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SUMMARY:Antarctica\, Ozone and Change: some links between environmental co
 ncerns - Mr Jonathan Shanklin\, British Antarctic Survey 
DTSTART:20131028T180000Z
DTEND:20131028T190000Z
UID:TALK46591@talks.cam.ac.uk
CONTACT:Beverley Larner
DESCRIPTION:This lecture introduces life in the Antarctic\, and follows th
 is by focussing on two global environmental issues\, which are of particul
 ar significance in Antarctica.  Other symptoms of global and local change 
 are then introduced and an underlying cause discussed.\n\nThe British Anta
 rctic Survey is responsible for implementing British policy in the Antarct
 ic.  Run from its Cambridge headquarters\, it has two year-round Antarctic
  stations\, two summer-only stations\, numerous field camps and runs two s
 hips and five aircraft.  The scientific studies cover all aspects of resea
 rch in the Antarctic\, ranging from earth sciences (mapping\, geology\, ge
 ophysics)\, physical sciences (meteorology\, glaciology\, chemistry and up
 per atmospheric physics) and life sciences (marine\, terrestrial and human
 ).  Scientists may visit the Antarctic for a short summer stay\, or spend 
 up to eighteen months collecting data.  In addition to the scientists\, su
 pport staff are required to maintain the smooth day to day running of the 
 stations.\n\nTwo global environmental issues are particularly associated w
 ith the Antarctic: global climate change and the ozone hole.  The popular 
 perception is that the polar ice caps are melting and that low-lying areas
  around the globe will be flooded.  The truth is less clear cut\, but this
  may eventually happen.  Antarctic ice-cores tell us what our past climate
  has been like\, and give us clues to what may happen in the future.  Ther
 e are natural cycles of climatic change in the Antarctic\, but we are affe
 cting the continent and will increasingly do so in the future.  \n\nThe An
 tarctic ozone hole was discovered by British Antarctic Survey scientists a
 nd is a graphic demonstration of how easy it is to change our planet’s a
 tmosphere.  I will explain why the ozone hole forms over Antarctica and th
 e precautions that we need to take.  There is often confusion between the 
 ozone hole and global warming\, although there are also complex links betw
 een them.  Through the Montreal Protocol we have taken steps to address oz
 one depletion and these are working.\n\nThere are many other environmental
  issues affecting our planet\, but all too often each is taken in isolatio
 n.  This inevitably means that other symptoms will surface\, perhaps more 
 damaging than those currently being treated.  Unless we debate and then ta
 ke steps to resolve the underlying cause of all the symptoms\, we may find
  that our planet is unable to support us.\n
LOCATION:Bristol-Myers-Squibb Lecture theatre\, Department of Chemistry
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