Hydrography, Sea Ice, and Meteorology Working GroupReport

# 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