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SUMMARY:Global modeling of mercury in the atmosphere\, ocean\, and land
DTSTART:20100510T161500
DTSTAMP:20260924T200206Z
UID:3caa20096038ad89f83b60ea41d7ecd24411126128cf27d84496b2d7
CATEGORIES:Conferences - Seminars
DESCRIPTION:Jaeglé\, Lyatt (visiting professor University of Washington\,
  USA)\nHuman activities such as coal combustion and metal extraction have 
 profoundly impacted the biogeochemical cycling of mercury (Hg). Once relea
 sed in the atmosphere\, Hg is transported globally before being deposited 
 to the Earth's surface\, where it can bioaccumulate in aquatic food chains
 . Exposure to Hg through fish consumption can severely affect human health
 . After deposition to land and aquatic surfaces\, Hg can be re-emitted to 
 the atmosphere. Thus\, anthropogenic Hg cycles on multiple timescales in t
 he environment\, ranging from years to centuries. In this talk\, I will pr
 esent a new global chemical transport model for understanding this cycling
 : the GEOS-Chem atmosphere-ocean-land Hg simulation. I will describe how w
 e have applied this model to constrain a number of questions in the global
  budget of Hg: the role of ocean emissions\, the long-range transport of A
 sian anthropogenic Hg emissions\, and the impact of historical gold and si
 lver mining.
LOCATION:GR B3 30
STATUS:CONFIRMED
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