Metadata for Montana Average Annual Precipitation, 1961-1990
Identification Information:
- Citation:
- Originator:
- Chris Daly of Oregon State University and George Taylor of the Oregon Climate Service at Oregon State University
- Publication date: 04/1998
- Title: Montana Average Annual Precipitation, 1961-1990
- Online linkage:
http://nris.mt.gov/nsdi/nris/e00/precip.zip
- Online linkage:
http://nris.mt.gov/nsdi/nris/shape/precip.zip
- Browse graphic file name:
http://nris.mt.gov/nsdi/nris/precip.gif
- Abstract:
- This data contains vector and polygon coverages of average monthly and annual precipitation for the climatological period 1961-90. 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. Detailed descriptions of the PRISM raster data can be found with the accompanying raster data sets. For further information, the online PRISM homepage can be found at <URL:http://www.ocs.orst.edu/prism/prism_new.html>.
- Purpose:
- Display and/or analyses requiring spatially distributed monthly or annual precipitation for the climatological period 1961-90.
- Time period of content:
- Beginning date: 01/01/1961
- Ending date: 12/31/1990
- Currentness reference:
- Climatological period from which the point observations were taken.
- Status:
- Progress: Complete
- Maintenance and update frequency:
- None planned for the 1961-90 climatological period. However, this data set will most likely be updated in 2001 for the new 1971-2000 climatological period.
- Access constraints: n/a, no restrictions apply
- Use constraints:
- Acknowledgement of the following agencies in products derived from these data: Natural Resources Conservation Service (NRCS) Water and Climate Center, NRCS National Cartography and Geospatial Center (NCGC), PRISM Model, and the Oregon Climate Service at Oregon State University.
- Point of contact:
- Oregon Climate Service at Oregon State University
- Strand Ag Hall 326, Oregon Climate Service, Oregon State University
- Corvallis,
OR 97331-2209
- Telephone: 541) 737-5705
- Fax: (541) 737-5710
- E-Mail: oregon@oce.orst.edu
- Security information:
- Security classification system: none
- Security classification: Unclassified
- Security handling description: none
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Data Quality Information:
- Logical consistency report:
- Polygon and chain-node topology present. Checks were made to ensure that no two adjacent polygons are labelled with the same precipitation value. A manual spot check was made of peaks, depressions, and islands.
- Completeness report:
- Point estimates of precipitation originated from the following sources: National Weather Service Cooperative (COOP) stations, 2) Natural Resources Conservation Service (NRCS) SNOTEL, 3) local networks. All COOP station data were subjected to quality control checks by the National Climatic Data Center (NCDC).
- Lineage:
- Source information:
- Originator: National Climatic Data Center (NCDC)
- Publication date: 1991
- Title:
- U.S. National 1961-1990 Climate Normals, Climatography of the United States No. 81
- Publication place: Asheville, NC, USA
- Publisher: National Climatic Data Center (NCDC)
- Source information:
- Originator: Natural Resources Conservation Service
- Publication date: 1991
- Title:
- Cooperative Snow Survey Data of Federal - State - Private Cooperative Snow Surveys
- Series name:
- Cooperative Snow Survey Data of Federal - State - Private Cooperative Snow Surveys
- Issue identification: Annual issue for Western US states
- Publication place: Portland, OR, USA
- Publisher:
- Natural Resources Conservation Service, Water and Climate Center
- Source contribution:
- Location and values of known average monthly and annual precipitation
- Beginning date: 1961
- Ending date: 1990
- Source information:
- Originator:
- Natural Resources Conservation Service, Water and Climate Center
- Publication date: Unpublished Material
- Title: Local Precipitation monitoring networks
- Beginning date: 1961
- Ending date: 1990
- Source information:
- Originator: Defense Mapping Agency
- Publication date: 1985
- Title:
- 1:250,000-scale Digital Elevation Models (DEM) also known as 1-Degree DEM's
- Publication place: Washington, DC
- Publisher: U.S. Geological Survey
- Source contribution:
- Terrain surface input to PRISM model for estimation of precipitaion between known points.
- Calendar date: 1985
- Process step:
- Filter raster data from a resolution of 4 km to 2 km using a Gaussian filter
-
- Process date: 04/1998
- Process step: Contour 2 km raster data
-
- Process date: 04/1998
- Process step:
- Convert adjacent contour lines to areas or polygons using custom software
-
- Process date: 04/1998
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Spatial Data Organization Information:
- Point and vector object information:
- SDTS object type: Complete chain
- SDTS object count: 5310
- SDTS object type: Label point
- SDTS object count: 3474
- SDTS object type: GT-polygon composed of chains
- SDTS object count: 3474
- SDTS object type: Point
- SDTS object count: 4
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Spatial Reference Information:
- Horizontal coordinate system definition:
- Grid coordinate system name: State Plane Coordinate System
- SPCS zone identifier: 2500
- Lambert conformal conic:
- Standard parallel: 45.000000
- Standard parallel: 49.000000
- Longitude of central meridian: -109.500000
- Latitude of projection origin: 44.250000
- False easting: 600000.000000
- False northing: 0.000000
- Planar distance units: meters
- Geodetic model:
- Horizontal datum name: North American Datum of 1983
- Ellipsoid name: Geodetic Reference System 80
- Semi-major axis: 6378137.000000
- Denominator of flattening ratio: 298.257222
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Entity and Attribute Information:
- Entity type label: precip.aat
- Attribute label: FID
- Attribute definition: Internal feature number.
- Attribute label: Shape
- Attribute definition: Feature geometry.
- Attribute label: FNODE#
- Attribute definition:
- Internal node number for the beginning of an arc (from-node).
- Attribute label: TNODE#
- Attribute definition: Internal node number for the end of an arc (to-node).
- Attribute label: LPOLY#
- Attribute definition: Internal node number for the left polygon.
- Attribute label: RPOLY#
- Attribute definition: Internal node number for the right polygon.
- Attribute label: LENGTH
- Attribute definition: Length of feature in meters.
- Attribute label: PRECIP#
- Attribute definition: Internal feature number.
- Attribute label: PRECIP-ID
- Attribute definition: User-defined feature number.
- Attribute label: CONTOUR
- Attribute definition: Average annual precipitation, inches
- Attribute label: TEXT
- Attribute definition: Average annual precipitation, inches
- Attribute label: CONTOUR_TXT
- Attribute definition: Average annual precipitation, inches
- Entity type label: precip.pat
- Entity type definition:
- Polygons representing an area with a fixed value of precipitation. The precipitation value is stored as the item RANGE in the attribute table.
- Attribute label: FID
- Attribute definition: Internal feature number.
- Attribute label: Shape
- Attribute definition: Feature geometry.
- Attribute label: AREA
- Attribute definition: Area of feature in internal square meters.
- Attribute label: PERIMETER
- Attribute definition: Perimeter of feature in meters.
- Attribute label: PRECIP#
- Attribute definition: Internal feature number
- Attribute label: PRECIP-ID
- Attribute definition: User-defined feature number.
- Attribute label: RANGE
- Attribute definition:
- Precipitation value, in inches, from the Oregon Climate Service
- Attribute label: LEGEND
- Attribute definition: Bounding precipitation values in inches.
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Distribution Information:
- Distributor:
- Montana State Library
- PO Box 201800
- Helena,
MT 59620-1800
- Telephone: 406-444-6910
- E-Mail: nris@mt.gov
- Distribution liability:
- Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or misuse of the data, or for damage, transmission of viruses or computer contamination through the distribution of these data sets or for the usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.
- Standard order process:
- Digital form:
- Format name: Arc Export
- Online option:
http://nris.mt.gov/nsdi/nris/e00/precip.zip
- Digital form:
- Format name: ESRI Shape file
- Online option:
http://nris.mt.gov/nsdi/nris/shape/precip.zip
- Fees: none
- Technical prerequisites:
- Geographic data are intended for use in a Geographic Information System (GIS).
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Metadata Reference Information:
- Metadata date: 04/23/1998
- Metadata contact:
- Tye Parzybok
- Oregon Climate Service
- Strand Ag Hall 326, Oregon Climate Service, Oregon State University
- Corvallis,
OR 97331-2209
- Telephone: (541) 737-5705
- Fax: (541) 737-5710
- E-Mail: parzy@oce.orst.edu
- Metadata security information:
- Metadata security classification system: none
- Metadata security classification: Unclassified
- Metadata security handling description: none
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