4.4. Meteorological Input File¶

SUEWS is designed to run using commonly measured meteorological variables.

Required inputs must be continuous – i.e. gap fill any missing data.
Temporal information (i.e., iy, id, it and imin should be in local time.
The table below gives the must-use (MU) and optional (O) additional input variables.
If an optional input variable is not available or will not be used by the model, enter ‘-999.0’ for this column.
Since v2017a forcing files no longer need to end with two rows containing ‘-9’ in the first column.
One single meteorological file can be used for all grids (MultipleMetFiles=0 in RunControl.nml, no grid number in file name) if appropriate for the study area, or
separate met files can be used for each grid if data are available (MultipleMetFiles=1 in RunControl.nml, filename includes grid number).
The meteorological forcing file names should be appended with the temporal resolution in minutes (SS_YYYY_data_tt.txt, or SSss_YYYY_data_tt.txt for multiple grids).
Separate met forcing files should be provided for each year.
Files do not need to start/end at the start/end of the year, but they must contain a whole number of days.
The meteorological input file should match the information given in SUEWS_SiteSelect.txt.
If a partial year is used that specific year must be given in SUEWS_SiteSelect.txt.
If multiple years are used, all years should be included in SUEWS_SiteSelect.txt.
If a whole year (e.g. 2011) is intended to be modelled using and hourly resolution dataset, the number of lines in the met data file should be 8760 and begin and end with:
```
iy     id  it  imin
2011   1   1   0 …
…
2012   1   0   0 …
```

4.4.1. SSss_YYYY_data_tt.txt¶

Main meteorological data file.

No.	Use	Column Name	Description
1	`MU`	iy	Year [YYYY]
2	`MU`	id	Day of year [DOY]
3	`MU`	it	Hour [H]
4	`MU`	imin	Minute [M]
5	`O`	qn	Net all-wave radiation [W m^-2] Required if `NetRadiationMethod` = 0.
6	`O`	qh	Sensible heat flux [W m^-2]
7	`O`	qe	Latent heat flux [W m^-2]
8	`O`	qs	Storage heat flux [W m^-2]
9	`O`	qf	Anthropogenic heat flux [W m^-2]
10	`MU`	U	Wind speed [m s-1] Height of the wind speed measurement (z) is needed in SUEWS_SiteSelect.txt.
11	`MU`	RH	Relative Humidity [%]
12	`MU`	Tair	Air temperature [°C]
13	`MU`	pres	Barometric pressure [kPa]
14	`MU`	rain	Rainfall [mm]
15	`MU`	kdown	Incoming shortwave radiation [W m^-2] Must be > 0 W m^-2.
16	`O`	snow	Snow cover fraction (0 – 1) [-] Required if `SnowUse` = 1
17	`O`	ldown	Incoming longwave radiation [W m^-2]
18	`O`	fcld	Cloud fraction [tenths]
19	`O`	Wuh	External water use [m³]
20	`O`	xsmd	Observed soil moisture [m³ m^-3] or [kg kg^-1]
21	`O`	lai	Observed leaf area index [m^-2 m^-2]
22	`O`	kdiff	Diffuse radiation [W m^-2] Recommended in this version. if `SOLWEIGUse` = 1
23	`O`	kdir	Direct radiation [W m^-2] Recommended in this version. if `SOLWEIGUse` = 1
24	`O`	wdir	Wind direction [°] Not available in this version.