Ionospheric absorption, typical ionization, conductivity, and possible synoptic heating parameters in the upper atmosphere
Relations for the average energetic particle heating and the typical Hall and Pedersen conductances, as functions of the ground-based Hf radio absorption, are determined. Collis and coworkers used the geosynchronous GEOS 2 particle data to relate or ''calibrate'' the auroral absorption on the same magnetic field lines with five levels of D region ionization. These ionospheric models are related to a Chapman layer that extends these models into the E region. The average energetic particle heating is calculated for each of these models using recent expressions for the effective recombination coefficient. The corresponding height-integrated heating rates are determined and related to the absorption with a quadratic expression. The average Hall and Pedersen conductivities are calculated for each of the nominal absorption ionospheric models. The corresponding height-integrated conductances for nighttime conditions are determined and related to the absorption. Expressions for these conductances during disturbed sunlit conditions are also determined. These relations can be used in conjunction with simultaneous ground-based riometric and magnetic observations to determines the average Hall and Pedersen currents and the Joule heating. The typical daily rate of temperature increase in the mesosphere for storm conditions is several 10 K for both the energetic particle and the Joule heating. The increasing importance of these parameters of the upper and middle atmospheres is discussed. It is proposed that northern hemisphere ionospheric, current, and heating synoptic models and parameters be investigated for use on a regular basis. copyright American Geophysical Union 1989
- Research Organization:
- Geophysics Division, Geological Survey of Canada, Energy, Mines and Resources, Ottawa, Ontario
- OSTI ID:
- 6068491
- Journal Information:
- J. Geophys. Res.; (United States), Vol. 94:A4
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GENERAL PHYSICS
IONOSPHERE
ENERGY ABSORPTION
ELECTRIC CONDUCTIVITY
IONIZATION
JOULE HEATING
ABSORPTION
EARTH ATMOSPHERE
ELECTRIC HEATING
ELECTRICAL PROPERTIES
HEATING
PHYSICAL PROPERTIES
PLANETARY IONOSPHERES
PLASMA HEATING
RESISTANCE HEATING
640201* - Atmospheric Physics- Auroral
Ionospheric
& Magetospheric Phenomena