<?xml version="1.0" encoding="UTF-8"?>
<DataCollection xmlns="https://metadata.pithia.eu/schemas/2.2" xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:om="http://www.opengis.net/om/2.0" xmlns:xlink="http://www.w3.org/1999/xlink">
<om:phenomenonTime/>
<om:resultTime/>
<om:procedure/>
<om:observedProperty/>
<om:featureOfInterest>
<FeatureOfInterest>
<namedRegion xlink:href="https://metadata.pithia.eu/ontology/2.2/featureOfInterest/Earth_Ionosphere"/>
<namedRegion xlink:href="https://metadata.pithia.eu/ontology/2.2/featureOfInterest/Earth_Magnetosphere"/>
</FeatureOfInterest>
</om:featureOfInterest>
<om:result/>
<identifier>
<PITHIA_Identifier>
<localID>DataCollection_PCN_Polar_Cap_North_Index</localID>
<namespace>jfw</namespace>
<version>1</version>
<creationDate>2025-03-10T19:45:00Z</creationDate>
<lastModificationDate>2025-03-11T13:34:00Z</lastModificationDate>
</PITHIA_Identifier>
</identifier>
<name>Polar Cap North (PCN) index</name>
<description>Measure of the geomagnetic activity over the polar caps caused by changes in the interplanetary magnetic field (IMF) and solar wind, driven by the geoeffective interplanetary electric field irrespective of time, season and solar cycle phase. Proxy for the solar wind merging electric field.</description>
<type xlink:href="https://metadata.pithia.eu/ontology/2.2/computationType/GeomagneticActivityIndicator"/>
<collectionResults>
<source>
<OnlineResource>
<serviceFunction xlink:href="https://metadata.pithia.eu/ontology/2.2/serviceFunction/Numerical"/>
<linkage>
<gmd:URL>https://ftp.space.dtu.dk/WDC/indices/pcn/</gmd:URL>
</linkage>
<name>Index of /WDC/indices/pcn</name>
<protocol>ftp</protocol>
<description>The Geomagnetic PCN index FTP download page provides access to the quick-look (nowcast), provisional, and definitive Polar Cap North index.</description>
<dataFormat xlink:href="https://metadata.pithia.eu/ontology/2.2/resultDataFormat/text-plain"/>
</OnlineResource>
</source>
</collectionResults>
<dataLevel xlink:href="https://metadata.pithia.eu/ontology/2.2/dataLevel/L2V"/>
<permission xlink:href="https://metadata.pithia.eu/ontology/2.2/licence/CCBYNC"/>
<permission xlink:href="https://metadata.pithia.eu/ontology/2.2/licence/DTUSpace"/>
</DataCollection>