scholarly journals How does a Pinatubo‐size Volcanic Cloud Reach the Middle Stratosphere?

2021 ◽  
Author(s):  
Georgiy Stenchikov ◽  
Alexander Ukhov ◽  
Sergey Osipov ◽  
Ravan Ahmadov ◽  
Georg Grell ◽  
...  
Keyword(s):  
Volcanic Cloud ◽  
Middle Stratosphere

scholarly journals Modeling Volcanic Debris Clouds

Eos ◽  
2021 ◽  
Vol 102 ◽  
Author(s):  
Sarah Derouin
Keyword(s):  
Lower Stratosphere ◽  
Volcanic Cloud ◽  
Volcanic Debris ◽  
Middle Stratosphere

How does a large volcanic cloud get into the stratosphere? Scientists model how volcanic debris injected into the lower stratosphere can be lofted high into the middle stratosphere.

scholarly journals Near-real-time volcanic cloud monitoring: insights into global explosive volcanic eruptive activity through analysis of Volcanic Ash Advisories

2021 ◽  
Vol 83 (2) ◽  
Author(s):  
S. Engwell ◽  
L. Mastin ◽  
A. Tupper ◽  
J. Kibler ◽  
P. Acethorp ◽  
...  
Keyword(s):  
Real Time ◽  
Volcanic Activity ◽  
Volcanic Ash ◽  
Source Parameters ◽  
Volcanic Eruptions ◽  
Volcanic Hazards ◽  
Process Data ◽  
Cloud Monitoring ◽  
Satellite Sensors ◽  
Volcanic Cloud

AbstractUnderstanding the location, intensity, and likely duration of volcanic hazards is key to reducing risk from volcanic eruptions. Here, we use a novel near-real-time dataset comprising Volcanic Ash Advisories (VAAs) issued over 10 years to investigate global rates and durations of explosive volcanic activity. The VAAs were collected from the nine Volcanic Ash Advisory Centres (VAACs) worldwide. Information extracted allowed analysis of the frequency and type of explosive behaviour, including analysis of key eruption source parameters (ESPs) such as volcanic cloud height and duration. The results reflect changes in the VAA reporting process, data sources, and volcanic activity through time. The data show an increase in the number of VAAs issued since 2015 that cannot be directly correlated to an increase in volcanic activity. Instead, many represent increased observations, including improved capability to detect low- to mid-level volcanic clouds (FL101–FL200, 3–6 km asl), by higher temporal, spatial, and spectral resolution satellite sensors. Comparison of ESP data extracted from the VAAs with the Mastin et al. (J Volcanol Geotherm Res 186:10–21, 2009a) database shows that traditional assumptions used in the classification of volcanoes could be much simplified for operational use. The analysis highlights the VAA data as an exceptional resource documenting global volcanic activity on timescales that complement more widely used eruption datasets.

scholarly journals Real Time Volcanic Cloud Products and Predictions for Aviation Alerts

2014 ◽  
Author(s):  
Nickolay Krotkov ◽  
Shahid Habib ◽  
Arlindo da Silva ◽  
Eric Hughes ◽  
Kai Yang ◽  
...  
Keyword(s):  
Real Time ◽  
Volcanic Cloud

Identification of the Mount Hudson volcanic cloud over SE Australia

1992 ◽  
Vol 19 (12) ◽  
pp. 1211-1214 ◽  
Author(s):  
I. J. Barton ◽  
A. J. Prata ◽  
I. G. Watterson ◽  
S. A. Young
Keyword(s):  
Volcanic Cloud

scholarly journals Opportunistic validation of sulfur dioxide in the Sarychev Peak volcanic eruption cloud

2011 ◽  
Vol 4 (9) ◽  
pp. 1705-1712 ◽  
Author(s):  
S. A. Carn ◽  
T. M. Lopez
Keyword(s):  
Sulfur Dioxide ◽  
Limited Data ◽  
Ozone Monitoring Instrument ◽  
Spatial And Temporal Scales ◽  
Eruption Cloud ◽  
Kurile Islands ◽  
Volcanic Cloud ◽  
Ozone Monitoring ◽  
Lidar Observations ◽  
Sarychev Peak

Abstract. We report attempted validation of Ozone Monitoring Instrument (OMI) sulfur dioxide (SO2) retrievals in the stratospheric volcanic cloud from Sarychev Peak (Kurile Islands) in June 2009, through opportunistic deployment of a ground-based ultraviolet (UV) spectrometer (FLYSPEC) as the volcanic cloud drifted over central Alaska. The volcanic cloud altitude (~12–14 km) was constrained using coincident CALIPSO lidar observations. By invoking some assumptions about the spatial distribution of SO2, we derive averages of FLYSPEC vertical SO2 columns for comparison with OMI SO2 measurements. Despite limited data, we find minimum OMI-FLYSPEC differences within measurement uncertainties, which support the validity of the operational OMI SO2 algorithm. However, our analysis also highlights the challenges involved in comparing datasets representing markedly different spatial and temporal scales. This effort represents the first attempt to validate SO2 in a stratospheric volcanic cloud using a mobile ground-based instrument, and demonstrates the need for a network of rapidly deployable instruments for validation of space-based volcanic SO2 measurements.

The 2015 Calbuco Volcanic Cloud Detection Using GNSS Radio Occultation and Satellite Lidar

2020 ◽  
Author(s):  
Pierre-Yves Tournigand ◽  
Valeria Cigala ◽  
Alfredo J. Prata ◽  
Andrea K. Steiner ◽  
Gottfried Kirchengast ◽  
...  
Keyword(s):  
Radio Occultation ◽  
Cloud Detection ◽  
Volcanic Cloud
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