S
Sandra Wallis
Researcher at University of Greifswald
Publications - 9
Citations - 62
Sandra Wallis is an academic researcher from University of Greifswald. The author has contributed to research in topics: Stratosphere & Vulcanian eruption. The author has an hindex of 2, co-authored 3 publications receiving 16 citations.
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Journal ArticleDOI
Particle aging and aerosol–radiation interaction affect volcanic plume dispersion: evidence from the Raikoke 2019 eruption
Lukas Muser,Gholam Ali Hoshyaripour,Julia Bruckert,Ákos Horváth,Elizaveta Malinina,Sandra Wallis,Fred Prata,Alexei Rozanov,Christian von Savigny,Heike Vogel,Bernhard Vogel +10 more
TL;DR: In this article, the authors used the ICON-ART global modeling system for the simulation of volcanic aerosol dispersion after the Raikoke eruption in June 2019, and validated the simulation results with measurements from AHI (Advanced Himawari Imager), CALIOP (Cloud-Aerosol Lidar with Orthogonal Polarization), and OMPS-LP (Ozone Mapping and Profiling Suite-Limb Profiler).
Journal ArticleDOI
Changes in stratospheric aerosol extinction coefficient after the 2018 Ambae eruption as seen by OMPS-LP and MAECHAM5-HAM
Elizaveta Malinina,Alexei Rozanov,Ulrike Niemeier,Sandra Wallis,Carlo Arosio,Felix Wrana,Claudia Timmreck,Christian von Savigny,John P. Burrows +8 more
TL;DR: In this article, the authors compared changes in the stratospheric aerosol loading after the 2018 Ambae eruption observed by satellite remote sensing measurements and simulated by a global aerosol model.
Dispersion and Aging of Volcanic Aerosols After the La Soufrière Eruption in April 2021
Julia Bruckert,Lutz Hirsch,Andras Horvath,Ralph A. Kahn,Tobias Kölling,Lukas Muser,Claudia Timmreck,Heike Vogel,Sandra Wallis,Gholam Ali Hoshyaripour +9 more
TL;DR: In this article , the authors explore the ash aerosol aging and sulfate production during the first 4 days following the 2021 La Soufrière (St. Vincent) eruption with the ICON-ART model (ICOsahedral nonhydrostatic model with Aerosol and Reactive Trace gases).
Journal ArticleDOI
Impact of a strong volcanic eruption on the summer middle atmosphere in UA-ICON simulations
TL;DR: In this article , the authors used the upper-Atmospheric ICOsahedral non-hydrostatic (UA-ICON) model to simulate the atmospheric response to an idealized strong volcanic injection of 20 Tg/S into the stratosphere (about twice as much as the eminent 1991 Pinatubo eruption).
Posted ContentDOI
Estimating the impact of the 1991 Pinatubo eruption on mesospheric temperature by analyzing HALOE (UARS) temperature data
TL;DR: In this paper, the authors analyzed the impact of the Pinatubo eruption on the mesosphere by analyzing solar occultation temperature data from the Halogen Occultation Experiment (HALOE) instrument on the Upper Atmosphere Research Satellite (UARS).