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Found 9 hits for 'AND: "space weather services" Title: sws'

SWS Cosmic Ray Data, Australasia (from Kingston and Mawson Stations) (2004 onwards)

Cosmic rays consist mainly of protons of extremely high energies. They can originate from galactic sources or from the Sun. Cosmic rays are observed indirectly. At the lowest energies able to reach the Earth's surface, this is achieved by a device known as a neutron monitor. When cosmic ray particles enter the Earth's atmosphere they interact with the nuclei of the air molecules to produce secondary radiation. At the lowest accessible energies, this consists of a shower of protons, nuclear f... more

SWS Ionospheric Scintillation Monitor Data (1999 onwards)

Ionospheric scintillation is a rapid fluctuation of radio-frequency signal phase and/or amplitude, which is generated as a signal passes through the ionosphere. Scintillation occurs when a radio frequency signal, in the form of a plane wave, traverses a region of small scale irregularities in electron density. The irregularities cause small-scale fluctuations in refractive index and subsequent differential diffraction (scattering) of the plane wave, producing phase variations along the phase... more

SWS Magnetometer Data, Southern Hemisphere (1995 onwards)

The magnetometer data provides a measure of variations of the Earth's magnetic field in 2 or 3 orthogonal directions, typically in the geomagnetic north-south and east-west directions, as well as vertically. Space Weather Services archives the digital magnetometer data recorded from a number of field installations, some of which are collaborative installations with other organizations. The first available Magnetometer data was recorded at Learmonth, WA, Australia : a site jointly managed b... more

SWS Raw and Clean Ionogram, Scaled Ionspheric data ( 1938 onwards ), Australasia

Ionograms are an image of frequency versus time delay (virtual height) of HF echoes from the ionosphere recorded by an ionosonde. An ionosonde is a swept frequency HF pulsed radar used to monitor the ionosphere. SWS WDC has archived ionogram data from 30 stations, 16 of them are still active at present. The most active ionosondes in Space Weather Network (SWN) are IPS 5D ionosonde. The 5D vertical sounding ionosondes normally sweep in frequency from about 1 to 21.5 MHz. Frequency step resol... more

SWS Riometer Data, Four Stations in Southern Hemisphere / Antarctica (1987 onwards)

The SWS WDC ( World Data Centre ) archives Riometer data obtained from Casey, Davis, Mawson and Macquarie Island in Antarctica. The first Riometer data file was obtained on 11/09/1987 from Macquarie Island . Precise start dates per station (as well as the decimal degrees and Glat/Glong) are available from: [ ]. A riometer (relative ionospheric opacity meter) (30 MHz) is an instrument used to quantify the amount of electromagnetic wave ionosphe... more

SWS Solar Images from Culgoora (N.S.W.) and Learmonth (W.A) Solar Observatories ( 2003 onwards)

Australia has made major contributions to research in solar physics for several decades. Solar images are a major kind of record of solar activities. The SWS has monitored and archived solar activity images from Culgoora and Learmonth for more than two decades. Images from Culgoora include H-Alpha (2003-2014) and White Light(2004-2013) images. A new single mounted, three telescopes structure has been installed at Culgoora. Culgoora solar image data is available for 02/01/2003 onwards. Lea... more

SWS Solar Radio Data from Learmonth (1991 onwards)

The discrete frequencies Solar Radio data, also known as Radio Interference Monitoring Sets (RIMS), is obtained from Learmonth Solar Observatory, Western Australia. Equipment: 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) in diameter, is used to monitor 245, 410 and 610 MHz. An 8... more

SWS Solar Spectrograph Data from Culgoora (N.S.W.) and Learmonth (W.A.) ( 1992 onwards )

Culgoora and Learmonth Observatories' dynamic spectrogram plots display frequency in MHz on the vertical axis and time in UT on the horizontal axis. Each plot spans local daylight hours, with time resolution of 3 seconds. The frequency range is 18 - 1800 MHz for Culgoora spectrograms, and 25 - 180 MHz for Learmonth spectrograms. The intensity values are color coded, and are expressed as relative logarithmic units (0 to 255). The Culgoora spectrograms consist of 4 frequency bands: 18-57, 57-... more

SWS Sunspot Numbers (1700 onwards)

The SWS sunspot number tables are based on the observed (definitive and provisional) monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels ( The observed values are smoothed using a 13 month running filter (the first and last values have half weighting). Estimated values have an "e" suffix and are calculated from observed monthly and predicted smoothed sunspot numbers. Observed smoothed values precede the estimated values, while predicted ... more