Laboratory Culture Planktonic Foraminiferal Stable Isotopic Data:  readme file
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			World Data Center-A for Paleoclimatology
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NOTE: PLEASE CITE CONTRIBUTORS WHEN USING THIS DATA!!!!!

NAME OF DATA SET:  Laboratory Culture Planktonic Foraminiferal Stable Isotopic Data

CONTRIBUTORS:  B.E. Bemis and H.J. Spero, Geology, University of California, 
Davis; J. Bijma, Geosciences, University of Bremen, Germany; 
and D.W. Lea, Geological Sciences and Marine Science Institute, 
University of California, Santa Barbara

LAST UPDATE:  2/98 (original receipt by WDC-A Paleo)

IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 98-003

SUGGESTED DATA CITATION:
Bemis et al., Laboratory Culture Planktonic Foraminiferal Stable Isotopic Data, 
IGBP PAGES/World Data Center-A for Paleoclimatology  
Data Contribution Series #98-003, 
NOAA/NGDC Paleoclimatology Program, Boulder, CO, USA.

GEOGRAPHIC REGION OF COLLECTION AREA:
Eastern Pacific Ocean , San Pedro Basin, Southern California Bight
33 deg 23 min N, 118 deg 26 min W

ORIGINAL REFERENCE:  Bemis, B.E., Spero, H.J., Bijma, J.B., and Lea, D.W., 
Reevaluation of the isotopic composition of planktonic foraminifera:  
Experimental results and revised paleotemperature equations, 
Paleoceanography, v13, No. 2, pp 150-160, April 1998.

FUNDING SOURCE:  NSF grants OCE9416595 (to HJS) and OCE9415991 (to DWL); 
Sigma Xi  and GSA (to BEB); and the Program for the Advancement of Special 
Research Projects of the Alfred Wegener Institute, Germany (to JB)

PERIOD OF RECORD: 
LIST OF FILES:  Bemis1998.readme (this file), lab_forams.xls 
(Microsoft Excel 4.0 spreadsheet file), lab_forams.txt (tab delimited text file).

DESCRIPTION:  Foraminifera were hand collected from 2-6 m depth and cultured under 
controlled conditions during the summers of 1994-1996.  Detailed methodology and 
temperature:d18O relationships are discussed in Bemis et al., 1998, (in press).

VARIABLE NAMES:
O. universa:  Orbulina universa (symbiotic)
G. bulloides:  Globigerina bulloides (nonsymbiotic)
Chamber#:  Chamber number in shell whorl counted in order calcified 
(G. bulloides only; N/A = not applicable)
[CO32-]:  Carbonate ion concentration of culture water 
(171:  ambient San Pedro Basin concentration; 458:  elevated concentration)
Irradiance:  Culture irradiance (HL:  high light, corresponds to maximum symbiont 
photosynthesis, >380; LL:  low light, below the symbiont compensation light level, 20-30) 
(O. universa only; N/A = not applicable)
T(°C):  Culture temperature
dc-dw (VPDB):  d18O of shell calcite minus d18O of culture water

VARIABLE UNITS:
[CO32-]:  micromoles/kg
Irradiance:  microEinsteins/m^2/s
Temperature:  degrees Celsius
dc-dw:  per mil (VPDB); dw converted from the VSMOW to VPDB scale by subtracting 0.27

DATA PRECISION:
[CO32-]:  +/- 8 micromoles/kg experimental
T(°C):  +/- 0.2 degrees experimental
dc:  +/- 0.05 per mil measurement
dw:  +/- 0.03 per mil measurement; +/- 0.09 per mil experimental