Climate data (precipitation, minimum and maximum temperature) is needed for overland flow simulation in IGW-NET. Daily estimates of these parameters are available from the MAGNET Data Center, or the user can add "Climate Stations" with time-series climate data. (This latter approach can also be used to specify evaporation rates to be used in simulation).
Internal Data Input
This option allows the user to create one or more climate stations of a specific location (latitude, longitude) and elevation (above mean sea level) and input time-series temperature, precipitation, or evaporation data. Note that the expected parameter type for entered data depends on which tab/option section the Load Time Series Data sub-interface was launched from.Click 'Add' to create the first climate station. This opens a small menu to assign a name, location, and elevation. Then select the newly added station from the station list and click 'Edit Time Series'. A separate interface (Transient Data Input) is opened that allows the user to enter time-series climate data (time,value). Refer to the Transient Data Input help page and interface notes for expected format and units of the inputted climate data.
External Data Input
This option allows the user to upload existing climate station files and record files that are formatted to be consistent with USGS INFIL3.0. The user may refer to the USGS INFIL3.0 technical reference documentation for full details on preparing these file types. (Note that the Climate Stations File for IGW-NET refers to the Climate-Stations Information File in the INFIL3.0 documentation. Similarly, the Record File for IGW-NET refers to the Daily Climate File in the INFIL3.0 documentation.Citation, INFIL3.0 documentation:
U.S. Geological Survey, 2008, Documentation of computer program INFIL3.0—A distributed-parameter watershed model to estimate net infiltration below the root zone: U.S. Geological Survey Scientific Investigations Report 2008–5006, 98 p. ONLINE ONLY
From Data Center (USA Only)
Selecting this option will extract the daily precipitation/temperature data from the MAGNET Data Center for the specified period of simulation. The daily climate data is originally from the national (USA only) PRISM Climate database.Citation, PRISM database:
PRISM Climate Group, Oregon State University, http://prism.oregonstate.edu, created 4 Feb 2004.