<?xml version="1.0" encoding="UTF-8"?>
<DataCollection 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" xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:om="http://www.opengis.net/om/2.0" xsi:schemaLocation="https://metadata.pithia.eu/schemas/2.2 https://metadata.pithia.eu/schemas/2.2/pithia.xsd">
<!--
First report some required elements from ISO standard for Observation
-->
<om:phenomenonTime/><!-- DO NOT USE, we report phenomenon time only in Catalogs -->
<om:resultTime/> <!-- DO NOT USE, we report result time only in Catalogs -->
<om:procedure xlink:href="https://metadata.pithia.eu/resources/2.2/process/noa/CompositeProcess_EIS_hmF2_Nowcast"/>
<om:observedProperty/>
<om:featureOfInterest>
<FeatureOfInterest>
<namedRegion xlink:href="https://metadata.pithia.eu/ontology/2.2/featureOfInterest/Earth_Ionosphere"/>
</FeatureOfInterest>
</om:featureOfInterest>
<om:result/> <!-- DO NOT USE, we use the CollectionResults below to specify URLs to provider) -->
<!--
Now our Data Collection elements next
-->
<identifier>
<PITHIA_Identifier>
<localID>DataCollection_EIS_hmF2_Nowcast</localID>
<namespace>noa</namespace>
<version>1</version>
<creationDate>2023-03-14T19:00:00Z</creationDate>
<lastModificationDate>2024-07-22T14:52:00Z</lastModificationDate>
</PITHIA_Identifier>
</identifier>
<name>EIS hmF2 Nowcast Maps</name>
<!-- Type is not allowed here. Comes from procedure ? -->
<!-- <type xlink:href="https://metadata.pithia.eu/ontology/2.2/instrumentType/IncoherentScatterRadar"/> -->
<description>
A map of Europe that presents the current level of maximum ionization height (hmF2), developed with data from 4 ionospheric stations.
Nowcasts of the hmF2 peak electron density height for the European region are made available with 15 min temporal resolution in the form
of maps as images (PNG) and text files (ASCII). The maps cover the European area between -10°W and 40°E in longitude and between
30°N and 72°N in latitude and are provided with 1°x1° spatial resolution.
The grid values are estimated through the implementation of Polyweight interpolation procedure, a modification of the
“inverse distance to a power” gridding method that calculates parameter values at the grid nodes (Kutiev et al., 2016).
The algorithm receives as input real time autoscaled hmF2 values from the DIAS network (Belehaki et al., 2006).
The maps are made available through the TechTIDE warning services (Belehaki et al., 2020).
</description>
<type xlink:href="https://metadata.pithia.eu/ontology/2.2/computationType/Model"/>
<project xlink:href="https://metadata.pithia.eu/resources/2.2/project/noa/Project_NOA_EIS"/>
<relatedParty>
<ResponsiblePartyInfo>
<role xlink:href="https://metadata.pithia.eu/ontology/2.2/relatedPartyRole/PointOfContact"/>
<party xlink:href="https://metadata.pithia.eu/resources/2.2/individual/noa/Individual_NOA_Belehaki"/>
</ResponsiblePartyInfo>
</relatedParty>
<relatedParty>
<ResponsiblePartyInfo>
<role xlink:href="https://metadata.pithia.eu/ontology/2.2/relatedPartyRole/DataProvider"/>
<party xlink:href="https://metadata.pithia.eu/resources/2.2/organisation/pithia/Organisation_NOA"/>
</ResponsiblePartyInfo>
</relatedParty>
<collectionResults>
<source>
<OnlineResource>
<serviceFunction xlink:href="https://metadata.pithia.eu/ontology/2.2/serviceFunction/Download"/>
<linkage><gmd:URL>https://swe.ssa.esa.int/dias-federated</gmd:URL></linkage>
<name>European Ionosonde Service (EIS) Interface</name>
<protocol>HTTPS</protocol>
<description>The EIS provides a browser-based user interface for data browsing and downloading.
Direct data access requires authentication by external organisation (ESA);
once user access is authorised the link lands directly at the EIS page.
The product can be accessed by selecting the "hmF2 Maps" tab.</description>
<dataFormat xlink:href="https://metadata.pithia.eu/ontology/2.2/resultDataFormat/text-plain"/>
<dataFormat xlink:href="https://metadata.pithia.eu/ontology/2.2/resultDataFormat/image-png"/>
</OnlineResource>
</source>
<source>
<OnlineResource>
<serviceFunction xlink:href="https://metadata.pithia.eu/ontology/2.2/serviceFunction/Download"/>
<linkage><gmd:URL>https://techtide-srv-pub.space.noa.gr/techtide/</gmd:URL></linkage>
<name>TechTIDE Warning Services User Interface</name>
<protocol>HTTPS</protocol>
<description>The TechTIDE service provides a browser-based user interface for data browsing and downloading.
The product can be accessed by selecting the "INDICATORS / hmF2 Map" tab.</description>
<dataFormat xlink:href="https://metadata.pithia.eu/ontology/2.2/resultDataFormat/text-plain"/>
<dataFormat xlink:href="https://metadata.pithia.eu/ontology/2.2/resultDataFormat/image-png"/>
</OnlineResource>
</source>
<source>
<OnlineResource>
<serviceFunction xlink:href="https://metadata.pithia.eu/ontology/2.2/serviceFunction/Application"/>
<linkage><gmd:URL>https://techtide-srv-pub.space.noa.gr:8443/api/</gmd:URL></linkage>
<name>TechTIDE API</name>
<protocol>HTTPS</protocol>
<description>The TechTIDE API provides a browser-based user interface for data browsing and downloading.
API parameters: (1) Endpoint: products/eis/data, (2) Date-time format: YYYY-MM-DDThh:mm:ss (ISO format),
(3) maximum temporal range of query: 15 days, (4) product: hmF2 (Data) and hmF2img (Plot),
(5) withmanifest: false.</description>
<dataFormat xlink:href="https://metadata.pithia.eu/ontology/2.2/resultDataFormat/application-json"/>
</OnlineResource>
</source>
</collectionResults>
<dataLevel xlink:href="https://metadata.pithia.eu/ontology/2.2/dataLevel/L4"/>
<qualityAssessment>
<dataQualityFlag xlink:href="https://metadata.pithia.eu/ontology/2.2/dataQualityFlag/DQ4"/>
</qualityAssessment>
<permission xlink:href="https://metadata.pithia.eu/ontology/2.2/licence/CCBY"/>
</DataCollection>
