GRIDDED CONUS WATER BALANCE SUMMARY LAYERS
Summary Layers for the NPS Gridded Water Balance Model
This page provides 30-year average and decadal average Water Balance GIS
layers calculated for all of the Continental United States at 1km
resolution. THERE ARE ABOUT 1700 GIS LAYERS AVAILABLE FOR DOWNLOAD FROM
THIS WEB PAGE (about 160 GB). More detailed daily and monthly data (about
24 TB) from this model can be accessed via a THREDDS server located here.
More information on how the model was calculated, the different versions
of the model, projection information, and definitions for the water
balance parameters (listed below) are available in this user guide.
Time periods included: Historical (1980 - present), and 24
futures (see below) out to late 21st century. These summary layers include
annual values averaged over the time periods indicated as well as seasonal
values for each year in the time periods indicated: Winter (December,
January, February), Spring (March, April, May), Summer (June, July,
August), and Fall (September, October, November).
Some terminology: Future data are divided into RCP 4.5 and RCP
8.5, which are emissions scenarios. More
information on RCPs is available here. Abbreviations in the filenames
indicate the General
Circulation Model (GCM) that provided the input temperature and
precipitation data for the water balance run. There are 12 GCMs x 2 RCPs =
24 futures. If you just want a single future, then use the ENSEMBLE files,
which are averages of the 12 GCMs in each RCP.
File Formats Provided Here: Geotiff. These are designed to be
opened in a GIS program like ArcGIS or QGIS. Files in the "images" folders
(jpg format) are just automatically generated previews of the GIS data.
Units for all files: Millimeters.
Use the links below to browse individual data files for each parameter.
If for some reason you want a lot of files, it will be quicker to download
the
zip-archived versions here.
/AET
/Deficit
/PET
/accumswe
/rain
/runoff
/soil_water