prprodpi 91nov 07nov91-21nov91 Primary Production based upon Photosynthesis-Irradiance relationships. Includes raw numbers in order to calculate the relationship. Look at fitted_parameters files for derived variables. Date, Station, Depth (meters), DPM's, PAR Irradiance LTER_Grid,Station_Num,Event_Num,Date,Julian_Day,Latitude(S),Longi tude(W),Depth,Bottle,Down_Cast,Up_Cast,Pstron,Chl_a,Time_in,Time_o ut,Inc_time,In_situ_temp,Inc_temp:,Inc_vol,C14_vol_injected,Rt_Vial _Num,Rt_vol,Rt ,Tzero_vial_num,Tzero,Inc_Vial_Num,numpoints,Model_num,Pmax,Al pha,Beta,Ik,It,YIntcpt,Pmax_Err,Alpha_Err,Beta_Err,Ik_Err,It_Err,YInt cpt_Err,Comments,Comments Usually 1 depth profile per station. To determine photosynthesis-irradiance (P-I) relationships, twenty- five 1 ml whole water samples for each discrete field sample were inoculated with H14CO3 (final concentration 3-6 mCi/ml) and placed in newly designed photosynthetrons. The photosynthetrons consisted of a milled aluminum block holding fifty 7 ml scintillation vials. Each block had hollowed out channels which circulate an ethylene glycol:water (1:1) solution for temperature control (+/- 0.05oC). The light source was two 75 watt FOS-8 Cool-Lux Inc. lamps (one lamp for each set of 25 samples). In order to eliminate the spectral bias of carbon uptake in white light, light was passed through a CuSo4 filter to eliminate far-red wavelengths of light. Neutral density Plexiglas filters were used to produce a variety of light intensities ranging from 0 to 1300 uEm-2s-1. After a 1.5 hour incubation at in situ temperatures , samples were fixed with 20 uL formalin solution, acidified with glacial acetic acid:methanol (1:30), and heat dried. National Diagnostics liquiscint scintillation fluor was added and samples were counted on a LKB 1217 scintillation counter. Shipboard stations taken at pre-defined ship locations. southern ocean, lter, marginal ice zone, primary productivity, phytoplankton, carbon uptake, photosynthesis, palmer peninsula Tab-delimited ASCII. on-line LTER ~lter/lterdata/91nov/prprodpi/* Barbara B. Prezelin Mark Moline Barbara B. Prezelin Allen Matlick Nicolas Boucher, Barbara B. PreŽzelin, Mark Moline Nicolas Boucher, Barbara B. PreŽzelin, Mark Moline Kai Scheppe, Allen Matlick Allen Matlick, Kai Scheppe, Mark Moline Mark Moline, Allen Matlick 6/19/92 20aug94 - Moline 11/21/95 - Matlick Allen Matlick, Kai Scheppe, Nicolas Boucher, Mark Moline Data entry errors corrected and massive file structure changes made 11/95. File structure now matches the file structure for similar files describing later lter cruises and station seasons. - HAM 11/21/95