<?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/lgdc/CompositeProcess_IRTAM-3D_GIRO_NECTAR"/>
<om:observedProperty/>
<om:featureOfInterest>
<FeatureOfInterest>
<namedRegion xlink:href="https://metadata.pithia.eu/ontology/2.2/featureOfInterest/Earth_Ionosphere_F-Region_Bottomside"/>
<namedRegion xlink:href="https://metadata.pithia.eu/ontology/2.2/featureOfInterest/Earth_Ionosphere_E-Region"/>
</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_IRTAM-3D_GIRO_NECTAR</localID>
<namespace>pithia</namespace>
<version>1</version>
<creationDate>2022-02-27T20:30:00Z</creationDate>
<lastModificationDate>2023-09-13T10:50:00Z</lastModificationDate>
</PITHIA_Identifier>
</identifier>
<name>IRTAM 3D global real-time assimilative model of ionospheric electron density</name>
<description>
IRI-based Real-Time Assimilative Model (IRTAM) is a collection of global 3D ionospheric electron
density (Ne) computations produced every 15 minutes to follow the timeline of the ionospheric
weather dynamics. IRTAM 3D belongs to a class of "assimilative IRI" models that replace the internal
coefficients of International Reference Ionosphere (IRI), an empirical quiet-time model of ionospheric
climate with updated coefficients that are obtained by smoothly transforming ("morphing") IRI into
agreement with available observations. The observations are provided provided in near-real-time by
Global Ionosphere Radio Observatory (GIRO) ionosondes. IRTAM 3D is a 4DVAR assimilative model whose
single computation provides the best fit of the model to 24-hour history window of observations
prior to analysis time. Its underlying formalism of representing Ne distributions is the same as
in IRI: a set of 2D surface maps are computed to obtain the "anchor" points of the 1D vertical
extent of Ne at any location and time.
</description>
<type xlink:href="https://metadata.pithia.eu/ontology/2.2/instrumentType/Ionosonde"/>
<type xlink:href="https://metadata.pithia.eu/ontology/2.2/computationType/AssimilativeModel"/>
<project xlink:href="https://metadata.pithia.eu/resources/2.2/project/lgdc/Project_LGDC_RION"/>
<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/lgdc/Individual_LGDC_Galkin"/>
</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_LGDC"/>
</ResponsiblePartyInfo>
</relatedParty>
<collectionResults>
<source>
<OnlineResource>
<serviceFunction xlink:href="https://metadata.pithia.eu/ontology/2.2/serviceFunction/Application"/> <!-- use the serviceFunction vocabulary -->
<linkage><gmd:URL>https://giro.uml.edu/GAMBIT/</gmd:URL></linkage>
<name>GAMBIT Explorer Landing Page</name>
<protocol>HTTPS</protocol>
<description>
The GAMBIT Explorer landing page has the list of LGDC data resources (numerical, display) and documentation for accessing IRTAM 3D collection.
</description>
<dataFormat xlink:href="https://metadata.pithia.eu/ontology/2.2/resultDataFormat/text-html"/>
</OnlineResource>
</source>
<source>
<OnlineResource>
<serviceFunction xlink:href="https://metadata.pithia.eu/ontology/2.2/serviceFunction/ViewOnly"/> <!-- use the serviceFunction vocabulary -->
<linkage><gmd:URL>https://giro.uml.edu/IRTAM/</gmd:URL></linkage>
<name>IRTAM 3D Latest Animation Page</name>
<protocol>HTTPS</protocol>
<description>
The IRTAM-3D landing page has the latest animated images of the latest 24-hour IRTAM 3D computations.
</description>
<dataFormat xlink:href="https://metadata.pithia.eu/ontology/2.2/resultDataFormat/image-gif"/>
</OnlineResource>
</source>
<source>
<OnlineResource>
<serviceFunction xlink:href="https://metadata.pithia.eu/ontology/2.2/serviceFunction/ViewOnly"/> <!-- use the serviceFunction vocabulary -->
<linkage><gmd:URL>https://giro.uml.edu/rix/gambit-local-nowcast/</gmd:URL></linkage>
<name>IRTAM 3D Local Weather Charts</name>
<protocol>HTTPS</protocol>
<description>
The Local Weather Charts landing page has the 24-hour images of the 24-hour IRTAM weather charts at any given location and reference map.
</description>
<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"/> <!-- use the serviceFunction vocabulary -->
<linkage><gmd:URL>https://giro.uml.edu/rix/gambit-coeffs/</gmd:URL></linkage>
<name>IRTAM 3D Global Weather Numerical Products</name>
<protocol>HTTPS</protocol>
<description>
The GAMBIT Coefficients Download landing page provides access to the expansion coefficients for IRTAM 3D representation of the global ionospheric weather.
Requires user authentication in the registered or guest category. The weather coefficients are used to replace the climate coefficients in IRI 2020 model.
</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/L3"/>
<qualityAssessment>
<dataQualityFlag xlink:href="https://metadata.pithia.eu/ontology/2.2/dataQualityFlag/DQ0"/>
<metadataQualityFlag xlink:href="https://metadata.pithia.eu/ontology/2.2/metadataQualityFlag/MQ1"/>
<metadataQualityFlag xlink:href="https://metadata.pithia.eu/ontology/2.2/metadataQualityFlag/MQ2"/>
<metadataQualityFlag xlink:href="https://metadata.pithia.eu/ontology/2.2/metadataQualityFlag/MQ3"/>
<metadataQualityFlag xlink:href="https://metadata.pithia.eu/ontology/2.2/metadataQualityFlag/MQ4"/>
<metadataQualityFlag xlink:href="https://metadata.pithia.eu/ontology/2.2/metadataQualityFlag/MQ9"/>
</qualityAssessment>
<permission xlink:href="https://metadata.pithia.eu/ontology/2.2/licence/LGDC_SpaceDataPolicies"/>
</DataCollection>
