Abstract
The physical processes underlying several phenomena of upper-atmospheric storms are described: magnetospherically driven ion convection and Joule heating and their impact on the high-latitude thermosphere and ionosphere; global changes in thermospheric circulation and composition; traveling atmospheric disturbances; and effects of electric-field penetration to middle and low latitudes. Examples from the 1997 January 10-11 storm are used to illustrate some of these features. It is pointed out that not only the magnitude, but also the sign of many storm-time changes at any given location depend sensitively on the temporal and spatial variations of auroral particle precipitation and high-latitude electric fields. In order for simulation models to be able to predict upper-atmospheric storm effects accurately, improved determination of the high-latitude inputs will be required. (C) 2000 Elsevier Science Ltd. All rights reserved.
| Original language | English |
|---|---|
| Pages (from-to) | 1115-1127 |
| Number of pages | 13 |
| Journal | Journal of Atmospheric and Solar-Terrestrial Physics |
| Volume | 62 |
| Issue number | 12 |
| DOIs | |
| State | Published - 2000 |
Keywords
- Magnetic storms
- Magnetospheric disturbances
- Upper-atmospheric effects