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“CHABLIS”. Chemistry of the Antarctic Boundary Layer and the Interface with Snow. Aims of this meeting:. To remind ourselves what CHABLIS is all about! To pick up the thread and re-focus ourselves…. CHABLIS History (ie. how we got where we are today). Idea “born” post Neumayer season (1999)

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chablis

“CHABLIS”

Chemistry of the Antarctic Boundary Layer and the Interface with Snow

aims of this meeting
Aims of this meeting:
  • To remind ourselves what CHABLIS is all about!
  • To pick up the thread and re-focus ourselves…
chablis history ie how we got where we are today
CHABLIS History(ie. how we got where we are today)
  • Idea “born” post Neumayer season (1999)
  • University groups approached (Leeds, UEA, Bristol, IC)
  • Proposal submitted December 2000; funding announced May 2001
  • CHABLIS commenced Oct 2001
  • 2001/02 E.S. Shackleton didn’t arrive at Halley
  • Field work component delayed 1 year
three research foci
Three research foci:
  • Seasonal studies of oxidant chemistry in coastal Antarctica:
      • What is the annual climatology of radical precursors in the Antarctic troposphere?
      • Is there evidence for radical chemistry during the Antarctic winter period?
      • Can we balance the budget of tropospheric O3 during spring/summer?
three research foci1
Three research foci…

2. Year round studies of the NOy budget in coastal Antarctica:

  • What controls the NOy budget throughout the year?
  • How does this affect tropospheric NOx and ice core nitrate?
three research foci2
Three research foci…

3. Air/snow exchange mechanisms of trace gases :

  • What is the connection between snow and the boundary layer concentrations of key species?
  • What is driving the firn air profiles of halocarbons and alkyl nitrates?
the timescale
The Timescale
  • Phase 1: Summer 2003/04: Initial studies and install overwintering instruments
  • Phase 2: Winter 2004: Overwinter studies (NOy budget, air/snow exchange)
  • Phase 3: Summer 2004/05: Summer intensive (focus on oxidants)
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