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SUMMARY:Marine emissions of methanethiol increase aerosol cooling in the S
 outhern Ocean - Dr Charel Wohl University of East Anglia
DTSTART:20241029T110000Z
DTEND:20241029T120000Z
UID:TALK222907@talks.cam.ac.uk
CONTACT:Dr Megan Brown
DESCRIPTION:\nOcean-emitted dimethylsulfide (DMS) is a major source of cli
 mate-cooling aerosols. However\, most of the marine biogenic sulfur cyclin
 g is not routed to DMS but to methanethiol (MeSH)\, another volatile whose
  reactivity has hitherto hampered measurements. Therefore\, the global emi
 ssions and climate impact of MeSH remain unexplored. We compiled a databas
 e of seawater MeSH concentrations\, identified their statistical predictor
 s\, and produced monthly fields of global marine MeSH emissions adding to 
 DMS emissions. Implemented into a global chemistry-climate model\, MeSH em
 issions increase the sulfate aerosol burden by 30-70% over the Southern Oc
 ean and enhance the aerosol cooling effect while depleting atmospheric oxi
 dants and increasing DMS lifetime and transport. Accounting for MeSH emiss
 ions reduces the radiative bias of current climate models in this climatic
 ally relevant region. \n---------\nCAS UnionRoad is inviting you to a sche
 duled Zoom meeting.\n\nTopic: CAS Seminar: Charel Wohl\nTime: Oct 28\, 202
 4 11:00 AM London\n\nJoin Zoom Meeting\nhttps://us02web.zoom.us/j/82163202
 273?pwd=DVxqL7VwK9RRcJbDhwNd06TQDxdplb.1\n\nMeeting ID: 821 6320 2273\nPas
 scode: 342192
LOCATION:Chemistry Dept\, Unilever Lecture Theatre and Zoom
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