<?xml version="1.0" encoding="UTF-8"?>
<CompositeProcess xmlns="https://metadata.pithia.eu/schemas/2.2" xmlns:xlink="http://www.w3.org/1999/xlink">
<identifier>
<PITHIA_Identifier>
<localID>CompositeProcess_PCN_Geomagnetic_Index_Computation</localID>
<namespace>jfw</namespace>
<version>1</version>
<creationDate>2025-03-11T11:31:00Z</creationDate>
<lastModificationDate>2025-03-11T12:50:00Z</lastModificationDate>
</PITHIA_Identifier>
</identifier>
<name>PCN geomagnetic index computation</name>
<description>Process of acquiring ground-based geomagnetic field data in the polar cap and computing a quicklook (nowcast), provisional, and definitive Polar Cap North (PCN) index.</description>
<capabilities>
<processCapability>
<name>ActivityIndicator: Polar Cap North (PCN) index</name>
<observedProperty xlink:href="https://metadata.pithia.eu/ontology/2.2/observedProperty/MagneticField_Vector"/>
<dimensionalityInstance xlink:href="https://metadata.pithia.eu/ontology/2.2/dimensionalityInstance/0D"/>
<dimensionalityTimeline xlink:href="https://metadata.pithia.eu/ontology/2.2/dimensionalityTimeline/1DTimeseries"/>
<cadence unit="minute">1</cadence>
<vectorRepresentation xlink:href="https://metadata.pithia.eu/ontology/2.2/component/x"/>
<vectorRepresentation xlink:href="https://metadata.pithia.eu/ontology/2.2/component/y"/>
<coordinateSystem xlink:href="https://metadata.pithia.eu/ontology/2.2/crs/WGS84spherical"/>
<units xlink:href="https://metadata.pithia.eu/ontology/2.2/unit/nT"/>
<qualifier xlink:href="https://metadata.pithia.eu/ontology/2.2/qualifier/VariationAboutMean"/>
</processCapability>
</capabilities>
<dataLevel xlink:href="https://metadata.pithia.eu/ontology/2.2/dataLevel/L2V"/>
<acquisitionComponent xlink:href="https://metadata.pithia.eu/resources/2.2/acquisition/jfw/Acquisition_FGE_3-axis_Linear-core_Fluxgate_Magnetometer"/>
<computationComponent xlink:href="https://metadata.pithia.eu/resources/2.2/computation/jfw/Computation_PCN_Index"/>
</CompositeProcess>
