Abstract:
The data sets on this compact disc are a compilation of several geographic
reference data sets of interest to the global-change research community. The
data sets were chosen with input from the Global Energy and Water Cycle
Experiment (GEWEX) Continental-Scale International Project (GCIP) Data
Committee and the GCIP Hydrometeorology and Atmospheric Subpanels. The data
... sets include: locations and periods of record for stream gages, reservoir
gages, and meteorological stations; a 500-meter-resolution digital elevation
model; grid-node locations for the Eta numerical weather-prediction model; and
digital map data sets of geology, land use, streams, large reservoirs, average
annual runoff, average annual precipitation, average annual temperature,
average annual heating and cooling degree days, hydrologic units, and state and
county boundaries. Also included are digital index maps for LANDSAT scenes,
and for the U.S. Geological Survey 1:250,000, 1:100,000, and 1:24,000-scale map
series. Most of the data sets cover the conterminous United States; the
digital elevation model also includes part of southern Canada. The stream and
reservoir gage and meteorological station files cover all states having area
within the Mississippi River Basin plus that part of the Mississippi River
Basin lying within Canada. Several data-base retrievals were processed by
state, therefore many sites outside the Mississippi River Basin are included.
See: http://nsdi.usgs.gov for a complete desciption of metadata and browse
images. 
Purpose:
This is a compilation of geospatial data sets formatted for use in geographic
information systems (GIS). The data sets, sources scales, and projection were
chosen to support the global change research community; specifically the Global
Energy and Water Cycle Experiment (GEWEX) Continental-Scale International
Project (GCIP).
Supplemental_Information:
...
This metadata is for a compilation of data sets published on CD-ROM. The README
file (ftp://edcftp.cr.usgs.gov/pub/data/gcip/greds/a_readme.1st) contains
complete information on the contents of the CD-ROM. Metadata are available for
the individual data sets.
DISC ORGANIZATION
This disc complies with the ISO 9660 standard for CD-ROM discs. It is
intended for use with personal computers using the MS-DOS operating system.
The disc is compatible with UNIX, Macintosh, and VAX computers equipped with
the appropriate CD-ROM reader and software. All ASCII files, including Digital
Line Graph (DLG) files and ARC/INFO export files, use MS-DOS record delimiters
(carriage-return, line-feed). Conversion of record delimiters in these files
may be necessary for operating systems other than MS-DOS. The overall layout
of the disc is:
a_readme.1st
- basins Hydrologic units of the conterminous United States,
plus the boundary of the Mississippi River Basin
in Canada BROWSE IMAGE Metadata for USBASINS
Metadata for CANBASIN
- browse GIF images for browsing
- climate Climatography of the United States, maps of 1961-90
normal temperature, BROWSE IMAGE Metadata
normal precipitation, BROWSE IMAGE Metadata
heating degree days, BROWSE IMAGE Metadata
cooling degree days, BROWSE IMAGE Metadata
sites used for normals BROWSE IMAGE Metadata
- etamodel Grid-node locations and description of the Eta model
BROWSE IMAGE Metadata
- geology Geology of the conterminous United States at
1:2,500,000 Scale Geology BROWSE IMAGE Metadata
Faults Metadata
- maps State and county boundaries, quadrangle index maps,
conterminous United States
States Metadata
Counties BROWSE IMAGE Metadata
1:250,000 Quads BROWSE IMAGE Metadata
1:100,000 Quads BROWSE IMAGE Metadata
1:24,000 Quads:
Mississippi River Basin BROWSE IMAGE Metadata
Outside Mississippi River Basin BROWSE IMAGE Metadata
- landsat Scene boundaries for LANDSAT paths and rows,
conterminous United States and southern Canada
BROWSE IMAGE Metadata
- landuse Major land uses in the United States
BROWSE IMAGE Metadata
- resrvoir Large reservoirs of the United States
BROWSE IMAGE Metadata
- rivers U.S. Environmental Protection Agency river-reach
file (RF-1) Metadata
Northeast BROWSE IMAGE
Northwest BROWSE IMAGE
Southeast BROWSE IMAGE
Southwest BROWSE IMAGE
- runoff Average annual runoff in the United States
BROWSE IMAGE Metadata
- sites Locations of stream gages, reservoir gages, and
meteorological stations, Mississippi River Basin
Current sites Metadata
Historical sites Metadata
Current USGS Stream gages BROWSE IMAGE
Discontinued USGS Stream gages BROWSE IMAGE
Current USGS Meteorological stations BROWSE IMAGE
Discontinued USGS Meteorological stations BROWSE IMAGE
Current Non-USGS Meteorological stations BROWSE IMAGE
Discontinued Non-USGS Meteorological stations BROWSE IMAGE
- software Programs for handling map projections
and compressed files README FILE
- terrain Digital Elevation Model of the conterminous United
States and southern Canada, 500-meter resolution
BROWSE IMAGE Metadata
- xportarc ARC/INFO export files of the above data sets
DATASET_COMMENTS:
Changes and updates to the CD-ROM will appear on the GREDS
homepage at http://nsdi.usgs.gov
