Titlebook

left-ventricle

Middle Atmosphere Dynamics and Compositionan altitude of 100 km. Looking at Fig. 1, we see that the altitude extent of the middle atmosphere varies with latitude and season such that’, for example, the lower boundary of the middle atmosphere, the tropopause, is at about 17 km (about 80 mb) at the equator and at about 8 or 9 km at the pole (

切掉

Dynamics of the Thermosphere During Quiet and Disturbed Conditions external forcing. A simplified theory of the propagation and generation of acoustic-gravity waves and of planetary waves is outlined using the linearization of the hydrodynamic equations and the superposition of harmonic waves via a Fourier series of a Fourier integral. The main energy sources at t

虚弱的神经

Wind Induced Composition Effects at High Latitudesectively transport the lighter and minor species from the warmer toward the cooler regions on the globe. Due to the abundance of atomic oxygen a back pressure develops which significantly dampens the wind velocities and increases the temperature contrast. During summer and under magnetically disturb

预知

The Polar F-Region — Theorytric fields originating in the magnetosphere penetrate into the ionosphere and affect production, loss and transport of ionization there. Some of the polar F-region phenomena, as troughs, polar cap ionization etc. are discussed in the light of these processes.

CLAIM

Nonconformist

The Lower Ionosphere at High Latitudescerning the formation of these regions at lower latitudes. Processes operating at E-region heights during auroral events and at D-region heights during solar particle and electron precipitation events are considered. In addition, the growth of water cluster ions, H+. (H20)n, during conditions of low

Estimable

Techniques for Observing D Region Ionizationground and rocket. Observations of differential absorption and phase are discussed in some more detail than other techniques. The possible importance of in­coherent scatter observations also in the D region is pointed out. Better spatial resolution is obtained with probes carried on rockets. Some pr

小故事

Auroral Radio Absorption in Relation to Magnetospheric Particlesus orbit has been made. The results indicate that for the events studied the effective loss rate in the D region is directly proportional to the electron density, rather than, as is conventionally assumed, to the square of the electron density, i.e. under steady conditions the production rate q is g

conflate

Sciatica

Optical Emissions in the Polar Auroral E-Region molecular oxygen emissions in the airglow require a peak atomic oxygen concentration of about 1.E12 cm-3*. It is suggested that these emissions are excited in a two step process similar to the Barth mechanism for the green line. It is proposed that monitoring of the green line and the atmospheric b