Energy deposition of corpuscular radiation in the middle atmosphere

Details Energy deposition of corpuscular radiation in the middle atmosphere Energy deposition of corpuscular radiation in the middle atmosphere

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989maph...29..135k&link_type=abstract

In International Council of Scientific Unions, Middle Atmosphere Program. Handbook for MAP, Volume 29. Part 1: Extended Abstract

Computer Science

Energy Transfer, High Energy Electrons, Middle Atmosphere, Solar Corpuscular Radiation, Solar Cosmic Rays, Solar Cycles, Energy Spectra, Geomagnetism, Geosynchronous Orbits, Latitude, Magnetic Storms, Magnetospheric Instability, Night, Satellite Observation

Scientific paper

Main components of corpuscular radiation contributing to energy deposition (ED in eV/cu cm/s) in the atmosphere (10 to 100 km) are cosmic ray nuclei (CR - galactic and solar) and high energy electrons (HEE), mainly of magnetospheric origin. Galactic CR depending on solar cycle phase and latitude are dominant source of ED by corpuscular radiation below 50 to 60 km. Below 20 km secondaries must be assumed. More accurate treatment need assuming of individual HE solar flare particles, cut off rigidities in geomagnetic field and their changes during magnetospheric disturbances. Electrons E sub e greater than 30 keV of magnetospheric origin penetrating to atmosphere contribute to production rate below 100 km especially on night side. High temporal variability, local time dependence and complicated energy spectra lead to complicated structure of electron ED rate. Electrons of MeV energy found at geostationary orbit, pronouncing relation to solar and geomagnetic activity, cause maximum ED at 40 to 60 km. Monitoring the global distribution of ED by corpuscular radiation in middle atmosphere need continuing low altitude satellite measurements of both HEE and x ray BS from atmosphere as well as measurements of energy spectra and charge composition of HE solar flare particles.

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