                 !   EveTr   Swindon     Ward  et al. (2013)
552      0.12        0.18        0.98            0.3             0.8             1               0.8             2               0.013           1.71            553             -999            6       11          300         -450        1           5.5         0.2             0.6             11.7                1       0.04                0.001               -1.5            0.0015          200                 200                 200                 200                 10              0.9             811         1000000     1.2         4        11                 !   DecTr   Swindon     Ward  et al. (2013)
553      0.18        0.21        0.93            1.9             1.9             2               1.9             2               0.013           1.71            553             -999            6       11          300         -450        1.6         5.9         -999            -999            33.1                1       0.04                0.001               -1.5            0.0015          200                 200                 200                 200                 10              0.9             812         1000000     1.2         4        11                 !   Grass   Swindon     Ward  et al. (2013)
661      0.11        0.12        0.98            1.3             1.3             1.3             1.3             2               0.013           1.71            661             120             5       11          300         -450        4           5.1         -999            -999            7.4                 0       0.03                0.0005              0.03            0.0005          200                 200                 200                 200                 10              0.9             810         1000000     1.2         4        11                 !   EveTr   London
662      0.12        0.18        0.98            0.3             0.8             0.8             0.8             2               0.013           1.71            661             120             5       11          300         -450        1           5.5         0.2             0.6             11.7                0       0.03                0.0005              0.03            0.0005          200                 200                 200                 200                 10              0.9             811         1000000     1.2         4        11                 !   DecTr   London
663      0.18        0.21        0.93            1.9             1.9             1.9             1.9             2               0.013           1.71            661             120             5       11          300         -450        1.6         5.9         -999            -999            33.1                0       0.03                0.0005              0.03            0.0005          200                 200                 200                 200                 10              0.9             812         1000000     1.2         4        11                 !   Grass   London
700      0.11        0.12        0.98            1.3             1.3             1.3             1.3             2               0.013           1.71            661             120             5       11          300         -450        4           5.1         -999            -999            7.4                 0       0.03                0.0005              0.03            0.0005          201                 201                 201                 201                 10              0.9             810         1000000     1.2         4        11                 !   EveTr   London
701      0.12        0.18        0.98            0.3             0.8             0.8             0.8             2               0.013           1.71            661             120             5       11          300         -450        1           5.5         0.2             0.6             11.7                0       0.03                0.0005              0.03            0.0005          201                 201                 201                 201                 10              0.9             811         1000000     1.2         4        11                 !   DecTr   London
702      0.18        0.21        0.93            1.9             1.9             1.9             1.9             2               0.013           1.71            661             120             5       11          300         -450        1.6         5.9         -999            -999            33.1                0       0.03                0.0005              0.03            0.0005          201                 201                 201                 201                 10              0.9             812         500000      0.2         1        11                 !   Grass   London
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