Computer Science – Sound
Scientific paper
Jun 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983esasp.183..167z&link_type=abstract
In ESA Sixth ESA Symp. on European Rocket and Balloon Programs and Related Res. p 167-171 (SEE N83-33397 21-46)
Computer Science
Sound
Neutral Gases, Rocket Sounding, Ultraviolet Photometry, Vertical Distribution, Aeronomy, Atmospheric Composition, Atmospheric Scattering, Mass Spectrometers, Rocket-Borne Instruments
Scientific paper
Rocket and balloon-borne techniques for in-situ measurement of the vertical distribution of neutral gas constituents are reviewed. The Selective Optical Atmospheric Probe (SOAP) for middle atmosphere studies is introduced. The first version of SOAP was instrumented for noctilucent cloud studies and carried a pair of polarization photometers. Ionization chambers for observing direct solar UV radiation were used to extend the density measurements upward. The UV experiments failed due to contamination of optical surfaces during countdown. Purging with dry N2 solved this problem for SOAP 2. Optical active techniques prove useful in the measurement of minor constituents with high accuracy and precision. Study of the resonance scattering of air with a Kr line source indicates that with instrumental difficulties overcome, neutral density probes can deliver high resolution density profiles between 50 and 80 km.
Lundin Andreas
Witt Georg
Zuber A.
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