Rapid ozone depletion after humidification of the stratosphere by the Hunga Tonga Eruption.

Autor: Evan S; Laboratoire de l'Atmosphère et des Cyclones (LACy), UMR8105, CNRS, Université de La Réunion, Météo-France, Saint-Denis, France., Brioude J; Laboratoire de l'Atmosphère et des Cyclones (LACy), UMR8105, CNRS, Université de La Réunion, Météo-France, Saint-Denis, France., Rosenlof KH; NOAA Chemical Sciences Laboratory, Boulder, CO, USA., Gao RS; NOAA Chemical Sciences Laboratory, Boulder, CO, USA., Portmann RW; NOAA Chemical Sciences Laboratory, Boulder, CO, USA., Zhu Y; NOAA Chemical Sciences Laboratory, Boulder, CO, USA.; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA., Volkamer R; Department of Chemistry and Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA., Lee CF; Department of Chemistry and Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA., Metzger JM; Observatoire des Sciences de l'Univers de la Réunion, UAR 3365 (CNRS, Université de la Réunion, Météo-France), Saint-Denis, France., Lamy K; Laboratoire de l'Atmosphère et des Cyclones (LACy), UMR8105, CNRS, Université de La Réunion, Météo-France, Saint-Denis, France., Walter P; St. Edward's University, Austin, TX, USA., Alvarez SL; University of Houston, Houston, TX, USA., Flynn JH; University of Houston, Houston, TX, USA., Asher E; NOAA Chemical Sciences Laboratory, Boulder, CO, USA.; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA., Todt M; Finnish Meteorological Institute, Helsinki, Finland., Davis SM; NOAA Chemical Sciences Laboratory, Boulder, CO, USA., Thornberry T; NOAA Chemical Sciences Laboratory, Boulder, CO, USA., Vömel H; National Center for Atmospheric Research, Boulder, CO, USA., Wienhold FG; Swiss Federal Institute of Technology (ETH), Zurich, Switzerland., Stauffer RM; Atmospheric Chemistry and Dynamics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA., Millán L; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA., Santee ML; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA., Froidevaux L; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA., Read WG; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA.
Jazyk: angličtina
Zdroj: Science (New York, N.Y.) [Science] 2023 Oct 20; Vol. 382 (6668), pp. eadg2551. Date of Electronic Publication: 2023 Oct 20.
DOI: 10.1126/science.adg2551
Abstrakt: The eruption of the Hunga Tonga-Hunga Ha'apai volcano on 15 January 2022 offered a good opportunity to explore the early impacts of tropical volcanic eruptions on stratospheric composition. Balloon-borne observations near Réunion Island revealed the unprecedented amount of water vapor injected by the volcano. The enhanced stratospheric humidity, radiative cooling, and expanded aerosol surface area in the volcanic plume created the ideal conditions for swift ozone depletion of 5% in the tropical stratosphere in just 1 week. The decrease in hydrogen chloride by 0.4 parts per million by volume (ppbv) and the increase in chlorine monoxide by 0.4 ppbv provided compelling evidence for chlorine activation within the volcanic plume. This study enhances our understanding of the effect of this unusual volcanic eruption on stratospheric chemistry and provides insights into possible chemistry changes that may occur in a changing climate.
Databáze: MEDLINE
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