Cupri observations of PMSE during Salvo B of NLC‐91: Evidence of both partial reflection and turbulent scatter

John Y.N. Cho, Wesley E. Swartz, Michael C. Kelley, Clark A. Miller

Research output: Contribution to journalArticle

35 Scopus citations

Abstract

During the first rocket sequence (called Salvo B) of the NLC‐91 campaign, the Cornell University Portable Radar Interferometer (CUPRI) observed two simultaneously occurring layers of Polar Mesosphere Summer Echoes (PMSE). During the time of the Turbo B flight, the high time‐resolution CUPRI Doppler spectra exhibited sawtooth‐like discontinuities in the lower layer which we interpret to be a distorted partial reflection layer which was advected across the radar beam. The upper layer, on the other hand, appeared to be caused by turbulent scatter and we estimate the turbulence energy dissipation rate in the upper layer at the time of the Turbo B flight to have been approximately 0.04 W/kg. Furthermore, a shift in the antenna beam direction from vertical to 8° off zenith revealed an aspect sensitivity of approximately 5 dB in the lower layer but none in the upper layer. We conclude that, at this particular time, turbulent scatter was responsible for the upper layer while some form of partial reflection was dominant in the lower layer.

Original languageEnglish (US)
Pages (from-to)2291-2294
Number of pages4
JournalGeophysical Research Letters
Volume20
Issue number20
DOIs
StatePublished - Oct 22 1993
Externally publishedYes

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

Fingerprint Dive into the research topics of 'Cupri observations of PMSE during Salvo B of NLC‐91: Evidence of both partial reflection and turbulent scatter'. Together they form a unique fingerprint.

  • Cite this