Computer Science – Sound
Scientific paper
Feb 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.319..570t&link_type=abstract
Nature (ISSN 0028-0836), vol. 319, Feb. 13, 1986, p. 570, 571. NASA-supported research.
Computer Science
Sound
43
Atmospheric Composition, Atmospheric Sounding, Infrared Spectroscopy, Nitrogen Oxides, Spacelab Payloads, Stratosphere, Absorption Spectroscopy, Molecular Spectroscopy, Ozone, Photolysis, Remote Sensing, Trace Elements
Scientific paper
Measurements of N2O5 absorption (1230 and 1260 per cm) in infrared spectra were carried out using the Atmospheric Trace Molecule Spectroscopy (ATMOS) instruments on board Spacelab 3. The detection of stratospheric N2O5, a temporary reservoir species whose photolysis products catalyze ozone destruction, was confirmed. Preliminary analysis of spectra recorded at sunrise on 1 May 1985 indicates a peak volume mixing ratio of 1.6 x 10 the -9th at 35 km an altitude of 35 km, or a broad concentration peak pf 4 x 10 to the 8th molecules per cu cm between 21 and 35 km. Absorption was not detected in spectra measured at sunset due to the depletion of N2O5 by photolysis during the day. The volume mixing ratio profile of N2O5 between 0 and 75 km altitude is reproduced in graphic form.
Farmer Crofton B.
Norton Heather R.
Toon Geoffrey C.
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