Evidence of transport, sedimentation and coagulation mechanisms in the relaxation of post-volcanic stratospheric aerosols
Spatio-temporal distributions of stratospheric aerosols, measured by the ORA instrument from August 1992 until May 1993, are presented in the latitude range (40° S–40° N). Particle total number density, mode radius and distribution width are derived and interpreted. The respective roles of a...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2001-09-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/19/1157/2001/angeo-19-1157-2001.pdf |
| Summary: | Spatio-temporal
distributions of stratospheric aerosols, measured by the ORA instrument from
August 1992 until May 1993, are presented in the latitude range (40° S–40°
N). Particle total number density, mode radius and distribution width are
derived and interpreted. The respective roles of advection, sedimentation and
coagulation are discussed. We also identify clear transport/sedimentation
patterns and we show the enhancement of coagulation in stagnation regions.
Efficient transport of aerosol particles up to 50 km is suggested.<br><br><b>Key words. </b>Atmospheric composition
and structure (aerosols and particles; middle atmosphere-composition and
chemistry; volcanic effects) |
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| ISSN: | 0992-7689 1432-0576 |