PORTALE DELLA DIDATTICA

PORTALE DELLA DIDATTICA

PORTALE DELLA DIDATTICA

Elenco notifiche



The polar oceans and global climate change (Didattica di eccellenza vp)

01UIURW

A.A. 2019/20

Course Language

Inglese

Degree programme(s)

Doctorate Research in Ingegneria Civile E Ambientale - Torino

Course structure
Teaching Hours
Lezioni 36
Lecturers
Teacher Status SSD h.Les h.Ex h.Lab h.Tut Years teaching
Co-lectures
Espandi

Context
SSD CFU Activities Area context
*** N/A ***    
2019/20
PERIOD: OCTOBER - NOVEMBER The course is designed to give a complete background on the physics of sea ice and its role in the climate system, also including ice mechanics, icebergs and the physics of oil-ice interaction. Climate risks associated with sea ice changes are specially described and analysed.
The course comprises 24 lectures, divided into 12 modules, as shown in the syllabus. There are example-discussion classes included. SYLLABUS Module 1 (23/10 14.00-17.00). The physics of sea ice and ice formation Oceanographic background – Arctic and Antarctic What happens when sea water cools Growth of ice crystals Brine cells and brine rejection Salinity structure Summer melt processes First- and multi-year ice 2. (24/10 10.00-13.00) Ice growth and decay Thermodynamic model Equilibrium thickness Sensitivity of thickness to changes in forcing Sensitivity to albedo. 3. (30/10 14.00-17.00) Ice dynamics Ice motion - driving forces Free drift solution Ice interaction The dynamics of polynyas 4.(31/10 10.00-13.00) The ice thickness distribution Ridge and lead formation Geometry of pressure ridges The probability density of ice thickness and its evolution Mathematical form of ridges and leads distributions The ridging and rafting process Ridge evolution and decay Ice interaction with structures Ice interaction with the seabed 5. (6/11 14.00-17.00) The marginal ice zone Ice floes Waves in ice Modelling development of floe size distribution Eddies 6. (7/11 10.00-13.00) Icebergs and ice islands Sources Distribution in Arctic and Antarctic Physical properties Dynamics Decay and breakup Role in the oceans and in sediment transport Iceberg scouring – depths, incidence, seabed interaction Mechanics of iceberg and ice island interaction with structures Upstream detection of ice islands Towing icebergs - a source of fresh water? 7. (13/11 14.00-17.00) Oil spills under ice Scope of the under ice blowout problem Other sources of spills under and in ice Physical behaviour of crude oil in very cold water Dynamics of a rising oil-infested bubble plume Incorporation of oil in rough sea ice – containment factors Ice growth under an oil layer Oil penetration into brine drainage channels Oil transport by ice The melt process and mode of final oil release Oil behaviour in pancake ice and the marginal ice zone 8. (14/11 10.00-13.00) Two important ice regions – Greenland Sea and Beaufort Sea East Greenland waters Greenland Sea convection zone South Greenland and the Storis Baffin Bay and Nares Strait ice conditions The Lincoln Sea and waters north of Greenland The Beaufort Gyre and its variability Changes in ice conditions in central Beaufort Sea The Beaufort Sea coastal zone The summer Beaufort Sea as a new MIZ Methane release from seabed 9. (20/11 14.00-17.00) Thinning and retreat of sea ice in response to global change Satellite data on retreat Parkinson - retreat in sectors, Arctic and Antarctic What is found in Antarctic Thinning - the submarine and other evidence Model predictions of a future seasonal Arctic ice cover 10. (21/11 10.00-13.00) Arctic feedbacks and acceleration of global change Albedo change and snowline retreat Greenland ice sheet melt and global sea level rise Offshore methane release and its threat to climate Changes in thermohaline circulation Extreme weather events and the jet stream 11. (27/11 14.00-17.00) Saving planet Earth from climate change Ice ages and their causes The coming of the anthropocene Exponential growth of greenhouse gases Geoengineering as a way of delaying warming Marine cloud brightening and other techniques 12. (28/11 10.00-13.00) The need for direct air capture Paris climate agreement and its defects Need for CO2 removal Possible techniques Direct air capture methods currently in use  
Exam:
In addition to the message sent by the online system, students with disabilities or Specific Learning Disorders (SLD) are invited to directly inform the professor in charge of the course about the special arrangements for the exam that have been agreed with the Special Needs Unit. The professor has to be informed at least one week before the beginning of the examination session in order to provide students with the most suitable arrangements for each specific type of exam.
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