chl 9192pal 26nov91-27feb92 Chlorophyll and phaeopigment from extracted fluorescence analysis of discrete bottle samples collected by zodiac. event grid(field) year month day julian_day hour(gmt) minute(gmt) depth(m) chlorophyll(mg/m3) phaeopigment(mg/m3) code latitude(degS) latitude(minS) longitude(degW) longitude(minW) chlorophyll-from fluorescence Smith et al (1981) phaeopigment-from fluorescence Smith et al (1981) Each station 1-2 time per week although the schedule is severely impacted by weather. One bottle from each Go-Flo with data collected at depths. Water is filtered using HA milipore filters. The filters are stored in acetone and frozen for a minimum of 24hrs. A Turner fluorometer is used to determine the concentration of extracted chlorophyll. The analog Turner fluorometer #5709 was used with the Mar92 calibration. Water was taken from Go-Flo bottles lowered by hand from the zodiac. Chlorophyll analysis done at Palmer station. Fluorometer calibration good. southern ocean, antarctic, biomass, chlorophyll, phaeopigment ascii maccrj online lter ~lter/lterdata/9192pal/chl/* Raymond C. Smith Karen S. Baker, karen@icess.ucsb.edu Phil Handley, Tim Newberger Phil Handley, Charleen R. Johnson Karen S. Baker Karen S. Baker 16 April 92 5 June 92 Smith, R.C., K.S.Baker, P.Dustan: Fluorometric Techniques for the Measurement of Oceanic Chlorophyll in the Support of Remote Sensing, SIO Ref. 81-17, 1981. Smith, R.C., K.S.Baker and M.Vernet: Seasonal and Interannual Variability of Phytoplankton Biomass West of the Antarctic Peninsula. Journal of Marine Systems (in press). From Carbon Fluxes and Dynamic Processes in the Southern Ocean: Present and Past, International Symposium, Brest, France, August 1995. Smith, R.C., H.Dierssen, M.Vernet: Phytoplankton Biomass and Productivity, in Foundations for Ecological Research West of the Antarctic Peninsula, Ross et al (ed), AGU Antarctic Research Series 70, pp333-256, 1996. UCMBOI fluorometer was originally used but found to give a slow response so simultaneous use of 5709 was begun immediately. UCMBOII response was so slow as to be unuseable. Calibrations were done with chlorophyll-a from the SIGMA company of the type spinach (S) and of type Anacystis (A) prior to the cruise, on station, and post cruise. UCMBOI had calibrations (AJun91, SFeb92, AMar92); UCMBOII had calibrations (AJul91); 5709 had calibrations (SMay91, SDec91, SFeb92, AMar92). The difference between use of spinach and anacystis was small (2.5%). The change with time in calibration dominated (6-12%) possible errors due to the variations in personnel, techniques and age of samples. During the stay at Palmer, comparisons were made between use of UCMBOI and #5709. The mar92 calibration was done for both fluorometers simutaneously, Comparing duplicate samples run on both fluorometers using the mar92 calibration shows on average a random difference of 10%. Using other calibrations for #5709 (May91) and UCMBOI (Jun91) gave a larger random difference (16%). Using the normal small tubes versus the larger tubes was explored during the calibration of the UCMBOI fluorometer in Feb92 and Mar92. Use of the large tubes results in an FD factor which is 3-4% higher. Original file on mac in field. Correction April92 by Charleen Johnson. Final calibration determination (use Mar92) by Karen Baker in May92. Core measurments available after two years. Citation acknowledgement: "Data from the Palmer LTER data archive were supported by Office of Polar Programs, NSF (OPP-9011927)."