HYDROGRAPHY, SEA ICE, AND METEOROLOGY WORKING GROUP REPORT

First U.S. Southern Ocean GLOBEC Science Investigator Meeting
Arlington, VA
25-26 May 2000

Bob Beardsley and Doug Martinson, Working Group Co-Chairs

Issues

  • dual over-side operations (Weibe factor; Captain specific?)
  • bottle depths (bio, nuts, tracers)
  • bottle size
  • Peter Guest assessment of met sensors
  • Status of Beardsley's request for met obs
  • Need radiation (short and long wave) measurements
  • AWS sites around Marguerite Bay (status with Bernie)
  • Need ''owner''of met data (suggest Beardsley)
  • High-latitude training for cold operations
  • Distribute sea-ice CD and manual for consistent obs
  • bio/nuts/tracer/phys needs for ice/snow cores
  • Special sampling requirements/training for tracers?
  • Raytheon acquisition requests:
  • additional core barrels (full kit required: Chris/Don coordinate needs); CTD sensors; other (AWS; radiation sensors for ship)?

    • Hydrography

    All cruises (mooring, and both 2-ship cruises)
    Mooring will do CTD after each mooring

    CTD requirements:
    personnel: 3 scientists + RPSC tech
    depth: surface to bottom (few meters)
    bottles: 24 bottle (biologists; nutrients; tracers for depths)
    variables: T, S, O, nuts, bio, tracers

    ADCP:
    Need personnel for overseeing ADCP (will contribute to CTD)
    Should have ADCP pre-cruise checkup
    (communicate with Terry and/or Eric regarding configuration and operation)

    Multibeam operations:
    continuous

    Meteorology:

    Continuous need to monitor ship sensors
    Lead area (ship observer and Comiso oversights)
    Coastal AWS

    Sea Ice:

    From ship:
    bouncing ball or thickness stick
    spatial distribution (1 observer)
    Worby observing system (distribute sea ice CD)
    Surface characterization (e.g., frost flowers)

    On ice:
    snow studies (Don to check with Joey for surface T)
    thickness profiles (100 m line with 1/2 m profiles) for ice types and habitats
    Temperature profiles
    Moisture/density profiles
    Albedo
    Ice motion: satellite; buoys
    Ice/snow interface
    Ablation stakes
    Snow stakes (perhaps installed on first cruise)
    Seawater flooding