Results 31 to 40 of about 24,110 (329)

Variability of the Aerosol Content in the Tropical Lower Stratosphere from 2013 to 2019: Evidence of Volcanic Eruption Impacts

Atmosphere, 2022
This paper quantifies the tropical stratospheric aerosol content as impacted by volcanic events over the 2013–2019 period. We use global model simulations by the Whole Atmosphere Community Climate Model (WACCM) which is part of the Community Earth System
Mariam Tidiga, Gwenaël Berthet, Fabrice Jégou, Corinna Kloss, Nelson Bègue, Jean-Paul Vernier, Jean-Baptiste Renard, Adriana Bossolasco, Lieven Clarisse, Ghassan Taha, Thierry Portafaix, Terry Deshler, Frank G. Wienhold, Sophie Godin-Beekmann, Guillaume Payen, Jean-Marc Metzger, Valentin Duflot, Nicolas Marquestaut   +17 more
doaj   +1 more source

Exploring Io's atmospheric composition with APEX: first measurement of 34SO2 and tentative detection of KCl [PDF]

, 2013
The composition of Io's tenuous atmosphere is poorly constrained. Only the major species SO2 and a handful of minor species have been positively identified, but a variety of other molecular species should be present, based on thermochemical equilibrium ...
Black, J., Butler, B., Gurwell, M., Lellouch, E., Moreno, R., Moullet, A.   +5 more
core   +2 more sources

VOLCANO₃ – a Miniaturized Chemiluminescence Ozone Monitor for Drone-Based Measurements in Volcanic Plumes [PDF]

Atmospheric Measurement Techniques
High levels of bromine monoxide (BrO) observed in volcanic plumes indicate significant catalytic destruction of tropospheric ozone (O3) at local to regional scales.
M. Rüth, M. Rüth, N. Bobrowski, N. Bobrowski, E. Bräutigam, A. Nies, J. Kuhn, T. Hoffmann, N. Karbach, B. Geil, R. Kleinschek, S. Schmitt, U. Platt   +12 more
doaj   +1 more source

Geometric estimation of volcanic eruption column height from GOES-R near-limb imagery – Part 2: Case studies [PDF]

Atmospheric Chemistry and Physics, 2021
In a companion paper (Horváth et al., 2021), we introduced a new technique to estimate volcanic eruption column height from extremely oblique near-limb geostationary views.
Á. Horváth, O. A. Girina, J. L. Carr, D. L. Wu, A. A. Bril, A. A. Mazurov, D. V. Melnikov, G. A. Hoshyaripour, S. A. Buehler   +8 more
doaj   +1 more source

Electrical Charging of Volcanic Plumes

Space Science Reviews, 2008
Many explosive terrestrial volcanic eruptions are accompanied by lightning and other atmospheric electrical phenomena. The plumes produced generate large perturbations in the surface atmospheric electric potential gradient and high charge densities have been measured on falling volcanic ash particles.
James, M. R., Wilson, L., Lane, Stephen, Gilbert, J. S., Mather, T. A., Harrison, R. G., Martin, R. S.   +6 more
openaire   +1 more source

SO₂ depletion in tropospheric volcanic plumes [PDF]

Geophysical Research Letters, 2004
Ground based remote sensing techniques are used to measure volcanic SO2 fluxes in efforts to characterise volcanic activity. As these measurements are made several km from source there is the potential for in‐plume chemical transformation of SO2 to sulphate aerosol (conversion rates are dependent on meteorological conditions), complicating ...
McGonigle, Andrew, Delmelle, Pierre, Oppenheimer, Clive, Tsanev, Vitchko, Delfosse, Thomas, Williams-Jones, Glyn, Horton, Keith, Mather, Tamsin   +7 more
openaire   +2 more sources

Quantifying the Effect of Wind on Volcanic Plumes: Implications for Plume Modeling

Journal of Geophysical Research: Atmospheres, 2023
AbstractThe considerable effects that wind can have on estimates of mass eruption rates (MERs) in explosive eruptions based on volcanic plume height are well known but difficult to quantify rigorously. Many explicitly wind‐affected plume models have the additional difficulty that they require the use of centerline heights of bent‐over plumes, a ...
Tobias Dürig, Magnús T. Gudmundsson, Fabio Dioguardi, Louise Steffensen Schmidt   +3 more
openaire   +4 more sources

A model for large-scale volcanic plumes on Io: Implications for eruption rates and interactions between magmas and near-surface volatiles. [PDF]

, 2002
Volcanic plumes deposit magmatic pyroclasts and SO2 frost on the surface of Io. We model the plume activity detected by Galileo at the Pillan and Pele sites from 1996 to 1997 assuming that magmatic eruptions incorporate liquid SO2 from near-surface ...
Cataldo, Enzo, Gilbert, Jennie, Lane, Steve, Wilson, Lionel   +3 more
core   +1 more source

DNS of compressible multiphase flows through the Eulerian approach [PDF]

, 2014
In this paper we present three multiphase flow models suitable for the study of the dynamics of compressible dispersed multiphase flows. We adopt the Eulerian approach because we focus our attention to dispersed (concentration smaller than 0.001) and ...
Luigi C. Berselli, Maria Vittoria Salvetti, Matteo Cerminara, Scuola Normale Superiore, Tomaso Esposti Ongaro   +4 more
core   +1 more source

Electrification of volcanic plumes

Surveys in Geophysics, 2006
Volcanic lightning, perhaps the most spectacular consequence of the electrification of volcanic plumes, has been implicated in the origin of life on Earth, and may also exist in other planetary atmospheres. Recent years have seen volcanic lightning detection used as part of a portfolio of developing techniques to monitor volcanic eruptions.
Mather, T, Harrison, R
openaire   +2 more sources