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However, such effects are invariably short lived as SO2 is spread quickly by the prevailing wind, and is converted rapidly to sulfuric acid aerosols that do not absorb UV radiation. Stratospheric aerosol clouds can significantly enhance the back scattered radiation causing errors in the ozone vertical profile. Given the extreme spatial and temporal variability of the effects of volcanoes, it is currently not possible to design a retrieval algorithm to remove their effects from SBUV ozone data. It has, however, been possible to detect the presence of volcanic contamination in the instrument&amp;apos;s field of view and flag the retrieved data. Two volcano checks have been implemented. One of these estimates the amount of SO2 present in the instrument&amp;apos;s field of view and flags the data if total ozone is suspected to be in error by at least 5%. An index called the sulfur dioxide index (SOI) is also computed that provides a measurement (as yet, uncalibrated) of SO2 contamination. The other check is meant primarily for the detection of high level aerosols which affect SBUV ozone profiles. A volcano contamination index (VCI) is derived that measures the strength of this contamination. Although error analysis studies are still not complete, empirical evidence suggest that SBUV profiles which pass the check should have errors of no more than 5% between 7 and 40 mb. Above the altitude of 7 mb, effects of aerosol are generally negligible even when large quantities of aerosol are present in the lower altitudes. Therefore, SBUV profile data above 7 mb can be used even though they are flagged for volcano contamination. Similarly, total columnar ozone derived from SBUV are generally not in significant error even when large quantities of aerosols are present. Error Codes are provided in the PMF which can give indication as to potential problems with either total or profile ozone: Total Ozone: 0 - Low path length, good scan, 1 - High path length, good scan, 2 - Very high path, good scan, 3 - Spare, 4 - Inconsistency between best ozone and the largest weighted ozone pair, 5 - Difference between best ozone and total zone for profile greater than three sigma, 6 - Spare, 7 - Photometer reflectivity and monochrometer reflectivity differ by more than 0.15, 8 - Best reflectivity out of range (less than -0.05 or greater than 1.05), 9 - A-pair, B-pair or C-pair ozone exceeds the dynamic range of the tables. The dynamic ranges are: Latitude &amp;lt; 15 deg - 180-350 DU, Latitude 15-45 deg - 180-600 DU, Latitude &amp;gt; 45 deg - 180-650 DU. Profile Ozone: 0 - No error, 1 - Lower level anomaly, 2 - Inconsistency between best ozone and profile total ozone, 3 - Final residue greater than 3 sigma, 4 - Measured Q-value calculated with a priori profile and multiple-scattering/reflectivity correction, 5 - C greater than 3.0 DU or less than 0.5 DU, 6 - Sigma greater than 0.8 or less than 0.3, 7 - Reflectivity is less than -0.05, greater than 1.05, or changes by more than 0.05 from wavelength to wavelength, 8 - Total ozone not available or in-band stray light contamination, 9 - Bad radiance or eclipse contamination, 10 - 19 Same as above except in descending mode.</gco:CharacterString>
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              <gmd:value gco:nilReason="inapplicable" />
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                <gco:CharacterString>The PMF is created from the daily SBUV/2 1B dataset. Daily PMF products are accumulated to produce archival calendar month products.</gco:CharacterString>
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              <gmd:processor>
                <gmd:CI_ResponsibleParty>
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                    <gco:CharacterString>Donna McNamara</gco:CharacterString>
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                    <gco:CharacterString>Ozone Product Area Lead</gco:CharacterString>
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                              <gmd:date>
                                <gco:Date>1997-03-01</gco:Date>
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                            <gco:CharacterString>Revision 3</gco:CharacterString>
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                          <gmd:citedResponsibleParty xlink:title="DOC/NOAA/NESDIS &gt; National Environmental Satellite Data and Information Service, NOAA, U.S. Department of Commerce">
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                                    <gmd:CI_Address>
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                                        <gco:CharacterString>1335 East-West Highway, SSMC1, 8th Floor</gco:CharacterString>
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                          </gmd:citedResponsibleParty>
                          <gmd:citedResponsibleParty xlink:title="DOC/NOAA/NESDIS &gt; National Environmental Satellite Data and Information Service, NOAA, U.S. Department of Commerce">
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                                  <gmd:phone>
                                    <gmd:CI_Telephone>
                                      <gmd:voice>
                                        <gco:CharacterString>301-713-3578</gco:CharacterString>
                                      </gmd:voice>
                                      <gmd:facsimile>
                                        <gco:CharacterString>301-713-1249</gco:CharacterString>
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                                    </gmd:CI_Telephone>
                                  </gmd:phone>
                                  <gmd:address>
                                    <gmd:CI_Address>
                                      <gmd:deliveryPoint>
                                        <gco:CharacterString>1335 East-West Highway, SSMC1, 8th Floor</gco:CharacterString>
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                                      <gmd:city>
                                        <gco:CharacterString>Silver Spring</gco:CharacterString>
                                      </gmd:city>
                                      <gmd:administrativeArea>
                                        <gco:CharacterString>MD</gco:CharacterString>
                                      </gmd:administrativeArea>
                                      <gmd:postalCode>
                                        <gco:CharacterString>20910</gco:CharacterString>
                                      </gmd:postalCode>
                                      <gmd:country>
                                        <gco:CharacterString>USA</gco:CharacterString>
                                      </gmd:country>
                                    </gmd:CI_Address>
                                  </gmd:address>
                                </gmd:CI_Contact>
                              </gmd:contactInfo>
                              <gmd:role>
                                <gmd:CI_RoleCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="originator">originator</gmd:CI_RoleCode>
                              </gmd:role>
                            </gmd:CI_ResponsibleParty>
                          </gmd:citedResponsibleParty>
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                            <gco:CharacterString>Prepared by SASC Technologies Inc. as part of NOAA Contract NA-83-SAC-00063.A large portion of the Users Guide is available online at http://www.ncdc.noaa.gov/oa/pod-guide/ncdc/docs/klm/html/c9/sec9-7.htm. For a complete copy of the document, contact Donna McNamara.</gco:CharacterString>
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                        </gmd:CI_Citation>
                      </gmi:citation>
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                        <gco:CharacterString>Algorithm: SBUV/2 Ozone</gco:CharacterString>
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                  <gmi:algorithm>
                    <gmi:LE_Algorithm>
                      <gmi:citation>
                        <gmd:CI_Citation>
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                            <gco:CharacterString>Solar Backscatter Ultraviolet Instrument (SBUV/2) Version 8 Ozone Retrieval Algorithm Theoretical Basis Document (V8 ATBD)</gco:CharacterString>
                          </gmd:title>
                          <gmd:date>
                            <gmd:CI_Date>
                              <gmd:date>
                                <gco:Date>2007-02-02</gco:Date>
                              </gmd:date>
                              <gmd:dateType>
                                <gmd:CI_DateTypeCode codeList="http://www.ngdc.noaa.gov/metadata/published/xsd/schema/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="publication">publication</gmd:CI_DateTypeCode>
                              </gmd:dateType>
                            </gmd:CI_Date>
                          </gmd:date>
                          <gmd:identifier>
                            <gmd:MD_Identifier>
                              <gmd:code>
                                <gco:CharacterString>Algorithm Change History</gco:CharacterString>
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                            </gmd:MD_Identifier>
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                          <gmd:citedResponsibleParty>
                            <gmd:CI_ResponsibleParty>
                              <gmd:organisationName>
                                <gco:CharacterString>DOC/NOAA/NESDIS &gt; National Environmental Satellite Data and Information Service, NOAA, U.S. Department of Commerce</gco:CharacterString>
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                              <gmd:contactInfo>
                                <gmd:CI_Contact>
                                  <gmd:phone>
                                    <gmd:CI_Telephone>
                                      <gmd:voice>
                                        <gco:CharacterString>301-713-3578</gco:CharacterString>
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                                      <gmd:facsimile>
                                        <gco:CharacterString>301-713-1249</gco:CharacterString>
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                                  </gmd:phone>
                                  <gmd:address>
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                        <gco:CharacterString>Beginning in 2007, a revised SBUV/2 algorithm was implemented, called Version 8. For a detailed description of the Version 8 algorithm, refer to the Algorighm Theoretical Basis Document. At that time, the Version 6 monthly PMF file described here became
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            </gmi:LE_ProcessStep>
          </gmd:processStep>
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                      <gmd:date>
                        <gco:Date>1985-03-14</gco:Date>
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                      <gmd:dateType>
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  <gmd:dataQualityInfo>
    <gmd:DQ_DataQuality>
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        <gmd:DQ_Scope>
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            <gmd:MD_ScopeCode codeList="http://www.ngdc.noaa.gov/metadata/published/xsd/schema/resources/Codelist/gmxCodelists.xml#MD_ScopeCode" codeListValue="dataset" />
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            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>TIROS-N launched. Instruments: AVHRR and TOVS.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1978-10-13T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>TIROS-N began operations</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1978-10-19T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>TIROS-N ended operations</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1980-01-30T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-6 launched.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1979-06-27T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-6 ended operations</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1986-11-16T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-7 launched</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1981-06-23T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA 7 began operations</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1981-08-19T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-7 ended operations</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1986-06-07T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-8 (NOAA-E) launched.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1983-03-28T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-8 began operations</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1983-06-20T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-8 ended operations</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1985-10-31T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-9 (NOAA-F) launched.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1984-12-12T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-9 began operations</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1985-02-25T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-9 ended operations</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1988-11-07T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-10 (NOAA-G) launched.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1986-09-17T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-10 began operations</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1986-11-17T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-10 ended operations</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1991-09-16T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-11 (NOAA-H) launched.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1988-09-24T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-11 began operations</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1988-11-08T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-11 ended operations</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1995-04-11T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-12 (NOAA-D) launched and began operations. Instruments: AVHRR/2, DCS/2, HIRS/2, MSU, SEM (POES)/2.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1991-05-14T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-12 ended operations.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1998-12-14T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-12 decommissioned.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>2007-08-10T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-13 (NOAA-I) launched and began operations.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1993-08-09T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-13 ended operations.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1993-08-21T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-14 (NOAA-J) launched. Instruments: AVHRR/2, DCS/2, HIRS/2, MSU, SARSAT, SBUV/2, SEM/1 and SSU.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1994-12-30T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-14 began operations.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1995-04-11T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-14 decommissioned.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>2007-05-23T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-15 (NOAA-K) launched. Instruments: AMSU-A1, AMSU-A2, AMSU-B, AVHRR/3, DCS/2, HIRS/3, SARSAT and SEM/2.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1998-05-13T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-15 began operations.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>1998-12-15T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-16 (NOAA-L) launched. Instruments: AMSU-A1, AMSU-A2, AMSU-B, AVHRR/3, HIRS/3, SARSAT, SBUV/2 and SEM/2.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>2000-09-21T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-16 began operations.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>2001-03-20T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-17 (NOAA-M) launched. Instruments: AMSU-A1, AMSU-A2, AMSU-B, AVHRR/3, DCS/2, HIRS/3, SARSAT, SBUV/2 and SEM/2.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>2002-06-24T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-17 began operations.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>2002-10-15T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-18 (NOAA-N) launched. Instruments: AMSU-A1, AMSU-A2, AVHRR/3, DCS/2, HIRS/4, MHS, SARSAT, SBUV/2 and SEM/2.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>2005-05-20T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-18 began operations.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>2005-08-30T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>METOP-A launched. Instruments: A-DCS, AMSU-A, ASCAT, AVHRR/3, GOME-2, GRAS, HIRS/4, IASI, MHS, SARP-3, SARR and SEM-2.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>2006-10-19T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>METOP-A operational.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>2007-05-21T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-19 (NOAA-N Prime) launched. Instruments: A-DCS, AMSU-A1, AMSU-A2, AVHRR/3, DDR, HIRS/4, MHS, SAR, SBUV/2, SEM-2</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>2009-02-06T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmd:LI_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA-19 operational</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>2009-06-02T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmd:LI_ProcessStep>
          </gmd:processStep>
        </gmd:LI_Lineage>
      </gmd:lineage>
    </gmd:DQ_DataQuality>
  </gmd:dataQualityInfo>
  <gmd:metadataConstraints>
    <gmd:MD_LegalConstraints>
      <gmd:useLimitation>
        <gco:CharacterString>Disclaimer - While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure
          of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.</gco:CharacterString>
      </gmd:useLimitation>
    </gmd:MD_LegalConstraints>
  </gmd:metadataConstraints>
  <gmd:metadataMaintenance>
    <gmd:MD_MaintenanceInformation>
      <gmd:maintenanceAndUpdateFrequency>
        <gmd:MD_MaintenanceFrequencyCode codeList="http://www.ngdc.noaa.gov/metadata/published/xsd/schema/resources/Codelist/gmxCodelists.xml#MD_MaintenanceFrequencyCode" codeListValue="asNeeded" />
      </gmd:maintenanceAndUpdateFrequency>
      <gmd:dateOfNextUpdate>
        <gco:Date>2009-06-17</gco:Date>
      </gmd:dateOfNextUpdate>
      <gmd:maintenanceNote>
        <gco:CharacterString>This record was translated from FGDC in the NMMR on 2009-12-29 20:04:35.0. Last Review: 20080617</gco:CharacterString>
      </gmd:maintenanceNote>
    </gmd:MD_MaintenanceInformation>
  </gmd:metadataMaintenance>
  <gmi:acquisitionInformation>
    <gmi:MI_AcquisitionInformation>
      <gmi:instrument xlink:title="SBUV/2">
        <gmi:MI_Instrument xmlns:gmx="http://www.isotc211.org/2005/gmx" xmlns:gsr="http://www.isotc211.org/2005/gsr" xmlns="http://www.isotc211.org/2005/gmi" xsi:schemaLocation="http://www.isotc211.org/2005/gmi http://www.ngdc.noaa.gov/metadata/published/xsd/schema.xsd" uuid="8293FAD4B86775F2E040AC8C5AB4576F">
          <gmi:citation>
            <gmd:CI_Citation>
              <gmd:title>
                <gco:CharacterString>NOAA KLM User's Guide, Solar Backscatter Ultraviolet Spectral Radiometer (SBUV/2), Section 3.8</gco:CharacterString>
              </gmd:title>
              <gmd:date>
                <gmd:CI_Date>
                  <gmd:date>
                    <gco:Date>2000-09</gco:Date>
                  </gmd:date>
                  <gmd:dateType>
                    <gmd:CI_DateTypeCode codeList="http://www.ngdc.noaa.gov/metadata/published/xsd/schema/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="publication">publication</gmd:CI_DateTypeCode>
                  </gmd:dateType>
                </gmd:CI_Date>
              </gmd:date>
              <gmd:edition>
                <gco:CharacterString>revision</gco:CharacterString>
              </gmd:edition>
              <gmd:identifier>
                <gmd:MD_Identifier>
                  <gmd:code>
                    <gco:CharacterString>gov.noaa.ngdc.fgdccitation:23315</gco:CharacterString>
                  </gmd:code>
                </gmd:MD_Identifier>
              </gmd:identifier>
              <gmd:citedResponsibleParty>
                <gmd:CI_ResponsibleParty>
                  <gmd:individualName>
                    <gco:CharacterString>Goodrum, Geoffrey (ed.)</gco:CharacterString>
                  </gmd:individualName>
                  <gmd:role>
                    <gmd:CI_RoleCode codeList="http://www.ngdc.noaa.gov/metadata/published/xsd/schema/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="originator">originator</gmd:CI_RoleCode>
                  </gmd:role>
                </gmd:CI_ResponsibleParty>
              </gmd:citedResponsibleParty>
              <gmd:citedResponsibleParty>
                <gmd:CI_ResponsibleParty>
                  <gmd:individualName>
                    <gco:CharacterString>Kidwell, Katherine B. (ed.)</gco:CharacterString>
                  </gmd:individualName>
                  <gmd:role>
                    <gmd:CI_RoleCode codeList="http://www.ngdc.noaa.gov/metadata/published/xsd/schema/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="originator">originator</gmd:CI_RoleCode>
                  </gmd:role>
                </gmd:CI_ResponsibleParty>
              </gmd:citedResponsibleParty>
              <gmd:citedResponsibleParty>
                <gmd:CI_ResponsibleParty>
                  <gmd:individualName>
                    <gco:CharacterString>Winston, Wayne (ed.)</gco:CharacterString>
                  </gmd:individualName>
                  <gmd:role>
                    <gmd:CI_RoleCode codeList="http://www.ngdc.noaa.gov/metadata/published/xsd/schema/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="originator">originator</gmd:CI_RoleCode>
                  </gmd:role>
                </gmd:CI_ResponsibleParty>
              </gmd:citedResponsibleParty>
              <gmd:citedResponsibleParty>
                <gmd:CI_ResponsibleParty>
                  <gmd:individualName>
                    <gco:CharacterString>DOC/NOAA/NESDIS &gt; National Environmental Satellite, Data and Information Service, NOAA, U.S. Department of Commerce</gco:CharacterString>
                  </gmd:individualName>
                  <gmd:role>
                    <gmd:CI_RoleCode codeList="http://www.ngdc.noaa.gov/metadata/published/xsd/schema/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="publisher">publisher</gmd:CI_RoleCode>
                  </gmd:role>
                </gmd:CI_ResponsibleParty>
              </gmd:citedResponsibleParty>
            </gmd:CI_Citation>
          </gmi:citation>
          <gmi:citation>
            <gmd:CI_Citation>
              <gmd:title>
                <gco:CharacterString>NOAA KLM User's Guide, Section 7.4, SBUV/2</gco:CharacterString>
              </gmd:title>
              <gmd:date>
                <gmd:CI_Date>
                  <gmd:date>
                    <gco:Date>2000-09</gco:Date>
                  </gmd:date>
                  <gmd:dateType>
                    <gmd:CI_DateTypeCode codeList="http://www.ngdc.noaa.gov/metadata/published/xsd/schema/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="publication">publication</gmd:CI_DateTypeCode>
                  </gmd:dateType>
                </gmd:CI_Date>
              </gmd:date>
              <gmd:edition>
                <gco:CharacterString>revision</gco:CharacterString>
              </gmd:edition>
              <gmd:identifier>
                <gmd:MD_Identifier>
                  <gmd:code>
                    <gco:CharacterString>gov.noaa.ngdc.fgdccitation:23350</gco:CharacterString>
                  </gmd:code>
                </gmd:MD_Identifier>
              </gmd:identifier>
              <gmd:citedResponsibleParty>
                <gmd:CI_ResponsibleParty>
                  <gmd:individualName>
                    <gco:CharacterString>Goodrum, Geoffrey (ed.)</gco:CharacterString>
                  </gmd:individualName>
                  <gmd:role>
                    <gmd:CI_RoleCode codeList="http://www.ngdc.noaa.gov/metadata/published/xsd/schema/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="originator">originator</gmd:CI_RoleCode>
                  </gmd:role>
                </gmd:CI_ResponsibleParty>
              </gmd:citedResponsibleParty>
              <gmd:citedResponsibleParty>
                <gmd:CI_ResponsibleParty>
                  <gmd:individualName>
                    <gco:CharacterString>Kidwell, Katherine B. (ed.)</gco:CharacterString>
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                    <gco:CharacterString>Winston, Wayne (ed.)</gco:CharacterString>
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                    <gco:CharacterString>DOC/NOAA/NESDIS &gt; National Environmental Satellite, Data and Information Service, NOAA, U.S. Department of Commerce</gco:CharacterString>
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                        <gco:Date>2007-04</gco:Date>
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                                <gmd:URL>http://gcmd.gsfc.nasa.gov/Resources/valids/archives/keyword_list.html</gmd:URL>
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                                <gco:CharacterString>http</gco:CharacterString>
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                                <gco:CharacterString>web browser</gco:CharacterString>
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                                <gco:CharacterString>Thesuarus for earth science keywords and associated directories hosted and maintained by NASA.</gco:CharacterString>
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                              <gmd:function>
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                <gco:CharacterString>POES &gt; Polar-orbiting Operational Environmental Satellites</gco:CharacterString>
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          </gmi:identifier>
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          <gmi:parentOperation gco:nilReason="inapplicable" />
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      <gmi:platform xlink:title="NOAA-16">
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                        <gco:CharacterString>NOAA / NESDIS Office of Satellite Operations, NSOF Bldg. 4231 Suitland Road</gco:CharacterString>
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                        <gco:CharacterString>Suitland</gco:CharacterString>
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                <gmd:CI_RoleCode codeList="http://www.ngdc.noaa.gov/metadata/published/xsd/schema/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="sponsor">sponsor</gmd:CI_RoleCode>
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            </gmd:CI_ResponsibleParty>
          </gmi:sponsor>
          <gmi:sponsor xlink:title="NASA/GSFC &gt; Goddard Space Flight Center, NASA">
            <gmd:CI_ResponsibleParty xsi:schemaLocation="http://www.isotc211.org/2005/gmi http://www.ngdc.noaa.gov/metadata/published/xsd/schema.xsd" uuid="86832756-32D8-46E2-E040-0AC8C5AB43743">
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                      <gmd:deliveryPoint>
                        <gco:CharacterString>NASA Goddard Space Flight Center</gco:CharacterString>
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                      <gmd:city>
                        <gco:CharacterString>Greenbelt</gco:CharacterString>
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                      <gmd:administrativeArea>
                        <gco:CharacterString>MD</gco:CharacterString>
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                        <gco:CharacterString>20771</gco:CharacterString>
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                        <gco:CharacterString>USA</gco:CharacterString>
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                      <gmd:electronicMailAddress>
                        <gco:CharacterString>daacuso@daac.gsfc.nasa.gov</gco:CharacterString>
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                    <gco:CharacterString>9 AM to 5 PM ET</gco:CharacterString>
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                <gmd:CI_RoleCode codeList="http://www.ngdc.noaa.gov/metadata/published/xsd/schema/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="sponsor">sponsor</gmd:CI_RoleCode>
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            </gmd:CI_ResponsibleParty>
          </gmi:sponsor>
          <gmi:instrument xlink:title="AVHRR/3 &gt; Advanced Very High Resolution Radiometer/3">
            <gmi:MI_Instrument xsi:schemaLocation="http://www.isotc211.org/2005/gmi http://www.ngdc.noaa.gov/metadata/published/xsd/schema.xsd" uuid="8293FAD4B86475F2E040AC8C5AB4576F">
              <gmi:citation>
                <gmd:CI_Citation>
                  <gmd:title>
                    <gco:CharacterString>The Advanced Very High Resolution Radiometer</gco:CharacterString>
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                    <gmd:CI_Date>
                      <gmd:date>
                        <gco:Date>1997</gco:Date>
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                      <gmd:dateType>
                        <gmd:CI_DateTypeCode codeList="http://www.ngdc.noaa.gov/metadata/published/xsd/schema/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="publication">publication</gmd:CI_DateTypeCode>
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                    <gmd:CI_ResponsibleParty>
                      <gmd:individualName>
                        <gco:CharacterString>Cracknell, Arthur P.</gco:CharacterString>
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                        <gco:CharacterString>Taylor &amp; Francis</gco:CharacterString>
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              <gmi:citation>
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                    <gco:CharacterString>NOAA KLM User's Guide, Section 3.1, Advanced Very High Resolution Radiometer/3 (AVHRR/3)</gco:CharacterString>
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                      <gmd:date>
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                        <gco:CharacterString>Goodrum, Geoffrey (ed.)</gco:CharacterString>
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                        <gco:Date>2004-09-08</gco:Date>
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                          <gmd:phone>
                            <gmd:CI_Telephone>
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                                <gco:CharacterString>+49(0)6151-807 7</gco:CharacterString>
                              </gmd:voice>
                              <gmd:facsimile>
                                <gco:CharacterString>+49(0)6151-807 555</gco:CharacterString>
                              </gmd:facsimile>
                            </gmd:CI_Telephone>
                          </gmd:phone>
                          <gmd:address>
                            <gmd:CI_Address>
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          <gmi:instrument xlink:title="AMSU-B &gt; Advanced Microwave Sounding Unit B">
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                  <gmd:date>
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                      <gmd:dateType>
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              <gmi:description>
                <gco:CharacterString>Instrument Type: sounder, Operational Mode: cross-track, Collection Type: continuous line scanning, Other Information: AMSU-B is a 5 channel cross-track, continuous line scanning, total power microwave radiometer. The instrument has an instantaneous field-of-view of 1.1            degrees. Spatial resolution at nadir is nominally 16 km (9.94 mi). The antenna provides a cross-track scan, scanning +48.95 degrees (-48.95 degrees) from nadir with a total of 90 Earth fields-of-view per scan line. This instrument completes one scan every 8/3            seconds.</gco:CharacterString>
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            </gmi:MI_Instrument>
          </gmi:instrument>
          <gmi:instrument xlink:title="SBUV/2 &gt; Solar Backscattered Ultraviolet Radiometer/2">
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                  <gmd:date>
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                      <gmd:date>
                        <gco:Date>2000-09</gco:Date>
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              <gmi:description>
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            </gmi:MI_Instrument>
          </gmi:instrument>
          <gmi:instrument xlink:title="SEM-2 &gt; Space Environment Monitor-2">
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                    <gmd:CI_Date>
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                        <gco:CharacterString>Goodrum, Geoffrey (ed.)</gco:CharacterString>
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                        <gco:CharacterString>Winston, Wayne (ed.)</gco:CharacterString>
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                        <gco:CharacterString>NOAA / NESDIS Office of Satellite Operations, NSOF Bldg. 4231 Suitland Road</gco:CharacterString>
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                        <gco:CharacterString>USA</gco:CharacterString>
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            </gmd:CI_ResponsibleParty>
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          <gmi:sponsor xlink:title="NASA/GSFC &gt; Goddard Space Flight Center, NASA">
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                        <gco:CharacterString>NASA Goddard Space Flight Center</gco:CharacterString>
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                        <gco:CharacterString>Greenbelt</gco:CharacterString>
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                        <gco:CharacterString>MD</gco:CharacterString>
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                        <gco:CharacterString>20771</gco:CharacterString>
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                        <gco:CharacterString>USA</gco:CharacterString>
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                        <gco:CharacterString>daacuso@daac.gsfc.nasa.gov</gco:CharacterString>
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                    <gco:CharacterString>9 AM to 5 PM ET</gco:CharacterString>
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          <gmi:instrument xlink:title="AVHRR/2 &gt; Advanced Very High Resolution Radiometer/2">
            <gmi:MI_Instrument xsi:schemaLocation="http://www.isotc211.org/2005/gmi http://www.ngdc.noaa.gov/metadata/published/xsd/schema.xsd" uuid="8293FAD4B89A75F2E040AC8C5AB4576F">
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                  <gmd:title>
                    <gco:CharacterString>The Advanced Very High Resolution Radiometer</gco:CharacterString>
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                      <gmd:date>
                        <gco:Date>1997</gco:Date>
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                        <gmd:CI_DateTypeCode codeList="http://www.ngdc.noaa.gov/metadata/published/xsd/schema/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="publication">publication</gmd:CI_DateTypeCode>
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                        <gco:CharacterString>gov.noaa.ngdc.fgdccitation:26722</gco:CharacterString>
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                        <gco:CharacterString>Cracknell, Arthur P.</gco:CharacterString>
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                        <gco:CharacterString>Taylor &amp; Francis</gco:CharacterString>
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                      <gmd:date>
                        <gco:Date>1998-11</gco:Date>
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          <gmi:instrument xlink:title="HIRS/2 &gt; High Resolution Infrared Radiation Sounder/2">
            <gmi:MI_Instrument xsi:schemaLocation="http://www.isotc211.org/2005/gmi http://www.ngdc.noaa.gov/metadata/published/xsd/schema.xsd" uuid="8293FAD4B88875F2E040AC8C5AB4576F">
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                      <gmd:date>
                        <gco:Date>1998-11</gco:Date>
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                        <gco:CharacterString>Kidwell, Katherine B. (comp. and ed.)</gco:CharacterString>
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                    <gco:CharacterString>HIRS/2 &gt; High Resolution Infrared Radiation Sounder/2</gco:CharacterString>
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              <gmi:description>
                <gco:CharacterString>Instrument Type: sounder, Operational Mode: cross-track, Collection Type: continuous scan, Other Information: The IFOV of the HIRS/2 channels are stepped across the satellite track by use of a rotating mirror. This cross-track scan, combined with the satellite's motion in orbit, will provide coverage of a major portion of the Earth's surface.</gco:CharacterString>
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          </gmi:instrument>
          <gmi:instrument xlink:title="MSU &gt; Microwave Sounding Unit">
            <gmi:MI_Instrument xsi:schemaLocation="http://www.isotc211.org/2005/gmi http://www.ngdc.noaa.gov/metadata/published/xsd/schema.xsd" uuid="8293FAD4B89175F2E040AC8C5AB4576F">
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                    <gco:CharacterString>NOAA Polar Orbiter Data User's Guide. Section 4.3, MSU Data</gco:CharacterString>
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                        <gco:Date>1998-11</gco:Date>
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                <gco:CharacterString>Instrument Type: sounder, Operational Mode: cross-track, Collection Type: continuous line scanning, Other Information: MHS is a 5 channel cross-track, continuous line scanning, total power microwave radiometer. The instrument has an instantaneous field-of-view of 1.11            degrees. Spatial resolution at nadir is nominally 17 km (10.56 mi). The antenna provides a cross-track scan, scanning +50 degrees (-50 degrees) from nadir with a total of 90 Earth fields-of-view per scan line. This instrument completes one scan every 8/3 seconds.</gco:CharacterString>
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                        <gco:CharacterString>Goodrum, Geoffrey (ed.)</gco:CharacterString>
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                        <gco:CharacterString>Kidwell, Katherine B. (ed.)</gco:CharacterString>
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                        <gco:CharacterString>Winston, Wayne (ed.)</gco:CharacterString>
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                        <gco:CharacterString>DOC/NOAA/NESDIS &gt; National Environmental Satellite, Data and Information Service, NOAA, U.S. Department of Commerce</gco:CharacterString>
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          <gmi:instrument xlink:title="SEM-2 &gt; Space Environment Monitor-2">
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                        <gco:Date>2000-09</gco:Date>
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                        <gco:CharacterString>Winston, Wayne (ed.)</gco:CharacterString>
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          <gmi:sponsor xlink:title="NASA/GSFC &gt; Goddard Space Flight Center, NASA">
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                        <gco:CharacterString>daacuso@daac.gsfc.nasa.gov</gco:CharacterString>
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                    <gco:CharacterString>9 AM to 5 PM ET</gco:CharacterString>
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          <gmi:instrument xlink:title="AVHRR/2 &gt; Advanced Very High Resolution Radiometer/2">
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                        <gco:CharacterString>DOC/NOAA/NESDIS &gt; National Environmental Satellite, Data and Information Service, NOAA, U.S. Department of Commerce</gco:CharacterString>
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          <gmi:instrument xlink:title="SEM-2 &gt; Space Environment Monitor-2">
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                        <gco:CharacterString>USA</gco:CharacterString>
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          </gmi:sponsor>
          <gmi:sponsor xlink:title="NASA/GSFC &gt; Goddard Space Flight Center, NASA">
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                        <gco:CharacterString>Greenbelt</gco:CharacterString>
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                        <gco:CharacterString>USA</gco:CharacterString>
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                        <gco:CharacterString>daacuso@daac.gsfc.nasa.gov</gco:CharacterString>
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                    <gco:CharacterString>9 AM to 5 PM ET</gco:CharacterString>
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          <gmi:instrument xlink:title="AVHRR/2 &gt; Advanced Very High Resolution Radiometer/2">
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                <gco:CharacterString>Instrument Type: imager (scanning monochromator) and sounder (a cloud cover radiometer), Operational Mode: Discrete mode, sweep mode or diffuser plate mode., Collection Type: nonspatial scanning, Other Information: The SBUV/2 is a nadir pointing nonspatial scanning            instrument sensitive to radiation in the 160 nm to 400 nm ultraviolet spectrum. The SBUV/2 instruments on the TIROS-N satellites are designed to measure the total ozone in a vertical column beneath the satellite and its distribution with height in the atmosphere. The SBUV/2 contains a            scanning double monochromator and a cloud cover radiometer (CCR) designed to measure ultraviolet (UV) spectral intensities. In its primary mode of operation, the monochromator measures solar radiation backscatter by the atmosphere in 12 discrete wavelength bands in the near-UV, ranging            from 252.0 to 339.8 nm, each with a bandpass of 1.1 nm. The total-ozone algorithm uses the four longest wavelength bands (312.5, 317.5, 331.1, and 339.8 nm), whereas the profiling algorithm uses the shorter wavelengths. The cloud cover radiometer operates at 379 nm (i.e. outside the            ozone absorption band) with a 3.0-nm bandpass and was designed to measure the reflectivity of the surface in the instantaneous field of view (IFOV). The SBUV/2 also makes periodic measurements of the solar flux by deploying a diffuser plate into the field of view (FOV) to reflect            sunlight into the instrument. The monochromator and the cloud cover radiometer are mounted so that they look in the nadir direction with coincident nominal FOV's of 11.3 by 11.3 degrees. As the satellite moves in a Sun-synchronous orbit, the FOV traces 160-km wide paths on the ground.            The earth rotates approximately 26 degrees during each orbit. The satellite footprint moves at a speed of about 6 km/sec. In discrete mode a set of 12 measurements, 1 for each discrete wavelength band, is taken every 32 seconds. The order of measurements is 252.0 to 339.8 and the            integration time is 1.25 seconds per measurement. For each monochromator measurement there is a cloud cover radiometer measurement.</gco:CharacterString>
              </gmi:description>
            </gmi:MI_Instrument>
          </gmi:instrument>
        </gmi:MI_Platform>
      </gmi:platform>
    </gmi:MI_AcquisitionInformation>
  </gmi:acquisitionInformation>
</gmi:MI_Metadata>