Utility of interplanetary scintillation maps in forecasting geomagnetic activity: A study based on single-station data from Cambridge, United Kingdom

Details Utility of interplanetary scintillation maps in forecasting geomagnetic activity: A study based on single-station data from Cambridge, United Kingdom Utility of interplanetary scintillation maps in forecasting geomagnetic activity: A study based on single-station data from Cambridge, United Kingdom

Mar 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994uism.rept.....l&link_type=abstract

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Astronomy and Astrophysics

Astronomy

Forecasting, Geomagnetism, Magnetic Disturbances, Magnetic Storms, Radio Astronomy, Radio Sources (Astronomy), Scintillation, Solar Wind, Astronomical Observatories, Real Time Operation, United Kingdom

Scientific paper

The Space Environment Laboratory, using interplanetary scintillation (IPS) data from the Mullard Radio Astronomy Observatory, Cambridge, UK, has investigated Hewish's suggestion that all-sky g-maps of the relative scintillation of radio sources can be used to forecast geomagnetic storms. On the basis of our analysis of more than 2 years of maps, we conclude that the single-station observations do not meet the criteria for a viable forecasting tool. The reasons are threefold: (1) the problems inherent in detecting and analyzing IPS events on maps that take 24 hours to complete; (2) serious questions about the quality of the IPS g-values; and (3) difficulties in interpreting two-dimensional IPS events as three-dimensional solar wind disturbances. These issues are discussed in detail, and recommendations are made for future work to demonstrate that IPS observations can be used for real-time forecasting.

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