3rd International Workshop on Stratospheric Sulfur and its Role in Climate (SSiRC)

University of Leeds

30 March - 1 April 2020

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Aerosol and, therefore, sulfur play a key role in the climate system. In recognition of their importance, the WCRP's (World Climate Research Programme) SPARC (Stratospheric Processes and their Role in Climate) SSiRC activity is sponsoring this 3rd scientific workshop to facilitate an improved understanding on the way that the stratospheric aerosol layer will be affected by on-going climate change and how the stratospheric aerosol layer itself drives climate change.

The workshop will be held at the University of Leeds in the Liberty Building (School of Law) from 30th March to 1st April 2020. The meeting’s focus will be on observations and modelling of the stratospheric aerosol layer and its sources and, particularly, to understand volcanic impacts on stratospheric composition and climate. Other related research topics are welcome, including:

• Recent volcanic activity (e.g., Raikoke) and the scientific response to them.
• Recent field campaigns (e.g. StratoClim, AToM and ASPEN).
• Community modelling activities (e.g. ISA-MIP, VolMIP and GeoMIP).
• Related science programs (e.g. OCTAV-UTLS, CCMI, PAGES and VICS).
• Measurements and modelling of aerosol precursors such as SO2, OCS, and others.
Please note, the abstract submission and standard registration deadline is 16 February 2020. 
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Invited Speakers
Gabi Hegerl (Univ. Edinburgh, UK): “Volcanic influences on historical climate change, and the Early 20th Century Warming”
Jean-Paul Vernier (NASA Langley, USA): “Overview of measurements of the Raikoke volcanic aerosol cloud, and the VolRes initiative”
Michael Hoepfner (Kalsruhe Institute for Tech., Germany): “The composition of the Asian Tropopause Aerosol layer: influence from ammonium nitrate“
John Plane (Univ. Leeds, U.K.): “Cosmic dust: sources of meteoric material and their transport to the stratospheric aerosol layer”
Peter Hoor (Johannes Gutenberg Univ. Mainz, Germany): ”Influence of stratospheric circulation changes and strat-trop exchange processes on the stratospheric aerosol layer”

Conference Themes
Monday 30th March - Volcanic impacts on climate and stratospheric chemistry (including ISA-MIP, VolMIP and GeoMIP).
Tuesday 31st March - Observations of the stratospheric aerosol layer and recent volcanic activity (e.g. Raikoke)
Wednesday 1st April - The Asian Tropopause Aerosol Layer, precursor gases and non-sulphate influences (organics, meteoric)
We gratefully acknowledge financial support from NASA to enable PhD students and Early Career Researchers (ECRs) to attend the workshop and SPARC for providing travel support for Scientists from Developing Countries and ECRs. We also appreciate the support of the UK National Centre for Atmospheric Science for the use of their Fairburn House building for one of the workshop sessions.
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