NESDIS Satellite Product Keywords

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Keywords are included in all modern metadata standards and form a critical part of the foundation of many data discovery and classification systems. There are many sources for keyword lists (the Marine Metadata Interoperability Project provides a [http://www.marinemetadata.org/conventions list] of over 200). The FGDC and ISO Metadata Standards both describe keywords with a type and an authority (or thesaurus) for a particular keyword. The NASA Global Change Master DIrectory (GCMD) provides [http://gcmd.nasa.gov/Resources/valids/archives/keyword_list.html seven] controlled keyword lists. The keyword type from these three standards are:
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<table border width="50%">
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<tr><th align="center">ISO 19115</th><th align="center">FGDC CSDGM</th><th align="center">NASA GCMD</th></tr>
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<tr><td align="center">Theme</td><td align="center">Theme</td><td align="center">Science</td></tr>
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<tr><td align="center">Place</td><td align="center">Place</td><td align="center">Location</td></tr>
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<tr><td align="center">Temporal</td><td align="center">Temporal</td><td></td></tr>
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<tr><td align="center">Stratum</td><td align="center">Stratum</td><td></td></tr>
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<tr><td align="center">Discipline</td><td align="center"></td><td></td></tr>
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<tr><td align="center"></td><td align="center"></td><td align="center">Data Center</td></tr>
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<tr><td align="center"></td><td align="center"></td><td align="center">Services</td></tr>
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<tr><td align="center"></td><td align="center"></td><td align="center">Project</td></tr>
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<tr><td align="center"></td><td align="center"></td><td align="center">Instrument</td></tr>
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<tr><td align="center"></td><td align="center"></td><td align="center">Platform</td></tr>
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</table>
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Keywords for NESDIS Products are currently (10/08) in two different databases: SATPROD and the NOAA Metadata Manager and Repository (NMMR). One goal of SPEEDS is to converge these two information resources into a system that experts throughout NESDIS can create, maintain and use.
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The current situation:
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#The SATPROD Database includes measurement categories that Tom Passin and Stacy were migrating towards GCMD Science Keywords in the most recent version.
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#These Measurement Categories have two levels.
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#Most of the measurement categories match GCMD or could match GCMD.
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#Each SATPROD Datafile can only have one associated measurement category.
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#Existing metadata records in the NMMR have multiple types of keywords and multiple keywords of each type.
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#The NMMR keywords are available in FGDC and ISO formats.
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==NESDIS Product Metadata Keywords==
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FGDC Metadata records have been created for roughly 50 CLASS Products by NESDIS Product Area Leads and metadata experts at NGDC ([http://www.ngdc.noaa.gov/idb/struts/form?t=102865&s=47&d=47 search] or [http://www.ngdc.noaa.gov/idb/struts/results?op_0=s&v_0=gov.noaa.class%3A&t=102865&s=47&d=47 display all]).
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These metadata records include place (245), stratum (1), temporal (3), and theme (468) keywords from several different thesauri:<pre>
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AMS Glossary of Meteorology at http://amsglossary.allenpress.com/glossary
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CIESIN Indexing Vocabulary
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CoRIS Discovery Thesaurus at ftp://ftp.nodc.noaa.gov/pub/outgoing/CoRIS/Keywords/
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CoRIS Place Thesaurus at ftp://ftp.nodc.noaa.gov/pub/outgoing/CoRIS/Keywords/
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CoRIS Theme Thesaurus at ftp://ftp.nodc.noaa.gov/pub/outgoing/CoRIS/Keywords/
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GCMD Location Keywords at http://gcmd.nasa.gov/Resources/valids/location.html
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ISO 19115 Topic Category
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NASA/GCMD Earth Science Keywords
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NASA/GCMD Instrument Keywords at http://gcmd.nasa.gov/Resources/valids/sensors.html
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NASA/GCMD Location Keywords
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"NASA/GCMD Location Keywords at
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http://gcmd.nasa.gov/Resources/valids/location.html"
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NASA/GCMD Location Keywords at http://gcmd.nasa.gov/Resources/valids/location.html
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NetCDF Climate and Forecast (CF) Standard Name Table
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None
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http://www.oso.noaa.gov/goes/schd-sector/index.htm
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thesaurus
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</pre>
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These different thesauri address different types of needs. The GCMD Keywords are the most common, but several other theme keyword groups are also used (AMS Glossary, CIESIN, CoRIS, ISO Topic Categories). The NOAA Coral Reef Information System (CoRIS) thesauri are required by that program. The ISO Topic Categories are required by the ISO Standard. The netCDF CF Standard Names are required in netCDF files for compliance with many clients.
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The fact that all of these thesauri are being used indicates that support for multiple thesauri is a well established requirement for SPEEDS.
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==NESDIS Product Metadata Instrument Keywords==
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The NESDIS Satellite Product Database uses several standard keyword lists.
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*[http://www.ngdc.noaa.gov/idb/struts/results?t=102953&s=19&d=19  GCMD Instrument Names]
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==SATPROD Measurement Categories==
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The SATPROD Database includes measurement categories that are essentially equivalent to theme keywords. The most recent revision of the SATPROD initiated the process of harmonizing those keywords with the GCMD Science keyword list. The present measurement categories are available [http://www.ngdc.noaa.gov/idb/struts/form?t=102853&s=110&d=110 here].
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==Sensor Keywords==
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The [http://www.ngdc.noaa.gov/idb/struts/results?t=102953&s=19&d=19 GCMD Sensor Keywords] are used to describe the sensors used to make observations. The short names used in SATPROD match these keywords im many cases. There are a few that do not:
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<table border cellpadding = "3">
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<tr><th>SATPROD Name</th><th>GCMD Name</th><th>SATPROD Name</th><th>GCMD Name</th></tr>
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<tr><td>SSM/T2</td><td>SSM/T-2</td><td></td><td></td></tr>
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</table>
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==Source Keywords==
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The [http://www.ngdc.noaa.gov/idb/struts/results?t=102953&s=20&d=20 GCMD Source Keywords] are used to describe the platform used to make observations. In the SATPROD case, these are generally satellites. The short names used in SATPROD match these keywords im many cases. There are a few that do not:
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<table border cellpadding = "3">
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<tr><th>SATPROD Name</th><th>GCMD Name</th><th>SATPROD Name</th><th>GCMD Name</th></tr>
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<tr><td>DMSP F-12</td><td>DMSP 5D-2/F12</td><td>Aqua</td><td>AQUA</td></tr>
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<tr><td>DMSP F-13</td><td>DMSP 5D-2/F13</td><td>Aura</td><td>AURA</td></tr>
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<tr><td>DMSP F-14</td><td>DMSP 5D-2/F14</td><td>Terra</td><td>TERRA</td></tr>
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<tr><td>DMSP F-15</td><td>DMSP 5D-3/F15</td><td>Meteosat-5 (INDOEX)</td><td>METEOSAT-5</td></tr>
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<tr><td>DMSP F-16</td><td>DMSP 5D-3/F16</td><td>Meteosat-7 (IODC)</td><td>METEOSAT-7</td></tr>
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<tr><td>QuikSCAT</td><td>QUIKSCAT</td><td>MetOp-A</td><td>METOP-A</td></tr>
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<tr><td>FY-2C</td><td>FY-2 (?)</td></tr>
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</table>
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These changes were made by Ted 3/3/09
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Note: RADARSAT-1 and -2 have no long name in GCMD
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==Missing Satellites==
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<table border cellpadding = "3">
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<tr><th>Short Name</th><th>Long Name</th><th>Reference</th></tr>
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<tr><td>NOAA-19</td><td>National Oceanic & Atmospheric Administration-19</td><td></td></tr>
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<tr><td>DMSP F-17</td><td></td><td></td></tr>
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<tr><td>Meteosat-8 and 9</td><td></td><td></td></tr>
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<tr><td>Coriolis</td><td>Coriolis</td><td>[http://en.wikipedia.org/wiki/Coriolis_(satellite) Wikipedia] [http://npoess.noaa.gov/index.php?pg=windsat NOAA]</td></tr>
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<tr><td>Earth Probe</td><td></td><td>[http://toms.gsfc.nasa.gov/eptoms/ep_v8.html Home]</td></tr>
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<tr><td>FY-2C</td><td>Feng Yun 2 Earth Observation System</td><td>[http://www.fas.org/spp/guide/china/earth/fy-2.htm Home Page]</td></tr>
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<tr><td>Jason-2</td><td>Ocean Surface Topography Mission (OSTM)</td><td>[http://ilrs.gsfc.nasa.gov/satellite_missions/list_of_satellites/jas2_general.html Home]</td></tr>
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<tr><td>STEREO</td><td>Solar TErrestrial RElations Observatory</td><td>[http://www.nasa.gov/mission_pages/stereo/main/index.html Home]</td></tr>
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<tr><td>METOP-2/A</td><td>Meteorological Operational Satellite - 2A</td><td>[http://www.esa.int/esaCP/SEMNKWAUQPE_index_0.html Press Release]</td></tr>
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</table>
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[[Category:NESDIS Satellite Product Metadata]]
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[[Category:Metadata]]
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