Physics
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3223807k&link_type=abstract
Geophysical Research Letters, Volume 32, Issue 23, CiteID L23807
Physics
5
Atmospheric Composition And Structure: Ion Chemistry Of The Atmosphere (2419, 2427), Atmospheric Composition And Structure: Middle Atmosphere: Constituent Transport And Chemistry (3334), Atmospheric Processes: Remote Sensing
Scientific paper
For the first time CH3CN has been measured in the Earth's atmosphere by means of infrared remote sensing. Vertical profiles of volume mixing ratio were retrieved from 12 solar occultation measurements by the balloon-borne JPL MkIV interferometer between 1993 and 2004. Profile retrieval is possible in an altitude range between 12 and 30 km with a precision of ~20 ppt in the Arctic and ~30 ppt at mid-latitudes. The retrieved CH3CN profiles show mixing ratios of 100-150 ppt a few kilometers above the tropopause that decrease to values below 40 ppt at altitudes between 22 and 30 km. The CH3CN mixing ratios show a reasonably compact correlation with the stratospheric tracers CH3Cl and CH4. The CH3CN altitude profiles and tracer correlations are well reproduced by a 2-dimensional model, suggesting that CH3CN is long-lived in the lower stratosphere and that previously-proposed ion-molecule reactions do not play a major role as loss processes of CH3CN.
Blavier Jean-François L.
Kleinbohl Armin
Sen Bhaswar
Toon Geoffrey C.
Weisenstein Debra K.
No associations
LandOfFree
Infrared measurements of atmospheric CH3CN 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 Infrared measurements of atmospheric CH3CN, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared measurements of atmospheric CH3CN will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1432476