Evidence for two different structuring and scattering mechanisms and the associated role of aerosols in the polar summer mesosphere

Details Evidence for two different structuring and scattering mechanisms and the associated role of aerosols in the polar summer mesosphere Evidence for two different structuring and scattering mechanisms and the associated role of aerosols in the polar summer mesosphere

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993georl..20.2307u&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 20, no. 20, p. 2307-2310

Computer Science

Sound

11

Aerosols, Atmospheric Boundary Layer, Electron Density (Concentration), Mesosphere, Mixing Layers (Fluids), Polar Regions, Radar Echoes, Radar Scattering, Turbulent Flow, Arcas Rocket Vehicles, Electrical Measurement, Horizontal Distribution, Plasma Probes, Radar Measurement, Radio Frequencies, Rocket-Borne Instruments, Sounding Rockets

Scientific paper

A Super Arcas rocket, MISTI B, was launched as part of the Polar Mesospheric Summer Echoes (PMSE) salvo to measure electron density irregularities using rf and dc probes. Large and small scale structures in the electron density were measured on rocket ascent and descent at the altitudes of 86.5 and 88.5 +/- .5 km. Since the rocket apogee was 89 km, the rocket was in the height range 88.5 +/- .5 km for 30 seconds giving us an unusual measurement of horizontal structure over a distance of 5.5 km. A power spectrum of the fluctuations for the upper layer gives further evidence that turbulent mixing is an important process in PMSE. The power spectrum of the lower layer, however, gives evidence that this layer is characterized by a form of partial or Fresnel scattering. Both spectra are in excellent agreement with similar analysis of electron fluctuation spectra measured in the same layers on the TURBO-B rocket flown 12 minutes later and the analysis of Cornell University Portable Radar Interferometer (CUPRI) data by Cho et al., 1993A. Thus two different structuring and scattering mechanisms exist at altitudes only 1 km apart. Using the simultaneous dc and rf probe measurements of electron depletions and sharp gradients in the lower layer, we speculate on the role of aerosols in creating these depletions and gradients.

Affiliated with

Also associated with

No associations

Rating

Evidence for two different structuring and scattering mechanisms and the associated role of aerosols in the polar summer mesosphere does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Evidence for two different structuring and scattering mechanisms and the associated role of aerosols in the polar summer mesosphere, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evidence for two different structuring and scattering mechanisms and the associated role of aerosols in the polar summer mesosphere will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1327006