<?xml version="1.0" encoding="UTF-8"?>
<Instrument 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>Instrument_Ionosonde_Sodankyla</localID>
<namespace>sgo</namespace>
<version>1</version>
<creationDate>2023-03-14T21:08:00Z</creationDate>
<lastModificationDate>2023-03-15T11:44:00Z</lastModificationDate>
</PITHIA_Identifier>
</identifier>
<name>Sodankyla Alpha-Wolf Ionosonde</name>
<description>
The Sodankyla Ionosonde started regular, half-hourly vertical soundings of the ionosphere on 1st August 1957.
The observatory's second sounder (IS-14) was taken into operation on 1st February 1977. This sounder was modified later on.
A new era of ionospheric vertical soundings began on 16th November 2005 when the new "Alpha Wolf" ionosonde was taken into use,
which was built from scratch as a research ionosonde by the observatory during the previous three years. The new instrument
performed soundings every 10 min until early April 2007, when 1-min soundings for the IPY began.
</description>
<type xlink:href="https://metadata.pithia.eu/ontology/2.2/instrumentType/VerticalSounder"/>
<operationalMode><InstrumentOperationalMode>
<id>ionogram</id>
<name>Scanning Ionogram</name>
<description>
Normal vertical sounding program: Usually 6 ionograms per hour (higher resolution possible).
Display: O-mode ionogram is currently published on web in real-time. Real-time ionograms have 90dB dynamic range. Virtual range up to 3000km.
</description>
</InstrumentOperationalMode>
</operationalMode>
</Instrument>
