SUEWS_Water.txt

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3.2.12. SUEWS_Water.txt#

SUEWS_Water.txt specifies the characteristics for the water surface cover type by linking codes in column 1 of SUEWS_Water.txt to the codes specified in SUEWS_SiteSelect.txt (Code_Water).

No.

Column Name

Use

Description

1.0

Code

L

Code linking to a corresponding look-up table.

2.0

AlbedoMin

MU

Effective surface albedo (middle of the day value) for wintertime (not including snow).

3.0

AlbedoMax

MU

Effective surface albedo (middle of the day value) for summertime.

4.0

Emissivity

MU

Effective surface emissivity.

5.0

StorageMin

MD

Minimum water storage capacity for upper surfaces (i.e. canopy).

6.0

StorageMax

MD

Maximum water storage capacity for upper surfaces (i.e. canopy)

7.0

WetThreshold

MD

Depth of water which determines whether evaporation occurs from a partially wet or completely wet surface [mm].

8.0

StateLimit

MU

Upper limit to the surface state. [mm]

9.0

WaterDepth

MU

Water depth [mm].

10.0

DrainageEq

MD

Calculation choice for Drainage equation

11.0

DrainageCoef1

MD

Coefficient D0 [mm h-1] used in DrainageEq

12.0

DrainageCoef2

MD

Coefficient b [-] used in DrainageEq

13.0

OHMCode_SummerWet

L

Code for OHM coefficients to use for this surface during wet conditions in summer, linking to SUEWS_OHMCoefficients.txt.

14.0

OHMCode_SummerDry

L

Code for OHM coefficients to use for this surface during dry conditions in summer, linking to SUEWS_OHMCoefficients.txt.

15.0

OHMCode_WinterWet

L

Code for OHM coefficients to use for this surface during wet conditions in winter, linking to SUEWS_OHMCoefficients.txt.

16.0

OHMCode_WinterDry

L

Code for OHM coefficients to use for this surface during dry conditions in winter, linking to SUEWS_OHMCoefficients.txt.

17.0

OHMThresh_SW

MD

Temperature threshold determining whether summer/winter OHM coefficients are applied [°C]

18.0

OHMThresh_WD

MD

Soil moisture threshold determining whether wet/dry OHM coefficients are applied [-]

19.0

ESTMCode

L

Code for ESTM coefficients linking to SUEWS_ESTMCoefficients.txt

20.0

AnOHM_Cp

MU

Volumetric heat capacity for this surface to use in AnOHM [J m-3]

21.0

AnOHM_Kk

MU

Thermal conductivity for this surface to use in AnOHM [W m K-1]

22.0

AnOHM_Ch

MU

Bulk transfer coefficient for this surface to use in AnOHM [-]

An example SUEWS_Water.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
Code 	 AlbedoMin 	 AlbedoMax 	 Emissivity 	 StorageMin 	 StorageMax 	 WetThreshold 	 StateLimit 	 WaterDepth 	 DrainageEq 	 DrainageCoef1 	 DrainageCoef2 	 OHMCode_SummerWet 	 OHMCode_SummerDry 	 OHMCode_WinterWet 	 OHMCode_WinterDry 	 OHMThresh_SW 	 OHMThresh_WD 	 ESTMCode 	 AnOHM_Cp 	 AnOHM_Kk 	 AnOHM_Ch
1000 	 0.08      	 0.08      	 0.95       	 0.5        	 0.5        	 0.5          	 2000       	 2000       	 0          	 0             	 0             	 60                	 60                	 60                	 60                	 10           	 0.9          	 60       	 4100000   	 1.2      	 4        	 ! 	 Helsinki 	 Jarvi   et       al.    (2014)
551  	 0.1       	 0.1       	 0.95       	 0.5        	 0.5        	 0.5          	 1000       	 1000       	 -999       	 -999          	 -999          	 60                	 60                	 60                	 60                	 10           	 0.9          	 60       	 4100000   	 1.2      	 4        	 ! 	 Swindon    (no     water) 	 Ward   et       al.   (2013)
661  	 0.1       	 0.1       	 0.95       	 0.5        	 0.5        	 0.5          	 30000      	 20000      	 0          	 0             	 0             	 60                	 60                	 60                	 60                	 10           	 0.9          	 813      	 4100000   	 1.2      	 4        	 ! 	 London
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