HDPWS

Australian Space Weather Services Learmonth Solar Observatory Solar Radio Data

ResourceID
spase://ASWS/NumericalData/Solar_Radio/Lem_Solar_Radio

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.

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Details

Version:2.3.2

NumericalData

ResourceID
spase://ASWS/NumericalData/Solar_Radio/Lem_Solar_Radio
ResourceHeader
ResourceName
Australian Space Weather Services Learmonth Solar Observatory Solar Radio Data
ReleaseDate
2021-03-29 17:14:50Z
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.
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.
Contacts
Role Person StartDate StopDate Note
1. GeneralContact spase://ASWS/Person/Kehe.Wang
2. MetadataContact spase://ASWS/Person/Kehe.Wang
3. MetadataContact spase://SMWG/Person/Lee.Frost.Bargatze

InformationURL
Name
Documentation
URL
Description
includes descriptions of Observation Log format, data format
Language
en
PriorIDs
spase://ASWS/DisplayData/Solar_Radio/Lem_Solar_Radio
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
Real Time Display
URL
Style
Overview
Description
Real Time display of solar radio (245-15400 MHz) during daylight hours in Learmonth, Display Cadence: 12 hr
Language
en
AccessURL
Name
World Data Centre: Data Display and Download
URL
Style
Search
Description
includes browse display interface, and link to data availability chart
Language
en
AccessURL
Name
Access to dynamic spectra plots (not with most browsers)
URL
Style
Listing
Description
Access to the Learmonth Solar Radio data files
Language
en
Format
Text
Encoding
None
InstrumentIDs
MeasurementType
Waves.Passive
TemporalDescription
TimeSpan
StartDate
1991-01-01 05:00:00Z
RelativeStopDate
-P2D
Note
Data are current to within a day or two.
Cadence
PT1S
ObservedRegion
Sun
ObservedRegion
Earth.Magnetosphere
ObservedRegion
Heliosphere.Inner
ObservedRegion
Heliosphere.Outer
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
Parameter #1
Name
Frequency
Description
Eight discrete frequencies used to monitor solar radio flux.
Cadence
PT1S
Wave
WaveType
Electromagnetic
Qualifier
Magnitude
Qualifier
Pseudo
WaveQuantity
ACElectricField
FrequencyRange
SpectralRange
RadioFrequency
Low
254
High
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
PT1S
Units
SFU
ValidMin
0
ValidMax
500,000
Field
Qualifier
Spectral
FieldQuantity
Electromagnetic