<?xml version="1.0"?>
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    <titleInfo>
      <title>Solar: Average Monthly and Annual Direct Normal Irradiance Data, One-Degree Resolution of the World from NASA/SSE, 1983-2005</title>
    </titleInfo>
    <name type="corporate">
      <namePart>NASA Langley Atmospheric Sciences Data Center</namePart>
      <role>
        <roleTerm authority="marcrelator" type="text">creator</roleTerm>
      </role>
    </name>
    <genre valueURI="http://id.loc.gov/authorities/genreForms/gf2011026297" authority="lcgft">Geospatial data</genre>
    <genre valueURI="http://rdvocab.info/termList/RDAContentType/1001" authority="rdacontent">cartographic dataset</genre>
    <typeOfResource>cartographic</typeOfResource>
    <typeOfResource>software, multimedia</typeOfResource>
    <physicalDescription>
      <form>Shapefile</form>
      <extent>8.404999999999999</extent>
      <digitalOrigin>born digital</digitalOrigin>
    </physicalDescription>
    <language>
      <languageTerm authority="iso639-2b" type="code">eng</languageTerm>
    </language>
    <abstract lang="eng" displayLabel="Abstract">This polygon shapefile represents the average monthly and annual measurements (kWh/m^2/day) of solar direct normal radiation (DNI) for the entire globe. Lat/Lon values indicate the lower left corner of a 1x1 degree region. Negative values are south and west; positive values are north and east. Boundaries of the -90/-180 region are -90 to -89 (south) and -180 to -179 (west). The last region, 89/180, is bounded by 89 to 90 (north) and 179 to 180 (east). This polygon shapefile represents the average monthly and annual measurements (kWh/m^2/day) of solar direct normal radiation (DNI) for the entire globe. These data are regional averages; not point data. The source data was downloaded from the Surface Meteorology and Solar Energy (SSE) website as text files. The tabular data was then converted to the shapefile format.</abstract>
    <abstract lang="eng" displayLabel="Purpose">These data are meant to provide investors and other stakeholders with reliable, verifiable and accessible information on the solar resource potential for the data domain.</abstract>
    <note lang="eng" displayLabel="Preferred citation">NASA Langley Atmospheric Sciences Data Center. (2008) Solar: Average Monthly and Annual Direct Normal Irradiance Data, One-Degree Resolution of the World from NASA/SSE, 1983-2005. NASA Available at: http://purl.stanford.edu/fd535zg0917</note>
    <note displayLabel="Supplemental information">Spatial Extent: Global Bounding Coordinates (decimal degrees)
South: -90.00, North: 90.00, West: -180.00, East: 180.00
Co-ordinate System: Geographic, Datum: WGS84, Ellipsoid: WGS84.
Polygon shapefile with fields as defined belowID (mandatory) - I4, unique identifier for each polygon
annual (mandatory) - R4, mean annual value in (kWh/m2/day)jan, feb, mar, apr, may, jun, jul, aug, sep, oct, nov, dec (optional) - R4, mean monthly value in (kWh/m2/day)janmin, febmin, marmin, aprmin, maymin, junmin, julmin, augmin sepmin, octmin, novmin, decmin (optional) - R4, minimum monthly mean value in (kWh/m2/day)janmax, febmax, marmax, aprmax, maymax, junmax, julmax, augmax, sepmax, octmax, novmax, decmax (optional) - R4, maximum monthly mean value in (kWh/m2/day)numyears (optional) - I4, number of years used in estimate</note>
    <subject authority="lcsh" lang="eng">
      <topic authority="lcsh" authorityURI="http://id.loc.gov/authorities/subjects.html">Solar radiation</topic>
    </subject>
    <subject authority="lcsh" lang="eng">
      <topic authority="lcsh" authorityURI="http://id.loc.gov/authorities/subjects.html">Solar energy</topic>
    </subject>
    <subject authority="geonames" lang="eng">
      <geographic authority="geonames" authorityURI="http://www.geonames.org/ontology#" valueURI="http://sws.geonames.org/6295630/">Earth</geographic>
    </subject>
    <subject>
      <temporal point="start" encoding="w3cdtf">1983</temporal>
      <temporal point="end" encoding="w3cdtf">2005</temporal>
    </subject>
    <subject authority="ISO19115TopicCategory">
      <topic authority="ISO19115TopicCategory" authorityURI="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_TopicCategoryCode" valueURI="utilitiesCommunication">Utilities and Communication</topic>
    </subject>
    <subject authority="lcsh">
      <geographic>Earth (Planet)</geographic>
    </subject>
    <subject>
      <cartographics>
        <scale>Scale not given.</scale>
        <coordinates>W 180&#xB0;--E 180&#xB0;/N 90&#xB0;--S 90&#xB0;</coordinates>
      </cartographics>
    </subject>
    <subject displayLabel="WGS84" authority="EPSG" valueURI="http://opengis.net/def/crs/EPSG/0/4326">
      <cartographics>
        <projection>EPSG::4326</projection>
      </cartographics>
    </subject>
    <originInfo>
      <dateIssued encoding="w3cdtf" keyDate="yes">2008</dateIssued>
      <dateValid encoding="w3cdtf" point="start">1983</dateValid>
      <dateValid encoding="w3cdtf" point="end">2005</dateValid>
      <edition>Release 6.0</edition>
    </originInfo>
    <location>
      <url usage="primary display">https://purl.stanford.edu/fd535zg0917</url>
    </location>
    <recordInfo>
      <languageOfCataloging>
        <languageTerm authority="iso639-2b" type="code">eng</languageTerm>
      </languageOfCataloging>
      <recordContentSource>Stanford</recordContentSource>
      <recordOrigin>This record was translated from ISO 19139 to MODS v.3 using an xsl transformation.</recordOrigin>
      <recordIdentifier>edu.stanford.purl:fd535zg0917</recordIdentifier>
    </recordInfo>
    <extension displayLabel="geo">
      <rdf:RDF xmlns:gml="http://www.opengis.net/gml/3.2/" xmlns:dc="http://purl.org/dc/elements/1.1/">
        <rdf:Description rdf:about="http://purl.stanford.edu/fd535zg0917">
          <dc:format>application/x-esri-shapefile; format=Shapefile</dc:format>
          <dc:type>Dataset#Polygon</dc:type>
          <gml:boundedBy>
            <gml:Envelope gml:srsName="EPSG:4326">
              <gml:lowerCorner>-180.0 -90.0</gml:lowerCorner>
              <gml:upperCorner>180.0 90.0</gml:upperCorner>
            </gml:Envelope>
          </gml:boundedBy>
        </rdf:Description>
      </rdf:RDF>
    </extension>
    <relatedItem type="host">
      <titleInfo>
        <title>NASA Surface Meteorology and Solar Energy : Global Data Sets</title>
      </titleInfo>
      <location>
        <url>https://purl.stanford.edu/bn217rw0181</url>
      </location>
      <typeOfResource collection="yes"/>
    </relatedItem>
    <accessCondition type="useAndReproduction">This item is in the public domain.  There are no restrictions on use.</accessCondition>
    <accessCondition type="copyright">This work is in the Public Domain, meaning that it is not subject to copyright.</accessCondition>
  </mods>