ИСТИНА

Storm-time precipitation of energetic electrons at high latitudes disturbs globally the thermosphere-ionosphere system. Recent years, unusual dynamic's of ionospheric response was found during major magnetic storms. The dynamics resulted mainly from anomalous expansion and displacement of the precipitation region toward equator because of acceleration in the secular variation of the geomagnetic field. A revision of the precipitation location and power is required in order to adjust the existing first principles global coupled thermosphere-ionosphere models to the observations of unusual disturbances in the ionosphere and thermosphere. In the first time, we combine low-energy spectra of electrons measured by the DMSP satellites in the auroral region with high-energy spectra observed by the POES satellites in the outer radiation belt. This combination allows specifying of the total energy deposition of electron precipitations. The location of the precipitation region is determined from both LEO satellite observations and magnetic data on the auroral electrojet acquired from the global network of ground based magnetometers. This approach gives new insight to the problem of magnetosphere-ionosphere coupling and help to improve the prediction of space weather models.