ACE-1 R/V DISCOVERER STATUS FORM

DATE/TIME: (95112319)

PREPARED BY: Tim Bates

• LOCATION PRESENT: LATITUDE:47 47.7S LONGITUDE: 140 15.4E
• LOCATION -6 HOURS: LATITUDE: 48 29.9S LONGITUDE: 139 32.5E
• LOCATION -12 HOURS: LATITUDE: 49 27.9S LONGITUDE: 138 37.9E
• LOCATION -18 HOURS: LATITUDE: 49 59.7S LONGITUDE: 138 16.2E

PRESENT WEATHER:

Winds 190 degrees 16 m/s, pressure 1006.0 mb and rising, overcast with some breaks of clear sky, dry bulb 8.0C, wet bulb 5.0C seawater 9.9C.

SEA STATE:

Southwesterly 2-3 M swell/waves

INSTRUMENTS/SYSTEMS STATUS

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• Sea Surface Measurements:

  1. DMS: Concentrations are approximately 1 nM.
  2. DMSP/DMSO: Samples collected every 8 hours for particulate and dissolved DMSP and DMSO. Incubation experiment in progress
  3. NH4+NH3/pH: NH4+NH3 concentration 0.5 umolar. pH 8.09.
  4. CO:
  5. NMHC:
  6. CO2:
  7. Nitrate/Chlorophyll: Nitrate concentrations are approximately 2 uM. Seawater fluorescence is being recorded continuously. Surface seawater samples are being collected every 4 hours for discrete chlorophyll analysis.

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• Atmospheric Measurements:

  1. DMS:
  2. SO2:
  3. NH3: Using oxalic acid coated filters.
  4. CO:
  5. NMHC:
  6. O3:
  7. Nitrogen oxides and PAN:
  8. Radon:
  9. CO2:
  10. Solar Radiation:
  11. Aerosol physics:
  12. Aerosol chemistry: 2-stage and 7-stage impactors currently sampling for time periods ranging from 24 to 72 hours for IC, total organic carbon, speciated organics, and gravimetric analysis.
  13. Aerosol optical properties:
  14. TDMA-RH:
  15. TDMA-Thermal:

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• ISS Status and Schedule:

  Sondes were launched every 3 hours yesterday to support Lagrangian operations. The 4/day schedule has now resumed.

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• Routine Weather Observations: Going well.
• Satellite Observations: None
• CTD Cast Schedule: None

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• SPECIAL PLANNED OBSERVATIONS (NEXT 24-HOURS):

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• PAST 24-HR OPERATIONS SUMMARY: Four smart balloons and one ozonesonde were launched yesterday. At the end of the launches, the ship followed the balloons, stopping every 3 hours to turn into the wind and sample the physical and optical properties of the aerosol.
• OTHER COMMENTS: