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?