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Location of stations and their nomenclature. Cotopaxi volcano (left): 1 Mariscal (Mar), 2 Machachi 1 (Ma1), 3 Jambelí (Jam), 4 Machachi 2 (Ma2), 5 Obelisco (Obe), 6 Aloag (Alo), 7 Santa Ana (San), 8 Gualilagua (Gua), 9 Tiopullo (Tio), 10 Progreso (Pro), 11 Entrada Sur (Ent), 12 Instituto Geofísico (Ins), 13 Agualongo (Agu), 14 BNAS. Tungurahua volcano (right): 1 Choglontus (Cho), 2 Palictahua (Pal), 3 Pillate (Pil), 4 Runtun (Run)
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![Figure 3: Tungurahua volcano. Eruption on 01-Feb-2014. Detected [18]...](profile/Rene-Parra/publication/334093962/figure/fig3/AS:774768659816450@1561730651940/Tungurahua-volcano-Eruption-on-01-Feb-2014-Detected-18-versus-modeled-volcanic-ash_Q320.jpg)
Volcanic ash produces air pollution and other impacts. Regions potentially affected require information about the possible ash dispersion trajectories and affected zones by ash fallout. In the last 19 years, five volcanoes in Ecuador have produced moderate to large explosive eruptions. So, information about the volcanic ash dispersion in forecastin...
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Context 1
... above mean sea level when the pressure at sea level is 1013.2 mb (e.g., FL300 = 30 000 feet, ≈ 9.1 km). We compared the modeled ash fallout results with records from ash meters around these volcanoes (4 stations for Tungurahua, 14 stations for Cotopaxi), which are operated by the Instituto Geofísico de la Escuela Politécnica Nacional [4,11] (Fig. 2). 3 RESULTS Although with differences, for all the spatial resolutions, the direction of modeled ash clouds was consistent with the course of the detected clouds. As an example, Figs. 3 and 4 show the detected the corresponding computed ash clouds, for the eruptions at Tungurahua on 01-Feb-2014, and Cotopaxi on 14-Aug-2015 ...
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