From f4fe37f53b94cef4fa1b242495e234f8551e07cf Mon Sep 17 00:00:00 2001
From: Seiji Yashiro <seiji.yashiro@gmail.com>
Date: Tue, 13 Aug 2024 15:37:26 -0400
Subject: [PATCH] created the SOHO/SWAN NumericalData description.

---
 NumericalData/SOHO/SWAN/SSA_SDAC.xml | 71 ++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 NumericalData/SOHO/SWAN/SSA_SDAC.xml

diff --git a/NumericalData/SOHO/SWAN/SSA_SDAC.xml b/NumericalData/SOHO/SWAN/SSA_SDAC.xml
new file mode 100644
index 0000000..15e5082
--- /dev/null
+++ b/NumericalData/SOHO/SWAN/SSA_SDAC.xml
@@ -0,0 +1,71 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Spase xmlns="http://www.spase-group.org/data/schema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.spase-group.org/data/schema  http://www.spase-group.org/data/schema/spase-2_6_1.xsd">
+   <Version>2.6.1</Version>
+   <NumericalData>
+      <ResourceID>spase://ESA/NumericalData/SOHO/SWAN/SSA_SDAC</ResourceID>
+      <ResourceHeader>
+         <ResourceName>SOHO SWAN Data</ResourceName>
+         <ReleaseDate>1996-01-18T00:00:00</ReleaseDate>
+         <RevisionHistory>
+            <RevisionEvent>
+               <ReleaseDate>2024-08-14T00:08:46</ReleaseDate>
+               <Note>Metadata created by SY</Note>
+            </RevisionEvent>
+         </RevisionHistory>
+         <Description>The SWAN Instrument is designed to observe the solar Lyman alpha photons (121.6 nm) backscattered by the neutral hydrogen atoms present in the interplanetary medium. The background images show the distribution pattern of the backscattered Lyman alpha photons as observed from SOHO. This image, obtained in approximately 24 hours, is then processed to reveal spatial variations of the solar illuminating flux. These spatial variations are correlated to the actual activity on the solar disk. Because SWAN observes backscattered photons, it is actually possible to &#039;see&#039; those which are originating from the farside of the Sun.</Description>
+         <PublicationInfo>
+            <Authors>The SWAN Consortium: Service d&#039;Aéronomie du CNRS (France); Finnish Meteorological Institute (Finland); Technical Research Center of Finland (Finland); University of Turku (Finland); High Altitude Observatory (USA)</Authors>
+            <PublicationDate>1996-01-18T00:00:00</PublicationDate>
+            <PublishedBy>SOHO Science Archive at the European Space Astronomy Centre</PublishedBy>
+         </PublicationInfo>
+         <Contact>
+            <PersonID>spase://SMWG/Person/Eric.Quemerais</PersonID>
+            <Role>PrincipalInvestigator</Role>
+         </Contact>
+         <Contact>
+            <PersonID>spase://SMWG/Person/Jean-Loup.C.Bertaux</PersonID>
+            <Role>FormerPI</Role>
+         </Contact>
+         <InformationURL>
+            <Name>The SOHO/SWAN Website</Name>
+            <URL>https://soho.nascom.nasa.gov/data/summary/swan/</URL>
+         </InformationURL>
+         <InformationURL>
+            <Name>The SOHO/SWAN Instrument paper</Name>
+            <URL>https://doi.org/10.1007/BF00733435</URL>
+         </InformationURL>
+      </ResourceHeader>
+      <AccessInformation>
+         <RepositoryID>spase://ESA/Repository/SOHOScienceArchive</RepositoryID>
+         <Availability>Online</Availability>
+         <AccessRights>Open</AccessRights>
+         <AccessURL>
+            <Name>SOHO Science Archive</Name>
+            <URL>https://ssa.esac.esa.int/ssa/#/pages/search</URL>
+            <Style>Search</Style>
+         </AccessURL>
+         <Format>FITS</Format>
+      </AccessInformation>
+      <AccessInformation>
+         <RepositoryID>spase://SMWG/Repository/SDAC</RepositoryID>
+         <Availability>Online</Availability>
+         <AccessRights>Open</AccessRights>
+         <AccessURL>
+            <Name>SWAN Data Search via Virtual Solar Observatory</Name>
+            <URL>https://sdac.virtualsolar.org/cgi/search?time=1&amp;inst_only=1&amp;version=current&amp;build=1&amp;instrument=SWAN</URL>
+         </AccessURL>
+         <Format>FITS</Format>
+      </AccessInformation>
+      <ProviderProcessingLevel>Raw</ProviderProcessingLevel>
+      <InstrumentID>spase://SMWG/Instrument/SOHO/SWAN</InstrumentID>
+      <MeasurementType>ImageIntensity</MeasurementType>
+      <TemporalDescription>
+         <TimeSpan>
+            <StartDate>1996-01-18T17:53:01</StartDate>
+            <RelativeStopDate>-P5D</RelativeStopDate>
+         </TimeSpan>
+      </TemporalDescription>
+      <ObservedRegion>Sun</ObservedRegion>
+      <ObservedRegion>Sun.Corona</ObservedRegion>
+   </NumericalData>
+</Spase>