Infrared measurements of atmospheric CH3CN
[1] 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 possib...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.621.3075 2023-05-15T15:02:48+02:00 Infrared measurements of atmospheric CH3CN Geoffrey C. Toon Bhaswar Sen Jean-françois L. Blavier Debra K. Weisenstein Paul O. Wennberg Chcn Citation Kleinböhl G. C. Toon B. Sen J. -f. L The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.621.3075 http://trs-new.jpl.nasa.gov/dspace/bitstream/2014/39240/1/05-2579.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.621.3075 http://trs-new.jpl.nasa.gov/dspace/bitstream/2014/39240/1/05-2579.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://trs-new.jpl.nasa.gov/dspace/bitstream/2014/39240/1/05-2579.pdf text ftciteseerx 2016-01-08T15:01:09Z [1] 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 Text Arctic Unknown Arctic |
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description |
[1] 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 |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Geoffrey C. Toon Bhaswar Sen Jean-françois L. Blavier Debra K. Weisenstein Paul O. Wennberg Chcn Citation Kleinböhl G. C. Toon B. Sen J. -f. L |
spellingShingle |
Geoffrey C. Toon Bhaswar Sen Jean-françois L. Blavier Debra K. Weisenstein Paul O. Wennberg Chcn Citation Kleinböhl G. C. Toon B. Sen J. -f. L Infrared measurements of atmospheric CH3CN |
author_facet |
Geoffrey C. Toon Bhaswar Sen Jean-françois L. Blavier Debra K. Weisenstein Paul O. Wennberg Chcn Citation Kleinböhl G. C. Toon B. Sen J. -f. L |
author_sort |
Geoffrey C. Toon |
title |
Infrared measurements of atmospheric CH3CN |
title_short |
Infrared measurements of atmospheric CH3CN |
title_full |
Infrared measurements of atmospheric CH3CN |
title_fullStr |
Infrared measurements of atmospheric CH3CN |
title_full_unstemmed |
Infrared measurements of atmospheric CH3CN |
title_sort |
infrared measurements of atmospheric ch3cn |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.621.3075 http://trs-new.jpl.nasa.gov/dspace/bitstream/2014/39240/1/05-2579.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
http://trs-new.jpl.nasa.gov/dspace/bitstream/2014/39240/1/05-2579.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.621.3075 http://trs-new.jpl.nasa.gov/dspace/bitstream/2014/39240/1/05-2579.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766334726414532608 |