WorkBlock 6 - Water Resources

Here the lists of requested variables for "WATCH WB6 Water Resources" for the long-term simulations, i.e. 30+ years, are presented. In addition, you will find information on file formats for the submitted variables for these long runs, and information on where to submit the files. NB! The files should be submitted to the Watch ftp site at IIASA!  

Table 1: Requested model output variables for the long-term simulations without human impacts (see also menu "Data format" and http://www.lmd.jussieu.fr/~polcher/ALMA). Please submit as many variables as possible!

 Variable  Description  Temporal resolution
 Precip  Precipitation rate

 Monthly

 Evap  Total evapotranspiration

 Monthly

 Qs  Surface runoff

 Monthly

 Qsb  Subsurface runoff

 Monthly

 SoilMoist  Soil moisture

 Monthly

 SWE  Snow water equivalent

 Monthly

 Dis  Simulated river discharge

 Monthly

 SurfStor  Surface water storage

 Monthly

 GroundMoist  Groundwater

 Monthly

 PotEvap  Potential evapotranspiration

 Monthly

 

Table 2: Tentative list of requested model output variables for the simulations with human impacts (in addition to those in Table 1). See also menu "Data format". Follow the links for additional information. 

 Variable  Description 

Temporal resolution

 PIrrUse  Potential irrigation water use 

Monthly

 PIrrWW  Potential irrigation water withdrawals

Monthly

 PEConv  Potential irrigation conveyance losses

Monthly

 PReturnFlow  Potential irrigation return flow

Monthly

 AIrrUse  Actual irrigation water use

Monthly

 AIrrWW  Actual irrigation water withdrawals

Monthly

 AEConv  Actual irrigation conveyance losses

Monthly

 AReturnFlow  Actual irrigation return flow

Monthly

 ResStor  Reservoir storage

Monthly

 ResRel  Reservoir release

Monthly

 

 

Table 3: Requested model output data, blue/green water terms. This list is for those submitting results for the blue/green water initiative. If you do not know what the blue/green water initiative is, you can ignore this Table, or, if you are interested, contact Jens Heinke and/or Holger Hoff (see Contacts information). See also menu "Data Format".

Variable Description  Temporal resolution    
IrrigCropUseGreen

Green water use (water consumed), cropland

 Preferrably monthly, but yearly is also OK

RainfCropUseGreen

Green water use (water consumed), cropland

 Preferrably monthly, but yearly is also OK
PastureUseGreen

Green water use (water consumed), pasture

 Preferrably monthly, but yearly is also OK
 

 

 

File naming convention and array structure

One file should include only one variable when submitting the data, and should include 10-year long reporting periods starting at e.g. 1971 and ending at e.g. 1980. Use only lowercase letters in the file names, since some netCDF viewers only accept lowercase letters in their filenames. The submitted time series of monthly data should use the following file naming convention, where setup refers to input forcings and model setup, and variablename refers to the variable names used in the ALMA convention: 

 

·      modelname_setup_variablename_monthly_yyyy_yyyy.nc, e.g.: 

      lpj_wfdnat_evap_monthly_1971_1980.nc (watch forcing data, naturalized simulations)  

 

Data are to be submitted for the area -56 to 84 degrees latitude, and from -180 to 180 degrees longitude, i.e. 280 rows and 720 cols, or 201600 grid cells totally. Write the outputs row-wise starting at -55.75 and -179.75, and ending at 83.75 and 179.75.

 

Naming convention in netCDF:

x-dimension name: lon

x-dimension units: degrees_east

y-dimension name: lat

y-dimension units: degrees_north

t-dimension name: time

t-dimension units: months since first month in file, e.g. 1981-01-01.

missing_value: 1.e+20f

 

Example of naming of variables:

Long field name: Total evapotranspiration (Use the ALMA variable description)

Short field name: Evap (Use the ALMA variable names, also for the state files!)

Field units: kg/m2s (Use the ALMA variable units)

 

 

Data submission

 

The files should be submitted to the Watch ftp site at IIASA, under the Workblock6 folder.