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    "abstract": "The EUV flux data came from the Extreme UltraViolet Spectrometer on the Atmosphere Explorer E. The data\nfor 15 wavelength groups are normalized to the reference spectrum SC21REFW.DAT (located in directory REF_SPEC). GET_EUVS.FOR is a program to read\nthe EUV data file (written by Dean Pesnell).\n\nThe EUVS instrument is described in an article by Hinteregger\nin Radio Science, Volume 8, Number 4, 349-360, 1973. For more\nreferences please consult the file REF_LIST in the AEDOC\ndirectory.\n\nIn addition to the solar EUV measurements, the EUVS also provided\nan opportunity to study the optical depth (absorption) of the\nthermosphere. Details of this analysis are described in:\n\n L.M. Chaikin and K. Fukui, Absorption Data Analysis\n for EUVS Experiment on the Satellites AE-C, D, and E,\n Air Force Geophysics Laboratory, Report AFGL-TR-79-0191,\n Hanscom AFB, Massachusetts, August 1979.\n",
    
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        <xhtml:div class="header">
            <xhtml:div class="middle">HDPWS</xhtml:div>
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                    <xhtml:div class="access">
                        <xhtml:p class="box-title">
                    Data Access
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                        <xhtml:h1>
                            <xhtml:a name="spase://NASA/NumericalData/AE-E/EUVS/PT256S">AE-E Extreme UltraViolet (EUV) Spectrometer Flux</xhtml:a>
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			(2026). 
			AE-E Extreme UltraViolet (EUV) Spectrometer Flux. 
    
			[Data set].
		Space Physics Data Facility. 
			<xhtml:a href="https://doi.org/10.48322/yfx1-zr13">https://doi.org/10.48322/yfx1-zr13</xhtml:a>. Accessed on <xhtml:script>document.write(currentDateStr);</xhtml:script>.
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                            <xhtml:br/>
                Note: Proper references, including 
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                            <xhtml:div class="definition">spase://NASA/NumericalData/AE-E/EUVS/PT256S</xhtml:div>
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                            <xhtml:div class="term">Description</xhtml:div>
                            <xhtml:div class="definition">The EUV flux data came from the Extreme UltraViolet Spectrometer on the Atmosphere Explorer E. The data
for 15 wavelength groups are normalized to the reference spectrum SC21REFW.DAT (located in directory REF_SPEC). GET_EUVS.FOR is a program to read
the EUV data file (written by Dean Pesnell).

The EUVS instrument is described in an article by Hinteregger
in Radio Science, Volume 8, Number 4, 349-360, 1973. For more
references please consult the file REF_LIST in the AEDOC
directory.

In addition to the solar EUV measurements, the EUVS also provided
an opportunity to study the optical depth (absorption) of the
thermosphere. Details of this analysis are described in:

 L.M. Chaikin and K. Fukui, Absorption Data Analysis
 for EUVS Experiment on the Satellites AE-C, D, and E,
 Air Force Geophysics Laboratory, Report AFGL-TR-79-0191,
 Hanscom AFB, Massachusetts, August 1979.
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                            <xhtml:div class="term">Metadata Rights</xhtml:div>
                            <xhtml:div class="definition">CC0-1.0: 
              <xhtml:a href="https://spdx.org/licenses/CC0-1.0.html" target="_blank">Creative Commons Zero v1.0 Universal</xhtml:a>
                                <xhtml:div class="term">Note</xhtml:div>
                                <xhtml:div class="definition">CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions. The actual data/software may be subject to a different license.
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                    <xhtml:h1 class="detail">Details</xhtml:h1>
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                        <xhtml:p class="version">Version:2.7.1</xhtml:p>
                        <xhtml:h1>NumericalData</xhtml:h1>
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                            <xhtml:div class="definition">AE-E Extreme UltraViolet (EUV) Spectrometer Flux</xhtml:div>
                            <xhtml:div class="term">DOI</xhtml:div>
                            <xhtml:div class="definition">https://doi.org/10.48322/yfx1-zr13</xhtml:div>
                            <xhtml:div class="term">ReleaseDate</xhtml:div>
                            <xhtml:div class="definition">2026-07-21 12:03:53Z</xhtml:div>
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                                    <xhtml:div class="definition">2020-07-07 21:14:16Z</xhtml:div>
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                                    <xhtml:div class="definition">2025-12-04 13:28:26Z</xhtml:div>
                                    <xhtml:div class="term">Note</xhtml:div>
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                                    <xhtml:div class="definition">2026-04-10 09:58:42Z</xhtml:div>
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                                    <xhtml:div class="definition">Added new Contact(s). ZCB</xhtml:div>
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                                <xhtml:div class="definition">
                                    <xhtml:div class="term">ReleaseDate</xhtml:div>
                                    <xhtml:div class="definition">2026-04-10 10:03:41Z</xhtml:div>
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                                    <xhtml:div class="definition">2026-04-30 16:33:58Z</xhtml:div>
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                                    <xhtml:div class="definition">2026-06-26 13:14:25Z</xhtml:div>
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                                    <xhtml:div class="definition">2026-07-21 12:03:53Z</xhtml:div>
                                    <xhtml:div class="term">Note</xhtml:div>
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                            <xhtml:div class="term">Description</xhtml:div>
                            <xhtml:div class="definition">The EUV flux data came from the Extreme UltraViolet Spectrometer on the Atmosphere Explorer E. The data
for 15 wavelength groups are normalized to the reference spectrum SC21REFW.DAT (located in directory REF_SPEC). GET_EUVS.FOR is a program to read
the EUV data file (written by Dean Pesnell).

The EUVS instrument is described in an article by Hinteregger
in Radio Science, Volume 8, Number 4, 349-360, 1973. For more
references please consult the file REF_LIST in the AEDOC
directory.

In addition to the solar EUV measurements, the EUVS also provided
an opportunity to study the optical depth (absorption) of the
thermosphere. Details of this analysis are described in:

 L.M. Chaikin and K. Fukui, Absorption Data Analysis
 for EUVS Experiment on the Satellites AE-C, D, and E,
 Air Force Geophysics Laboratory, Report AFGL-TR-79-0191,
 Hanscom AFB, Massachusetts, August 1979.
</xhtml:div>
                            <xhtml:div class="term">PublicationInfo</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:div class="term">Authors</xhtml:div>
                                <xhtml:div class="definition">Fellows, Robert F.</xhtml:div>
                                <xhtml:div class="term">PublicationDate</xhtml:div>
                                <xhtml:div class="definition">2026-04-10 10:03:41Z</xhtml:div>
                                <xhtml:div class="term">PublishedBy</xhtml:div>
                                <xhtml:div class="definition">Space Physics Data Facility</xhtml:div>
                            </xhtml:div>
                            <xhtml:div class="term">Contacts</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:table class="nested" cellspacing="0">
                                    <xhtml:tr>
                                        <xhtml:th/>
                                        <xhtml:th class="center">Role</xhtml:th>
                                        <xhtml:th class="center">Person</xhtml:th>
                                        <xhtml:th class="center">StartDate</xhtml:th>
                                        <xhtml:th class="center">StopDate</xhtml:th>
                                        <xhtml:th class="center">Note</xhtml:th>
                                    </xhtml:tr>
                                    <xhtml:tbody>
                                        <xhtml:tr>
                                            <xhtml:td>1.</xhtml:td>
                                            <xhtml:td>PrincipalInvestigator</xhtml:td>
                                            <xhtml:td>
                                                <xhtml:a target="_blank" href="https://spase-metadata.org/SMWG/Person/Robert.F.Fellows.html">spase://SMWG/Person/Robert.F.Fellows</xhtml:a>
                                            </xhtml:td>
                                            <xhtml:td/>
                                            <xhtml:td/>
                                            <xhtml:td/>
                                        </xhtml:tr>
                                        <xhtml:tr>
                                            <xhtml:td>2.</xhtml:td>
                                            <xhtml:td>GeneralContact</xhtml:td>
                                            <xhtml:td>
                                                <xhtml:a target="_blank" href="https://spase-metadata.org/SMWG/Person/Dieter.K.Bilitza.html">spase://SMWG/Person/Dieter.K.Bilitza</xhtml:a>
                                            </xhtml:td>
                                            <xhtml:td/>
                                            <xhtml:td/>
                                            <xhtml:td/>
                                        </xhtml:tr>
                                    </xhtml:tbody>
                                </xhtml:table>
                            </xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:p/>
                                <xhtml:p/>
                            </xhtml:div>
                            <xhtml:div class="term">InformationURL</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:div class="term">Name</xhtml:div>
                                <xhtml:div class="definition">HelioData</xhtml:div>
                                <xhtml:div class="term">URL</xhtml:div>
                                <xhtml:div class="definition">
                                    <xhtml:a target="_blank" href="https://helio.data.nasa.gov/dataset/AE-E_EUVS_PT256S">https://helio.data.nasa.gov/dataset/AE-E_EUVS_PT256S</xhtml:a>
                                </xhtml:div>
                                <xhtml:div class="term">Description</xhtml:div>
                                <xhtml:div class="definition">The HelioData dataset page provides an overview of the dataset with access links, associated variables, and more.</xhtml:div>
                            </xhtml:div>
                            <xhtml:div class="term">PriorIDs</xhtml:div>
                            <xhtml:div class="definition">spase://VSPO/NumericalData/P_AE-E_HDR_EUV</xhtml:div>
                            <xhtml:div class="definition">spase://VSPO/NumericalData/AE-E/EUVS/PT256S</xhtml:div>
                        </xhtml:div>
                        <xhtml:div class="term">AccessInformation</xhtml:div>
                        <xhtml:div class="definition">
                            <xhtml:div class="term">RepositoryID</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:a href="https://spase-metadata.org/SMWG/Repository/NASA/GSFC/SPDF.html">spase://SMWG/Repository/NASA/GSFC/SPDF</xhtml:a>
                            </xhtml:div>
                            <xhtml:div class="term">Availability</xhtml:div>
                            <xhtml:div class="definition">Online</xhtml:div>
                            <xhtml:div class="term">AccessRights</xhtml:div>
                            <xhtml:div class="definition">Open</xhtml:div>
                            <xhtml:div class="term">RightsList</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:div class="term">Rights</xhtml:div>
                                <xhtml:div class="definition">
                                    <xhtml:div class="term">SchemeURI</xhtml:div>
                                    <xhtml:div class="definition">https://spdx.org/licenses/</xhtml:div>
                                    <xhtml:div class="term">RightsIdentifierScheme</xhtml:div>
                                    <xhtml:div class="definition">SPDX</xhtml:div>
                                    <xhtml:div class="term">RightsIdentifier</xhtml:div>
                                    <xhtml:div class="definition">CC0-1.0</xhtml:div>
                                    <xhtml:div class="term">RightsURI</xhtml:div>
                                    <xhtml:div class="definition">https://spdx.org/licenses/CC0-1.0.html</xhtml:div>
                                    <xhtml:div class="term">RightsName</xhtml:div>
                                    <xhtml:div class="definition">Creative Commons Zero v1.0 Universal</xhtml:div>
                                    <xhtml:div class="term">Note</xhtml:div>
                                    <xhtml:div class="definition">CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products</xhtml:div>
                                </xhtml:div>
                            </xhtml:div>
                            <xhtml:div class="term">AccessURL</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:div class="term">Name</xhtml:div>
                                <xhtml:div class="definition">FTPBrowser</xhtml:div>
                                <xhtml:div class="term">URL</xhtml:div>
                                <xhtml:div class="definition">
                                    <xhtml:a target="_blank" href="https://omniweb.gsfc.nasa.gov/ftpbrowser/ae_e.html">https://omniweb.gsfc.nasa.gov/ftpbrowser/ae_e.html</xhtml:a>
                                </xhtml:div>
                            </xhtml:div>
                            <xhtml:div class="term">AccessURL</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:div class="term">Name</xhtml:div>
                                <xhtml:div class="definition">FTPS from SPDF (not with most browsers)</xhtml:div>
                                <xhtml:div class="term">URL</xhtml:div>
                                <xhtml:div class="definition">
                                    <xhtml:a target="_blank" href="ftps://spdf.gsfc.nasa.gov/pub/data/ae/ae_e/solar_euv_spectrophotometer/ae_e_euv_flux/">ftps://spdf.gsfc.nasa.gov/pub/data/ae/ae_e/solar_euv_spectrophotometer/ae_e_euv_flux/</xhtml:a>
                                </xhtml:div>
                            </xhtml:div>
                            <xhtml:div class="term">AccessURL</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:div class="term">Name</xhtml:div>
                                <xhtml:div class="definition">HTTPS from SPDF</xhtml:div>
                                <xhtml:div class="term">URL</xhtml:div>
                                <xhtml:div class="definition">
                                    <xhtml:a target="_blank" href="https://spdf.gsfc.nasa.gov/pub/data/ae/ae_e/solar_euv_spectrophotometer/ae_e_euv_flux/">https://spdf.gsfc.nasa.gov/pub/data/ae/ae_e/solar_euv_spectrophotometer/ae_e_euv_flux/</xhtml:a>
                                </xhtml:div>
                                <xhtml:div class="term">Description</xhtml:div>
                                <xhtml:div class="definition">In CDF via HTTP from SPDF</xhtml:div>
                            </xhtml:div>
                            <xhtml:div class="term">Format</xhtml:div>
                            <xhtml:div class="definition">Text</xhtml:div>
                        </xhtml:div>
                        <xhtml:div class="term">ProviderProcessingLevel</xhtml:div>
                        <xhtml:div class="definition">CALIBRATED</xhtml:div>
                        <xhtml:div class="term">InstrumentIDs</xhtml:div>
                        <xhtml:div class="definition">
                            <xhtml:a target="_blank" href="https://spase-metadata.org/SMWG/Instrument/AE-E/EUVS.html">spase://SMWG/Instrument/AE-E/EUVS</xhtml:a>
                        </xhtml:div>
                        <xhtml:div class="term">MeasurementType</xhtml:div>
                        <xhtml:div class="definition">Radiance</xhtml:div>
                        <xhtml:div class="term">TemporalDescription</xhtml:div>
                        <xhtml:div class="definition">
                            <xhtml:div class="term">TimeSpan</xhtml:div>
                            <xhtml:div class="definition">
                                <xhtml:div class="term">StartDate</xhtml:div>
                                <xhtml:div class="definition">1977-07-01 00:00:00Z</xhtml:div>
                                <xhtml:div class="term">StopDate</xhtml:div>
                                <xhtml:div class="definition">1981-06-09 23:59:59Z</xhtml:div>
                            </xhtml:div>
                            <xhtml:div class="term">Cadence</xhtml:div>
                            <xhtml:div class="definition">PT256S</xhtml:div>
                        </xhtml:div>
                        <xhtml:div class="term">ObservedRegion</xhtml:div>
                        <xhtml:div class="definition">Earth.NearSurface.Ionosphere</xhtml:div>
                        <xhtml:div class="term">ObservedRegion</xhtml:div>
                        <xhtml:div class="definition">Earth.NearSurface.Atmosphere</xhtml:div>
                    </xhtml:div>
                </xhtml:div>
            </xhtml:div>
        </xhtml:div>
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            <xhtml:div class="footer">
                <xhtml:img class="image-left" src="/logos/nasa-logo.svg" alt="NASA Insignia"/>
                <xhtml:div class="footer-item">Contact SPDF: <xhtml:a style="all:revert" href="mailto:NASA-SPDF-Support@nasa.gov?subject=HDPWS SPASE">NASA-SPDF Feedback/Support</xhtml:a>
                </xhtml:div>
                <xhtml:div class="footer-item">Responsible NASA Official: <xhtml:a style="all: revert" href="mailto:Lan.Jian@nasa.gov">Lan Jian</xhtml:a>
                </xhtml:div>
                <xhtml:div class="footer-item">Site Editor: <xhtml:a style="all:revert" href="mailto:NASA-SPDF-Support@nasa.gov">Rita Johnson</xhtml:a>
                </xhtml:div>
                <xhtml:div class="footer-item">
                    <xhtml:a style="all:revert" href="https://ror.org/00ryjtt64">SPDF ROR ID</xhtml:a>
                </xhtml:div>
                <xhtml:div class="footer-item">
                    <xhtml:a style="all:revert" href="https://www.re3data.org/repository/r3d100010168">SPDF re3data ID</xhtml:a>
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                <xhtml:div class="footer-item">
                    <xhtml:span>Last Updated: 2026-07-21</xhtml:span>
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