The effect of cluster ions on anomalous VHF backscatter from the summer polar mesosphere

Details The effect of cluster ions on anomalous VHF backscatter from the summer polar mesosphere The effect of cluster ions on anomalous VHF backscatter from the summer polar mesosphere

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987georl..14.1031k&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 14, Oct. 1987, p. 1031-1034.

Other

126

Backscattering, Ion Density (Concentration), Mesosphere, Polar Regions, Very High Frequencies, Atmospheric Turbulence, Radar Scattering, Summer

Scientific paper

Radar backscatter at 50 MHz from the summer polar mesosphere is sometimes much stronger than the scatter from other latitudes at any time. Kelley and Ulwick (1987) suggested that heavy water cluster ions in this uniquely cold region of the atmosphere could be responsible because, in the presence of these ions, the enhanced, turbulence-driven spectrum of the ionization irregularities could extend to considerably shorter wavelengths than that of the neutral turbulence itself. Here, this idea is explored further and related to past and planned incoherent scatter measurements at EISCAT. These observations should be able to establish whether or not water cluster ions have an anomalously low diffusion coefficient.

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