Physics
Scientific paper
Jun 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998georl..25.1875c&link_type=abstract
Geophysical Research Letters, Volume 25, Issue 11, p. 1875-1878
Physics
28
Atmospheric Composition And Structure: Middle Atmosphere-Composition And Chemistry, Atmospheric Composition And Structure: Middle Atmosphere-Energy Deposition, Interplanetary Physics: Solar Cycle Variations, Magnetospheric Physics: Energetic Particles, Precipitating
Scientific paper
NOAA 12 precipitating electron data has been examined together with ISAMS observations of nighttime NO2 during electron events in November 1991 and May 1992. Energy deposition calculations suggest the significant formation of NOy during these events near 0.1 mbar and for 60°-80° latitude. ISAMS confirms increases of NO2 from zonally averaged values of ~1-5 ppbv prior to the events to values in excess of 30-40 ppbv with local maxima in excess of 140 ppbv. The increases occur within 2-3 days and are generally consistent with the calculated NOy formation rates due precipitating electrons. ISAMS data indicate the subsequent transport of the NO2 into the stratosphere affecting NO2 mixing ratios below 1 mbar and down to latitudes of ~30° to 40° in both hemispheres.
Callis Linwood B.
Lambeth James D.
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