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Publisher DOI: 10.5194/acp-8-6655-2008
Title: SO2 emissions from Popocatépetl volcano : emission rates and plume imaging using optical remote sensing techniques
Language: English
Authors: Grutter, Michel 
Basaldud, Roberto 
Rivera, Claudia 
Harig, Roland 
Junkerman, W. 
Caetano, Ernesto 
Delgado Granados, Hugo 
Issue Date: 18-Nov-2008
Publisher: European Geosciences Union
Source: Atmospheric Chemistry and Physics 22 (8): 6655-6663 (2008)
Journal or Series Name: Atmospheric chemistry and physics 
Abstract (english): Sulfur diOxide emissions from the Popocatépetl volcano in central Mexico were measured during the MILAGRO field campaign in March 2006. A stationary scanning DOAS (Differential Optical Absorption Spectrometer) was used to monitor the SO2 emissions from the volcano and the results were compared with traverses done with a COSPEC from the ground and a DOAS instrument on board an ultra-light aircraft. Daytime evolutions as well as day-today variation of the SO2 emissions are reported. A value of 2.45±1.39 Gg/day of SO2 is reported from all the daily averages obtained during the month of March 2006, with large variation in maximum and minimum daily averages of 5.97 and 0.56 Gg/day, respectively. The large short-term fluctuations in the SO2 emissions obtained could be confirmed through 2-D visualizations of the SO2 plume measured with a scanning imaging infrared spectrometer. This instrument, based on the passive detection of thermal radiation from the volcanic gas and analysis with FTIR spectrometry, is used for the first time for plume visualization of a specific volcanic gas. A 48-h forward trajectory analysis indicates that the volcanic plume was predominantly directed towards the Puebla/Tlaxcala region (63%), followed by the Mexico City and Cuernavaca/Cuautla regions with 19 and 18% occurrences, respectively. 25% of the modeled trajectories going towards the Puebla region reached altitudes lower than 4000 m a.s.l. but all trajectories remained over this altitude for the other two regions. © Author(s) 2008.
DOI: 10.15480/882.2325
ISSN: 1680-7316
Institute: Elektrische Energietechnik E-6 
Type: (wissenschaftlicher) Artikel
Funded by: National Park Service
Project: NOVAC (Network for Observation of Volcanic and Atmospheric Change) project 
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