On Short-Time Prediction of Geomagnetic Activity

Details On Short-Time Prediction of Geomagnetic Activity On Short-Time Prediction of Geomagnetic Activity

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsm43a1149l&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SM43A-1149

Physics

2134 Interplanetary Magnetic Fields, 2447 Modeling And Forecasting, 2722 Forecasting

Scientific paper

Prediction of geomagnetic activity is one of important tasks related to Space Weather Program. Global geomagnetic activity is controlled by solar wind parameters, the conditions in the magnetosphere and ionosphere (which are dependent on previous geomagnetic activity), season, and universal time. We developed an approach, which allowed us to improve significantly the reliability of short-time geomagnetic activity forecast. We used a solar wind-geomagnetic activity coupling function that is some different from the Akasofu parameter and proportional to V*f(Bz) where V is solar wind speed and f(Bz) is a step-like function dependent on the IMF Bz component and season/UT conditions. The correlation coefficient for hourly values of this coupling function and the AL index is higher than 0.8. Moreover, it increases significantly if instead of the AL index we used a geomagnetic activity index including geomagnetic disturbances at both high and low latitudes. Such index shows the excellent correlation with the solar wind-geomagnetic activity coupling function; the correlation coefficient is about 0.9 and higher.

Affiliated with

Also associated with

No associations

Rating

On Short-Time Prediction of Geomagnetic Activity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with On Short-Time Prediction of Geomagnetic Activity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On Short-Time Prediction of Geomagnetic Activity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1469418