<?xml version="1.0" encoding="UTF-8"?>
<ComputationCapabilities xmlns="https://metadata.pithia.eu/schemas/2.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xsi:schemaLocation="https://metadata.pithia.eu/schemas/2.2 https://metadata.pithia.eu/schemas/2.2/pithia.xsd">
<identifier>
<PITHIA_Identifier>
<localID>ComputationCapabilities_TechTIDE_LSTIDx</localID>
<namespace>noa</namespace>
<version>1</version>
<creationDate>2023-03-12T16:22:00Z</creationDate>
<lastModificationDate>2023-05-23T11:21:00Z</lastModificationDate>
</PITHIA_Identifier>
</identifier>
<name>TechTIDE LSTID activity index</name>
<description>Time plot of the Large Scale Travelling Ionospheric Disturbances (LSTID) over European and South African Digisonde stations, providing
the relative standard deviation of the critical frequency of the F2 layer of the ionosphere (foF2) within an hour, updated every 15 min.
The product provides the current level of ionospheric perturbation to warn space and ground systems' operators for activity
related to large scale travelling ionospheric disturbances.</description>
<capabilities>
<processCapability>
<name>F2-layer Critical Frequency</name>
<observedProperty xlink:href="https://metadata.pithia.eu/ontology/2.2/observedProperty/CriticalFrequency_F2-Layer"/>
<dimensionalityInstance xlink:href="https://metadata.pithia.eu/ontology/2.2/dimensionalityInstance/2DImageIonogram"/>
<units xlink:href="https://metadata.pithia.eu/ontology/2.2/unit/MHz"/>
</processCapability>
<processCapability>
<name>Scale height parameter of the F2 layer in assumption of the Chapman layer model</name>
<observedProperty xlink:href="https://metadata.pithia.eu/ontology/2.2/observedProperty/ScaleHeight_F2-Layer_Chapman"/>
</processCapability>
<processCapability>
<name>Peak height of the F2 layer</name>
<observedProperty xlink:href="https://metadata.pithia.eu/ontology/2.2/observedProperty/PeakHeight_F2-Layer"/>
</processCapability>
</capabilities>
<dataLevel xlink:href="https://metadata.pithia.eu/ontology/2.2/dataLevel/L4"/>
<qualityAssessment>
<dataQualityFlag xlink:href="https://metadata.pithia.eu/ontology/2.2/dataQualityFlag/DQ2"/>
</qualityAssessment>
<type xlink:href="https://metadata.pithia.eu/ontology/2.2/computationType/ActivityIndicator"/>
</ComputationCapabilities>