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HYPE Documentation
Quick links to often-used pages:
HYPE links
HYPE OSC (model code)
HYPE Open data access
SMHI Hydrology Research Dep., main developer and maintainer of the HYPE model
Quick links to often-used pages:
HYPE OSC (model code)
HYPE Open data access
SMHI Hydrology Research Dep., main developer and maintainer of the HYPE model
This is an old revision of the document!
Relative humidity is an optional forcing data. It can be used for calculation of potential evaporation. Several of the available model options for potential evaporation depend on vapor pressures and net radiation, which may be calculated with the help of relative humidity data.
The file is located in the modeldir
folder. Relative humidity (unitless value 0-1) is given for
all time steps. The RHobs-file is read only if readhumid
is set in info.txt.
The first row is column headings. It holds a text string (e.g. 'date', no spaces allowed) for the first column, and integers in the form of station or subbasin ID numbers for the rest of the columns.
The first column is date-time. The default format is yyyy-mm-dd [HH:MM], where hour and minutes are necessary if the timestep is shorter than one day. The date-time is the beginning of the timestep. It is possible to use another date-time format: yyyymmdd[HHMM]. It is expected for all forcing files, if readformat 1
is set in info.txt.
The second to last columns are relative humidity for all stations or subbasins. The ID number (first row) may be rhobsid
or subid
. If rhobsid
is used, several subbasins may use the same relative humidity time series. subid
is defined in GeoData.txt. The order of subbasins in RHobs.txt does not have to be same as in GeoData.txt. rhobsid
may be defined in ForcKey.txt or GeoData.txt.
Example snippet of RHobs.txt file:
date 1234 1245 1990-01-01 0.7 0.75 1990-01-02 0.8 0.65 ...
RHobs_nnn.txt holds relative humidity forcing data for sequence with seqnr nnn. For seqnr 0 RHobs.txt is used.