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Impact of major volcanic eruptions on stratospheric water vapour

Löffler, Michael and Brinkop, Sabine and Jöckel, Patrick (2016) Impact of major volcanic eruptions on stratospheric water vapour. Atmospheric Chemistry and Physics (ACP), 16 (10), pp. 6547-6562. Copernicus Publications. DOI: 10.5194/acp-16-6547-2016 ISSN 1680-7316

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Official URL: http://www.atmos-chem-phys.net/16/6547/2016/

Abstract

Volcanic eruptions can have a significant impact on the Earth's weather and climate system. Besides the subsequent tropospheric changes, the stratosphere is also influenced by large eruptions. Here changes in stratospheric water vapour after the two major volcanic eruptions of El Chichón in Mexico in 1982 and Mount Pinatubo on the Philippines in 1991 are investigated with chemistry–climate model simulations. This study is based on two simulations with specified dynamics of the European Centre for Medium-Range Weather Forecasts Hamburg – Modular Earth Submodel System (ECHAM/MESSy) Atmospheric Chemistry (EMAC) model, performed within the Earth System Chemistry integrated Modelling (ESCiMo) project, of which only one includes the long-wave volcanic forcing through prescribed aerosol optical properties. The results show a significant increase in stratospheric water vapour induced by the eruptions, resulting from increased heating rates and the subsequent changes in stratospheric and tropopause temperatures in the tropics. The tropical vertical advection and the South Asian summer monsoon are identified as sources for the additional water vapour in the stratosphere. Additionally, volcanic influences on tropospheric water vapour and El Niño–Southern Oscillation (ENSO) are evident, if the long-wave forcing is strong enough. Our results are corroborated by additional sensitivity simulations of the Mount Pinatubo period with reduced nudging and reduced volcanic aerosol extinction.

Item URL in elib:https://elib.dlr.de/104453/
Document Type:Article
Additional Information:Die Zuordnung zum "R - Projekt KliSAW" war leider nicht möglich, da es in der Auswahlliste nicht erscheint.
Title:Impact of major volcanic eruptions on stratospheric water vapour
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Löffler, MichaelDLR, IPAUNSPECIFIED
Brinkop, SabineDLR, IPAUNSPECIFIED
Jöckel, PatrickDLR, IPAhttps://orcid.org/0000-0002-8964-1394
Date:13 May 2016
Journal or Publication Title:Atmospheric Chemistry and Physics (ACP)
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:16
DOI :10.5194/acp-16-6547-2016
Page Range:pp. 6547-6562
Publisher:Copernicus Publications
ISSN:1680-7316
Status:Published
Keywords:EMAC, MESSy, Earth System Modelling, volcano, stratosphere, water vapour, Mt. Pinatubo, El Chichin, Atmospheric Chemistry
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Atmosphären- und Klimaforschung
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Earth System Modelling
Deposited By: Jöckel, Dr. Patrick
Deposited On:08 Jun 2016 15:28
Last Modified:02 May 2019 13:59

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