# Pacifc Islands (Guam) Average Monthly and Annual Precipitation, 1971 - 2000

Metadata also available as

## 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:
        Chris Daly and Mike Halbleib of the PRISM Group at Oregon State University.
      Publication_Date: 2006
      Title:
        Pacifc Islands (Guam) Average Monthly and Annual Precipitation, 1971 - 2000
      Geospatial_Data_Presentation_Form: raster digital data
      Publication_Information:
        Publication_Place: Corvallis, Oregon, USA
        Publisher: The PRISM Group at Oregon State University.
      Online_Linkage: \\ORION\F$\Island_srtm\metadata\New Folder\guam_ppt_14
  Description:
    Abstract:
      This data set contains spatially gridded average monthly and annual precipitation for the climatological period 1971-2000. Distribution of the point measurements to a spatial grid was accomplished using the PRISM model, developed by Chris Daly of the PRISM Group, OSU.
    Purpose:
      Display and/or analyses requiring spatially disributed monthly or annual precipitation for the climatological period 1971-2000
    Supplemental_Information:
      There are many methods of interpolating climate 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 climate 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 for a 30 yr climatological average (e.g. 1971- 2000 average) and an underlying grid such as a digital elevation model (DEM) to generate gridded estimates of monthly and annual precipitation and temperature (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 processes. Grids were modeled on a monthly basis. Annual grids of temperature were produced by averaging the monthly grids, and summing for precipitation. Reports and papers on PRISM can be obtained from the PRISM Group website <http://www.ocs.oregonstate.edu/prism/>
  Time_Period_of_Content:
    Time_Period_Information:
      Range_of_Dates/Times:
        Beginning_Date: 19710101
        Ending_Date: 20001231
    Currentness_Reference:
      Climatological period from which the point observations were taken.
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: None planned
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: 144.55444444528001
      East_Bounding_Coordinate: 145.02694444338999
      North_Bounding_Coordinate: 13.700833159550001
      South_Bounding_Coordinate: 13.17249982833
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: None
    Place:
      Place_Keyword: raster data
    Stratum:
      Stratum_Keyword: Precipitation
    Temporal:
      Temporal_Keyword: grid cell
  Use_Constraints:
    Acknowledgement of the following agencies in products derived from these data: The PRISM Group at Oregon State University and the National Park Service.
  Point_of_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Chris Daly or Mike Halbleib
      Contact_Address:
        Address_Type: mailing address
        Address: Strand Ag Hall 326, PRISM Group, Oregon State University
        City: Corvallis
        State_or_Province: Oregon
        Postal_Code: 97331-2209
        Country: USA
      Contact_Voice_Telephone: (541) 737-2531
      Contact_Facsimile_Telephone: (541) 737-5710
      Contact_Electronic_Mail_Address: halbleib@coas.oregonstate.edu
  Security_Information:
    Security_Classification_System: None
    Security_Classification: Unclassified
    Security_Handling_Description: None
  Native_Data_Set_Environment:
    Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.780

Data_Quality_Information:
  Logical_Consistency_Report:
    All data were based on the same averaging period (1971-2000). Similar quality assurance procedures were used with all input data sets.
  Completeness_Report:
    Point estimates of precipitation originated from some or all of the following sources: 1) National Weather Service (NWS) Cooperative (COOP) stations, 2) Natural Resources Conservation Service (NRCS) SNOTEL, 3) United States Forest Service (USFS) and Bureau of Land Management (BLM) RAWS Stations, 4) Bureau of Reclemation (AGRIMET) stations, 5) California Data Exchange Center (CDEC) stations, 6) Storage guages, 7) NRCS Snowcourse stations, 8) Other State and local station networks, 9) Estimated station data, 10) Canadian stations, 11) Upper air stations, and 12) NWS/Federal Aviation Administration (FAA) Automated surface observation stations (ASOS). All COOP station data were subjected to quality control checks by the National Climatic Data Center (NCDC). All COOP, SNOTEL and other data were subjected to further quality control checks by the PRISM Group.
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
  Lineage:
    Source_Information:
      Type_of_Source_Media: digital files
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: 19710101
            Ending_Date: 20001231
        Source_Currentness_Reference: 20001231
      Source_Contribution:
        Location and values of known average monthly and annual precipitation
    Process_Step:
    Process_Step:
      Process_Description: Metadata imported.
      Source_Used_Citation_Abbreviation: C:\DOCUME~1\halbleib\LOCALS~1\Temp\xml6F4.tmp

Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Raster
  Raster_Object_Information:
    Raster_Object_Type: Grid Cell
    Row_Count: 634
    Column_Count: 567
    Vertical_Count: 1

Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Geographic:
      Geographic_Coordinate_Units: Decimal degrees
    Planar:
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: row and column
        Coordinate_Representation:
          Abscissa_Resolution: 0.000833
          Ordinate_Resolution: 0.000833
    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

Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: Average Precipitation
    Attribute:
      Attribute_Domain_Values:
        Range_Domain:
          Attribute_Units_of_Measure: Millimeters times 100

Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Mike Halbleib
        Contact_Organization: PRISM Group
      Contact_Address:
        Address_Type: mailing address
        Address: 326 Strand Ag Hall
        City: Corvallis
        State_or_Province: Oregon
        Postal_Code: 97331
        Country: USA
      Contact_Voice_Telephone: 541-737-2531
      Contact_Electronic_Mail_Address: halbleib@coas.oregonstate.edu
  Resource_Description: Downloadable Data
  Distribution_Liability:
    This digital data set publication was prepared by the PRISM Group. Neither the PRISM Group 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 PRISM Group or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the PRISM Group or any agency thereof.
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: ARC/INFO ASCII Grid
        Transfer_Size: 2.504

Metadata_Reference_Information:
  Metadata_Date: 20061101
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: PRISM Group
        Contact_Person: Mike Halbleib
      Contact_Address:
        Address_Type: Strand Ag Hall 326, PRISM Group, Oregon State University
        City: Corvallis
        State_or_Province: Oregon
        Postal_Code: 97331-2209
      Contact_Voice_Telephone: 541-737-2531
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Time_Convention: local time
  Metadata_Extensions:
    Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
    Profile_Name: ESRI Metadata Profile
  Metadata_Extensions:
    Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
    Profile_Name: ESRI Metadata Profile

Generated by `mp` version 2.8.6 on Wed Nov 01 17:05:27 2006