Puerto Rico Average Monthly or Annual Precipitation, 1963-95

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator:

Dr. Chris Daly of the Spatial Climate Analysis Service at Oregon State University

Publication_Date: 200210

Title: Puerto Rico Average Monthly or Annual Precipitation, 1963-95

Geospatial_Data_Presentation_Form: raster digital data

Publication_Information:

Publication_Place: Corvallis, Oregon, USA

Publisher:

Spatial Climate Analysis Service at Oregon State University (SCAS/OSU)

Description:

Abstract:

This data set contains spatially gridded precipitation of average monthly and annual precipitation for the climatological period 1963-95. Distribution of the point measurements to a spatial grid was accomplished using the PRISM model, developed by Chris Daly of SCAS/OSU.

Purpose:

Display and/or analyses requiring spatially distributed monthly or annual precipitation for the climatological period 1963-95.

Supplemental_Information:

There are many methods of interpolating precipitation from monitoring stations to grid points. Some provide estimates of acceptable accuracy in flat terrain, but few have been able to adequately explain the extreme, complex variations in precipitation that occur in mountainous regions. Significant progress in this area has been achieved through the development of PRISM (Parameter-elevation Regressions on Independent Slopes Model). PRISM is an analytical model that uses point data and a digital elevation model (DEM) to generate gridded estimates of monthly and annual precipitation (as well as other climatic parameters). PRISM is well suited to regions with mountainous terrain, because it incorporates a conceptual framework that addresses the spatial scale and pattern of orographic precipitation. Precipitation was modeled monthly. An annual grid was produced by summing the monthly grids. A Gaussian filter was applied to increase the resolution of the grids from the base resolution 15 arc-seconds (~450 m) to 7.5 arc-seconds (~225 m). This filter is a modification of the Barnes filter (Barnes, 1964), originally adapted by Dr. Stephen Esbensen of Oregon State University, and later modified for use here by Wayne P. Gibson, also of Oregon State University.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19630101

Ending_Date: 19951231

Currentness_Reference:

Climatological period from which the point observations were taken.

Status:

Progress: Complete

Maintenance_and_Update_Frequency:

None planned for the 1963-95 climatological period. However, this data set may be updated at some point in time for the 1971-2000 climatological period.

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -67.317708

East_Bounding_Coordinate: -64.999329

North_Bounding_Coordinate: 18.550933

South_Bounding_Coordinate: 17.869792

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: raster data

Theme_Keyword: precipitation

Theme_Keyword: grid cell

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: Puerto Rico

Access_Constraints: Access pursuant to license agreement.

Use_Constraints: Use pursuant to license agreement.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Christopher Daly, Director, SCAS

Contact_Address:

Address_Type: mailing address

Address: Strand Ag Hall 316

Address: Spatial Climate Analysis Service

Address: Oregon State University

City: Corvallis

State_or_Province: OR

Postal_Code: 97331-2209

Country: USA

Contact_Voice_Telephone: (541) 737-5705

Contact_Facsimile_Telephone: (541) 737-5710

Contact_Electronic_Mail_Address: daly@coas.oregonstate.edu

Security_Information:

Security_Classification_System: None

Security_Classification: Unclassified

Native_Data_Set_Environment:

Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 2; ESRI ArcCatalog 8.1.2.671

Data_Quality_Information:

Attribute_Accuracy:

Logical_Consistency_Report:

All data were based on the same averaging period (1963-1995). Similar quality assurance procedures were used with all input data sets.

Completeness_Report:

Point estimates of precipitation originated from the National Weather Service Cooperative Stations (COOP). All station data were subjected to quality control checks by the Spatial Climate Analysis Service.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The horizontal accuracy of the DEM is expressed as an estimated root mean square error (RMSE). The estimate of the RMSE is based upon horizontal accuracy tests of the DEM source materials which are selected as equal to or less than intended horizontal RMSE error of the DEM. The testing of horizontal accuracy of the source materials is accomplished by comparing the planimetric (X and Y) coordinates of well-defined ground points with the coordinates of the same points as determined from a source of higher accuracy.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

A RMSE of 7-meters or less is the desired accuracy standard. A RMSE of 15-meters is the maximum permitted. A 7.5-minute DEM at this level has an absolute elevation error tolerance of 50 meters (approximately three times the 15-meter RMSE) for blunder errors for any grid node when compared to the true elevation. Any array of points in the DEM can not encompass more than 49 contiguous elevations in error by more than 21 meters (three times the 7-meter RMSE). Systematic errors that are within stated accuracy standards are tolerated.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: National Climatic Data Center (NCDC)

Publication_Date: 1996

Title: Cooperative Summary of the Day, Volume 21, TD3200

Publication_Information:

Publication_Place: Asheville, NC, USA

Publisher: National Climatic Data Center (NCDC)

Type_of_Source_Media: digital files

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19630101

Ending_Date: 19951231

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: TD3200

Source_Contribution:

Location and values of known monthly precipitation summed for the 1963-1995 period

Source_Information:

Source_Citation:

Citation_Information:

Originator: US Geologic Survey, EROS Data Center

Publication_Date: 1996

Title: 7.5-minute Digital Elevation Model (DEM)

Publication_Information:

Publication_Place: Sioux Falls, SD

Publisher: U.S. Geological Survey

Online_Linkage: <URL:http://edc.usgs.gov/glis/fgdc/dem75.html>

Type_of_Source_Media: digital files

Source_Citation_Abbreviation: DEM

Source_Contribution:

Terrain surface input to PRISM model for estimation of precipitation between known points

Process_Step:

Process_Description:

It is beyond the scope of this metadata to document the processes involved in generating spatially gridded precipitation using the PRISM model. However, the processes are documented in numerous conference proceedings and journal articles. The references can be found online at <URL:http://www.ocs.oregonstate.edu/prism>.

Process_Date: 200210

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster

Raster_Object_Information:

Raster_Object_Type: Grid Cell

Row_Count: 327

Column_Count: 1113

Vertical_Count: 1

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: .00208333333

Longitude_Resolution: .00208333333

Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1927

Ellipsoid_Name: Clarke 1866

Semi-major_Axis: 6378206.4

Denominator_of_Flattening_Ratio: 294.9786982

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: Average precipitation grid cell value

Entity_Type_Definition: ASCII values

Entity_Type_Definition_Source: Self-evident

Attribute:

Attribute_Label: Value

Attribute_Definition: Spatially gridded average precipitation

Attribute_Definition_Source:

Daly, C., R.P. Neilson, and D.L. Phillips, 1994: A Statistical-Topographic Model for Mapping Climatological Precipitation over Mountainous Terrain. J. Appl. Meteor., 33,140-158. Daly, C., W. P. Gibson, G.H. Taylor, G. L. Johnson, P. Pasteris. 2002. A knowledge-based approach to the statistical mapping of climate. Climate Research, 22, 99-113, 2002

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -9999

Enumerated_Domain_Value_Definition: no data or value outside of range domain

Enumerated_Domain_Value_Definition_Source: Spatial Climate Analysis Service PRISM Project

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 4607

Attribute_Units_of_Measure: mm

Attribute_Measurement_Resolution: 1

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Climate Source, Inc.

Contact_Address:

Address_Type: mailing address

Address: 946 NW Circle Blvd. #222

City: Corvallis

State_or_Province: OR

Postal_Code: 97330-1410

Country: United States

Contact_Voice_Telephone: (512) 693-9007

Contact_Electronic_Mail_Address: info@climatesource.com

Distribution_Liability:

This is a license agreement and not an agreement for sale. This agreement between the end user (Licensee) and The Climate Source (TCS) grants certain limited rights to use proprietary climate data (the Database) distributed by TCS. All rights not specifically granted in this agreement are reserved to TCS. Licensee acknowledges that the Database may contain some defects, errors, or inconsistencies. TCS does not warrant that the Database will meet the needs of the Licensee or that all defects can or will be corrected. TCS assumes no responsibility for decisions, judgments, or analyses which are based in any way on the Database.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: ARC/INFO ASCII Grid; XYZ; custom formats available

Transfer_Size: 0.408

Digital_Transfer_Option:

Offline_Option:

Offline_Media: CD-ROM

Recording_Format: ISO 9660

Compatibility_Information: CD ROM drive with ISO 9660 software driver

Fees: Price per CD based on products purchased

Technical_Prerequisites: CD ROM drive with ISO 9660 software driver

Metadata_Reference_Information:

Metadata_Date: 20021028

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Climate Source, Inc.

Contact_Address:

Address_Type: mailing address

Address: 946 NW Circle Blvd. #222

City: Corvallis

State_or_Province: OR

Postal_Code: 97330-1410

Country: USA

Contact_Electronic_Mail_Address: info@climatesource.com

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Security_Information:

Metadata_Security_Classification_System: None

Metadata_Security_Classification: Unclassified

Metadata_Security_Handling_Description: None

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile