HR: 1400h
AN: A33A-14    [Abstracts]
TI: Optical remote sensing of the SO2 plume from Popocatepetl volcano (Mexico): 2D visualization and flux estimations
AU: * Basaldud, R
EM: basaldud@hotmail.com
AF: Centro de Ciencias de la Atmosfera, Universidad Nacinal Autonoma de Mexico (UNAM), Mexico, DF 04510, Mexico
AU: Grutter, M
EM: grutter@servidor.unam.mx
AF: Centro de Ciencias de la Atmosfera, Universidad Nacinal Autonoma de Mexico (UNAM), Mexico, DF 04510, Mexico
AU: Baumgardner, D
AF: Centro de Ciencias de la Atmosfera, Universidad Nacinal Autonoma de Mexico (UNAM), Mexico, DF 04510, Mexico
AU: Harig, R
AF: Institut fuer Messtechnik, Technische Universitaet Hamburg-Harburg, Hamburg, 21079, Germany
AU: Junkerman, W
AF: Institute of Meteorology and Climate Research, Atmospheric Environmental Division, Forschungszentrum Karlsruhe, Garmisch-Partenkirch, 82467, Germany
AU: Rivera-Cardenas, C
AF: Department of Radio and Space Science, Chalmers University of Technology, Gothenburg, 41296, Sweden
AU: Delgado, H
AF: Instituto de Geofisica, Universidad Nacinal Autonoma de Mexico (UNAM), Mexico, DF 04510, Mexico
AU: Woehrnschimmel, H
AF: Centro Nacional de Investigacion y Capacitacion Ambiental (CENICA), INE-SEMARNAT, Mexico, DF 04530, Mexico
AB: Popocatepetl volcano (19.023N, 98.622W, 5452 masl) is a passively degassing eruptive volcano with a current average emission of 5 kt/d of sulfur dioxide, which is located in the central front of the Mexican Transvolcanic Belt . It is approx. 60 km SE of Mexico City and 45 km NW from Puebla City. SO2 emissions from the volcano are known to interact with urban pollution playing a role in the atmospheric chemistry and the formation of particles. Optical remote sensing techniques were deployed during March 2006 to study the dispersion of the volcanic plume and to quantify the SO2 fluxes. A Scanning Infrared Gas Imaging System (SIGIS) was used to acquire passive IR spectra at 4 cm-1 resolution in a two-dimensional array, from which a false-color image was produced representing the degree of correlation of a specific gaseous pollutant. A real-life animation of the SO2- distribution from the volcanic plume allows understanding dispersion phenomena in various atmospheric conditions. Passive DOAS instruments installed both on ground and from an ultra-light aircraft, allowed for discrete SO2 column measurements below the plume. Flux estimations were done using wind profiles from balloons launched periodically
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
DE: 0365 Troposphere: composition and chemistry
DE: 0370 Volcanic effects (8409)
SC: Atmospheric Sciences [A]
MN: 2007 Joint Assembly