Average Annual Regional Precipitation
Shapefile
Tags
ClimatologyMeteorologyAtmosphere, ISO 19115 Topic
Categories processes and phenomena of the atmoshpere, precipitation
Summary
These data are intended for
geographic display and analysis for the State of Texas, and for large regional
areas within the state. The data should be displayed and analyzed at scales
appropriate for 1:2,000,000-scale data. This feature class is a component of
TPWD 'base' data. 'Base' data includes current, statewide geospatial information
intended to provided context for mapping purposes.
Description
This data set shows polygons of average annual precipitation in the State of Texas, for the climatological period 1961-1990. Parameter-elevation Regressions on Independent Slopes Model (PRISM) derived raster data is the underlying data set from which the polygons and vectors were created. PRISM is an analytical model that uses point data and a digital elevation model (DEM) to generate gridded estimates of annual, monthly and event-based climatic parameters.
Credits
Detailed descriptions of the PRISM
raster data can be found on the Oregon State University PRISM web page at http://www.ocs.orst.edu/prism. Additional information is
available through the Natural Resources Conservation Service web pages at the
National Water and Climate Center at http://www.wcc.nrcs.usda.gov/water/climate/prism/prism.html or
through the National Cartography and Geospatial Center at http://www.ftw.nrcs.usda.gov/prism/prismdata.html. Other
source PRISM data sets are also available in Arc/INFO coverage and Arc/INFO
ASCII GRID formats from the Spatial Climate Analysis Service. See http://www.ocs.orst.edu/prism/prism_products.html for more
information. The CD-ROM's may be ordered through http://www.ftw.nrcs.usda.gov/prism/prismdata.html.
Use limitations
This data was prepared for
inclusion in the TPWD Base SDE database by Texas Parks and Wildlife Department
GIS analysts. The Texas Parks and Wildlife Department, its employees, and
personnel, make no warranty as to its accuracy. The Texas Parks and Wildlife
Department, its employees, and personnel MAKE NO WARRANTY FOR FITNESS OF USE FOR
A PARTICULAR PURPOSE EXPRESS OR IMPLIED WITH RESPECT TO THIS DATA. THIS IS NOT A
SURVEYED PRODUCT. Title 1 Part 10 Chapter 201 Rule §201.6 of the Texas
Administrative Code suggests data showing the full extent of Texas be projected
in the Texas State Mapping System. This feature class as provided by TPWD is
unprojected. No responsibility is assumed by the Spatial Climate Analysis
Service, the USDA - NRCS National Water and Climate Center, the USDA - NRCS
National Cartography and Geospatial Center, or the U.S. Geological Survey in the
use of these data.Acknowledgement of the PRISM model, the Spatial Climate
Analysis Service at Oregon State University, the Natural Resources Conservation
Service (NRCS) Water and Climate Center, the NRCS National Cartography and
Geospatial Center (NCGC), and (or) the National Atlas of the United States would
be appreciated in products derived from these data.