BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:The hydrodynamics of large lakes and the implications for carbon s
 equestration - Professor Jörg Imberger\, Centre for Water Research\, UWA\
 , Perth
DTSTART:20131025T150000Z
DTEND:20131025T160000Z
UID:TALK48050@talks.cam.ac.uk
CONTACT:Dr C. P.  Caulfield
DESCRIPTION:Large lakes play an important role in global carbon cycling. H
 owever\, deep lakes are susceptible to anoxia with the associated loss of 
 biodiversity if overloaded with nutrients\; the balance between the forces
  that stabilise a lake and those that mix the water column is very delicat
 e and there are signs that global change is upsetting this delicate balanc
 e with potentially devastating effects for the endemic fauna and flora. I 
 will illustrate the subtleties of the balance using two extreme examples\,
  Lake Ohrid\, a deep\, very old European lake that is under threat from gl
 obal warming because of its great depth and Lake Argyle\, a very large res
 ervoir\, that has the potential of being used for aquaculture to provide a
 bout 35% of Western Australia's fish needs and sequester about 20% of WA's
  carbon emissions\, providing an opportunity to mitigate global warming. T
 he large expanses of shallow littoral waters of Lake Argyle have been show
 n to support very active differential heating\, cooling and wind mixing\, 
 provided a very active horizontal exchange between the littoral and deep c
 entral waters\, making it ideal for aquaculture.\n\nI will review the unde
 rlying fluid dynamics of these two extreme lakes and show how a fundamenta
 l understanding of underlying fluid dynamics of lakes has allowed us to se
 t up a real-time coupled hydrodynamic-ecological model\, forced by a full 
 high resolution meteorological model\, that now serve as real-time decisio
 n support systems for lake managers.\n\nIn conclusion\, I shall\, very bri
 efly\, summarise some important unresolved hydrodynamic and ecological pro
 blems and put the proposal to use Lake Argyle as a carbon sequestration si
 te and food source into the Western Australian context of making the State
  carbon neutral\, energy and water self sufficient and with an enhanced so
 cial well-being. The same understanding may be used to install impellers i
 n Lake Ohrid to save this lake from suffocating from lack of oxygen brough
 t about by global warming. Together\, these two examples serve to illustra
 te how large lakes may be harnessed as a resource for meeting the challeng
 es of global change. 
LOCATION:MR2\, Centre for Mathematical Sciences\, Wilberforce Road\, Cambr
 idge
END:VEVENT
END:VCALENDAR