The ionosphere - Morphology, development and coupling

Details The ionosphere - Morphology, development and coupling The ionosphere - Morphology, development and coupling

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jatp...49..777w&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 49, July-Aug. 1987, p. 777-808.

Physics

9

Auroral Zones, Ionospheric Disturbances, Lower Ionosphere, Winter, D Region, E Region, Europe, Ground Stations, Noaa Satellites, Stratosphere, Stratospheric Warming

Scientific paper

The morphology of the MAP/WINE winter is examined, principally from ground-based and satellite observations. Winter anomaly is evident, occurring in bursts with a west to east shift in time. Auroral activity, particularly with reference to the times of major rocket salvoes, is generally low, with Andoya to the south of the auroral boundary in most cases. Minor stratospheric warmings, of which four occurred, are found to correlate with minima in radio wave absorption. Using data from a broad sector of Europe, coupling between the lower thermosphere and mesosphere is seen over large areas. Westerly winds are associated with high absorption (winter anomaly) and reversal to easterly winds with stratospheric warmings and low absorption. It is found possible to select cases, from amongst the MT series of rocket launchings, corresponding to quiet conditions, stratospheric warming, winter anomaly, and particle precipitation in the general absence of other effects. The observed effects all point to transport being a major factor, and the need to measure vertical transport over the range of geophysical conditions examined is highlighted.

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