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    <titleInfo>
      <title>Solar Tower and Dish Power 10km Grid, United States, 1998-2005</title>
    </titleInfo>
    <name type="corporate">
      <namePart>Hart Energy Publishing</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>Raster Dataset</form>
      <digitalOrigin>born digital</digitalOrigin>
    </physicalDescription>
    <language>
      <languageTerm authority="iso639-2b" type="code">eng</languageTerm>
    </language>
    <abstract lang="eng" displayLabel="Abstract">This raster layer contains monthly and annual average solar irradiation resource potential for the continental United States averaged over surface cells of 0.1 degrees in both latitude and longitude (about 10 km in size). This layer is a part of a collection of GIS data containing renewable and electric energy information for the U.S., including data on transmission lines, power plants and electricity substations.</abstract>
    <abstract lang="eng" displayLabel="Purpose">This raster dataset provides information on the solar resource potential for the continental United States. The insolation values represent the average solar energy available to a concentrating collector on a 2-axis tracker, such as a dish or a power tower.</abstract>
    <note lang="eng" displayLabel="Preferred citation">Hart Energy Publishing. (2015). Solar Tower and Dish Power Grid, United States, 1998-2005. Hart Energy Publishing. Available at: http://purl.stanford.edu/tj696md6011</note>
    <note displayLabel="Supplemental information">Source data was developed using the State University of New York/Albany satellite radiation model.  This model was developed by Dr. Richard Perez and collaborators at the National Renewable Energy Laboratory and other universities for the U.S. Department of Energy. Specific information about this model can be found in Perez, et al. (2002). This model uses hourly radiance images from geostationary weather satellites, daily snow cover data, and monthly averages of atmospheric water vapor, trace gases, and the amount of aerosols in the atmosphere to calculate the hourly total insolation (sun and sky) falling on a horizontal surface. Atmospheric water vapor, trace gases, and aerosols are derived from a variety of sources. A modified Bird model is used to calculate clear sky direct normal (DNI).  This is then adjusted as a function of the  ratio of clear sky global horizontal (GHI) and the model predicted GHI.   Where possible, existing ground measurement stations are used to validate the data. Nevertheless, there is uncertainty associated with the meterological input to the model, since some of the input parameters are not avalable at a 10km resolution. As a result, it is believed that the modeled values are accurate to approximately 15% of a true measured value within the grid cell. Due to terrain effects and other microclimate influences, the local cloud cover can vary significantly even within a single grid cell. Furthermore, the uncertainty of the modeled estimates increase with distance from reliable measurement sources and with the complexity of the terrain.</note>
    <note displayLabel="WGS84 Cartographics">This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.</note>
    <subject authority="lcsh" lang="eng">
      <topic authority="lcsh" authorityURI="http://id.loc.gov/authorities/subjects.html">Solar energy</topic>
    </subject>
    <subject authority="lcsh" lang="eng">
      <topic authority="lcsh" authorityURI="http://id.loc.gov/authorities/subjects.html">Solar radiation</topic>
    </subject>
    <subject authority="geonames" lang="eng">
      <geographic authority="geonames" authorityURI="http://www.geonames.org/ontology#" valueURI="http://sws.geonames.org/6252001/">United States</geographic>
    </subject>
    <subject>
      <temporal point="start" encoding="w3cdtf">1998</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="ISO19115TopicCategory">
      <topic authority="ISO19115TopicCategory" authorityURI="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_TopicCategoryCode" valueURI="imageryBaseMapsEarthCover">Imagery and Base Maps</topic>
    </subject>
    <subject>
      <cartographics>
        <scale>Scale not given.</scale>
        <projection>EPSG::4008</projection>
        <coordinates>W 125&#xB0;6&#x2B9;3&#x2BA;--W 66&#xB0;28&#x2B9;39&#x2BA;/N 49&#xB0;42&#x2B9;3&#x2BA;--N 24&#xB0;11&#x2B9;57&#x2BA;</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">2015</dateIssued>
      <dateValid encoding="w3cdtf" point="start">1998</dateValid>
      <dateValid encoding="w3cdtf" point="end">2005</dateValid>
      <place>
        <placeTerm type="text">San Diego, California, US</placeTerm>
      </place>
      <publisher>Hart Energy Publishing</publisher>
      <edition>1018 Update</edition>
    </originInfo>
    <location>
      <url usage="primary display">https://purl.stanford.edu/tj696md6011</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:tj696md6011</recordIdentifier>
    </recordInfo>
    <extension displayLabel="geo">
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        <rdf:Description rdf:about="http://purl.stanford.edu/tj696md6011">
          <dc:format>image/tiff; format=ArcGRID</dc:format>
          <dc:type>Dataset#Raster</dc:type>
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            <gml:Envelope gml:srsName="EPSG:4326">
              <gml:lowerCorner>-125.1008 24.1992</gml:lowerCorner>
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    <relatedItem type="host">
      <titleInfo>
        <title>Renewable energy GIS data : United States</title>
      </titleInfo>
      <location>
        <url>https://purl.stanford.edu/vq006xg0504</url>
      </location>
      <typeOfResource collection="yes"/>
    </relatedItem>
    <accessCondition type="useAndReproduction">These data are licensed by Stanford Libraries and are available to Stanford University affiliates only. Affiliates are limited to current faculty, staff and students. Non affiliates seeking access should contact the publisher directly. These data may not be reproduced or used for any purpose without permission.</accessCondition>
    <accessCondition type="copyright">Copyright ownership resides with the originator.</accessCondition>
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