ACE-1 R/V DISCOVERER STATUS FORM
DATE/TIME (95111619):
PREPARED BY: Tim Bates
LOCATION PRESENT: LATITUDE: 50 15.0S LONGITUDE: 154 31.5E
LOCATION -6 HOURS: LATITUDE: 48 55.9S LONGITUDE: 153 08.0E
LOCATION -12 HOURS: LATITUDE: 47 35.5S LONGITUDE: 151 46.2E
LOCATION -18 HOURS: LATITUDE: 46 17.9S LONGITUDE: 150 28.7E
PRESENT WEATHER: Westerly winds at 10 m/s, pressure 1015.2 mb, overcast, 8.7C.
SEA STATE: Westerly 3 M swell/waves
INSTRUMENTS/SYSTEMS STATUS
1 Sea Surface Measurements:
DMS: Instrumentation fully operational. Concentrations are approximately 1 nM.
NH4+NH3/pH: Seawater pH is fully operational. Seawater NH4+NH3 is not.
CO: Seawater CO is not operational
NMHC: Equilibrated Seawater/GC-FID system fully operational.
Butane ~30 ppb; Pentane ~2 ppb at 00h GMT.
CO2: Instrumentation fully operational.
Nitrate/Chlorophyll: Nitrate concentrations are approximately 13 uM.
Seawater fluoresence is being recorded continuously.
Surface seawater samples are being collected every 4
hours for discrete chlorophyll analysis.
2 Atmospheric Measurements:
DMS: Instrumentation fully operational. Concentrations are around 100ppt.
SO2: Instrumentation fully operational. Concentrations are 5-10ppt.
NH3: System not yet operational.
CO: Atmospheric CO measurements fully operational
NMHC:GC/FID system fully operational. Butane ~200ppt; Pentane ~20ppt (00h GMT).
O3: Atmospheric O3 fully operational.
Nitrogen oxides and PAN: no report.
Radon: Instrumentation fully operational.
CO2: Instrumentation fully operational.
Solar Radiation: Solar irradiance spectroradiometer (300-850 nm, 8nm slit
width) was fixed today and should be fully operational by
noon tomorrow.
Aerosol physics: Sizing instrumentation fully operational. 900
particles/cm3, subsidence event on periphery of high
pressure system yesterday. Dominant nuclei mode with
maximum at 20-30 nm. Small accumulation mode with maximum
at 90 nm.
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.
Aerosol optical properties: Instrumentation (nephelometer and PSAP) fully
operational. Absorption coefficient low.
Bscat 5-20x10-6m-1 (seasalt aerosol).
TDMA-RH: no report
TDMA-Thermal: no report
3 ISS Status and Schedule: REMARKS: 4 soundings per day.
4 Routine Weather Observations: REMARKS: Going well.
5 Satellite Observations: REMARKS: None
6 CTD Cast Schedule: REMARKS: None
SPECIAL PLANNED OBSERVATIONS (NEXT 24-HOURS):
Continue transit to Macquarie Island. Estimated time of arrival 1400 on
11/17 GMT.
PAST 24-HR OPERATIONS SUMMARY:
OTHER COMMENTS:
1. We did not receive any weather maps yesterday. Do we need to delay our
evening COMSAT connection?
2. There are no large or extra-large ACE-1 shirts remaining. We can reorder
for delivery in Hobart if there is sufficient interest. Can you give us an
estimate of this interest?