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Metadata

ASWS Learmonth Solar Radio

SPASE version 2.2.3

Display Data Product: Australian Space Weather Services Learmonth Solar Observatory Solar Radio Data

Resource ID
spase://ASWS/DisplayData/Solar Radio/Lem_Solar_Radio
Name
Australian Space Weather Services Learmonth Solar Observatory Solar Radio Data
Alternate name
Description

The discrete frequencies Solar Radio data, also known as Radio Interference Monitoring Sets (RIMS), is obtained from Learmonth Solar Observatory, Western Australia, Australia. A radio telescope with three parabolic dish antennae to monitor solar radio flux on 8 discrete frequencies in the range 245-15400 MHz. The three parabolic dish antennae feed eight, single frequency, radio telescopes. The largest antenna, 28 feet (8.5 meters) diameter, is used to monitor 245, 410 and 610 MHz. An 8 feet (2.4 meters) dish is used to monitor the microwave frequencies of 1415, 2695, 4995 and 8800 MHz. A small 3 feet (1 meter) dish monitors the high microwave frequency of 15400 MHz. Radio telescope outputs are digitised (1 Hz sampling rate), collected by computer and transferred to Sydney SWS head Office WDC for process and archive. Observers in Learmonth also send DVDs with RIMS (2 DVD per year) to SWS as backup for the ftp data. Up to date, we have archived four different formats of RIMS data. They are SRD (from 2005), APL(1999-2008), LSR(1991-2006) and rdata(2003-2005). All of them are available on our FTP server and SWS website. All of the data files are online plottable and downloadable.

Additional information
World Data Centre: Data Display and Download

includes browse display interface, and link to data availability chart

Language
en
Documentation

includes descriptions of Observation Log format, data format

Language
en
Real Time Display

Real Time display of solar radio (245-15400 MHz) during daylight hours in Learmonth

Language
en
Acknowledgement

We are thankful to the United States Air Force at Learmonth Solar Observatory for supplying the RIMS instrumentation and data flow, as well as the USAF staff and Bureau of Meteorology of Australia staff for maintaining and providing the solar radio data in near real time.

Contact
Role Person
1. General contact spase://SMWG/Person/Kehe.Wang
2. Metadata contact spase://SMWG/Person/Kehe.Wang
Release date
2016-06-27 17:00:00
Repository
Name
spase://SMWG/Repository/SWS
Availability
Online
Access rights
Open
URL
FTP access to dynamic spectra plots

FTP access to the Learmonth Solar Radio data files

Language
en
Format
Text
Encoding
None
Acknowledgement
Instrument
spase://ASWS/Instrument/Ground/Learmonth/Solar_Radio
Measurement type
Passive waves
Temporal description
Start date
1991-01-01 05:00:00
Relative stop date
2 days ago
Note

Data are current to within a day or two.

Display cadence
12 hours
Observed regions
Earth.Magnetosphere
Heliosphere.Inner
Heliosphere.Outer
Sun
Caveats

The time span for each plot varies, generally spanning daylight hours.

Keywords
Discrete frequency solar radio
Radio telescope
Solar radio burst
Solar radio flux

Parameters

Parameter #1

Name
Frequency
Description

8 discrete frequencies used to monitor solar radio flux.

Caveats
Cadence
1 second
Units
Wave type
Electromagnetic
Quantity
ACElectricField
Qualifier
Magnitude
Pseudo
Frequency range
Spectral range
RadioFrequency
Low frequency
254
High frequency
15400
Units
MHz

Parameter #2

Name
Solar Radio Flux Value(SFU)
Description

The Solar Flux Unit (SFU) is a convenient measure of spectral flux density often used in solar radio observations: 1 SFU = 10^4 Jy = 10^{−22} Watts meter^{−2}Hz^{−1} = 10^{−19}erg s^{−1}cm^{−2}Hz^{−1}.

Caveats

A local radio interference, clouds (for high frequence) etc.

Cadence
1 second
Units
SFU
Valid minimum
0
Valid maximum
500,000
Quantity
Electromagnetic
Qualifier
Spectral
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