SPASE version 2.2.3

Numerical Data Product: Australian Space Weather Forecasting Centre Macquarie Island Riometer

Resource ID

spase://ASWS/NumericalData/Riometer/Mac_Riometer

Name

Australian Space Weather Forecasting Centre Macquarie Island Riometer

Alternate name

Description

A riometer (relative ionospheric opacity meter) (30 MHz) is an instrument used to quantify the amount of electromagnetic wave ionospheric absorption in the atmosphere.[1] As the name implies, a riometer measures the "opacity" of the ionosphere to radio noise emanating from distant stars and galaxies. In the absence of any ionospheric absorption, this radio noise, averaged over a sufficiently long period of time, forms a quiet-day curve. Increased ionization in the ionosphere will cause absorption of radio signals (both terrestrial and extraterrestrial), and a departure from the quiet-day curve. The difference between the quiet-day curve and the riometer signal is an indicator of the amount of absorption, and is measured in decibels. Riometers are generally passive radio antenna operating in the VHF radio frequency range (~30 MHz). The WDC archives Riometer data obtained from Casey, Davis, Mawson and Macquarie Island in Antarctica. The first Riometer data file from Macquarie Island was obtained on 11/09/1987.

Additional information

World Data Centre: Data Display and Download: Riometer

includes browse display interface, button to get daily data file and link to data availability chart

Language

en

Documentation

includes descriptions of station, data formats and examples.

Language

en

Real Time Information: Real Time Riometer Data

Online viewer of real time Riometer data.

Language

en

Acknowledgement

We are thankful to the Australian Antarctic Division for the observations of Macquarie Island Riometer data.

Contact

	Role	Person
1.	General contact	spase://SMWG/Person/Kehe.Wang
2.	Metadata contact	spase://SMWG/Person/Kehe.Wang

Release date

2016-12-08 17:00:00

Repository

Name

spase://SMWG/Repository/SWS

Availability

Online

Access rights

Open

URL

https access to Riometer data

https access to the station Riometer data data of Macquarie Island and a README file.

Language

en

Format

Text

Encoding

None

Acknowledgement

Provider processing level

The Riometer data are processed data and are uncalibrated.

Instrument

spase://ASWS/Instrument/Ground/Macquarie_Island/Riometer

Measurement type

Active waves

Temporal description

Start date

1987-09-11 00:00:00

Relative stop date

1 day ago

Note

The earliest Riometer data since 11/09/1987. Digital data are current to within a day.

Observed regions

Earth.NearSurface

Caveats

Keywords

Riometer

Parameters