noaa-ocean-21990 Southern Ocean MOCNESS Plankton Tow and Water Chemistry Data Mortyn, P.G.; Charles, C.D. Southern Ocean MOCNESS Plankton Tow and Water Chemistry Data 2017-04-24 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/21990 Investigator P.G. Mortyn Investigator C.D. Charles earth science paleoclimate paleoceanography delta 18O,Neogloboquadrina pachyderma,null,per mil PDB,null,paleoceanography,null,null,N,150-250-um fraction earth science paleoclimate instrumental sigma-t,sea water,null,kilogram per cubic meter,null,instrumental,null,null,N,MOCNESS earth science paleoclimate paleoceanography Orbulina universa,null,null,count per cubic meter,null,paleoceanography,null,null,N,MOCNESS; count per cubic meter of seawater earth science paleoclimate paleoceanography delta 18O,Globorotalia truncatulinoides,null,per mil PDB,null,paleoceanography,null,null,N,150-250-um fraction earth science paleoclimate paleoceanography delta 18O,Orbulina universa,null,per mil PDB,null,paleoceanography,null,null,N,150-250-um fraction earth science paleoclimate paleoceanography delta 13C,Globorotalia inflata,null,per mil PDB,null,paleoceanography,null,null,N,150-250-um fraction earth science paleoclimate paleoceanography Neogloboquadrina pachyderma dextral,null,null,count per cubic meter,null,paleoceanography,null,null,N,MOCNESS; count per cubic meter of seawater earth science paleoclimate paleoceanography Neogloboquadrina pachyderma sinistral,null,null,count per cubic meter,null,paleoceanography,null,null,N,MOCNESS; count per cubic meter of seawater earth science paleoclimate instrumental collection water depth,null,null,meter,null,instrumental,null,null,N,null earth science paleoclimate paleoceanography Globorotalia truncatulinoides,null,null,count per cubic meter,null,paleoceanography,null,null,N,MOCNESS; count per cubic meter of seawater earth science paleoclimate paleoceanography delta 13C,Neogloboquadrina pachyderma,null,per mil PDB,null,paleoceanography,null,null,N,150-250-um fraction earth science paleoclimate paleoceanography delta 18O,Globorotalia inflata,null,per mil PDB,null,paleoceanography,null,null,N,150-250-um fraction earth science paleoclimate instrumental fluorescence,sea water,null,milligram per cubic meter,null,instrumental,null,null,N,MOCNESS earth science paleoclimate paleoceanography delta 13C,Globigerina bulloides,null,per mil PDB,null,paleoceanography,null,null,N,150-250-um fraction earth science paleoclimate paleoceanography Globorotalia inflata,null,null,count per cubic meter,null,paleoceanography,null,null,N,MOCNESS; count per cubic meter of seawater earth science paleoclimate paleoceanography delta 13C,Globorotalia truncatulinoides,null,per mil PDB,null,paleoceanography,null,null,N,150-250-um fraction earth science paleoclimate paleoceanography collection water depth,null,null,meter,null,paleoceanography,null,null,N,null earth science paleoclimate instrumental sea water temperature,null,null,degree Celsius,null,instrumental,null,null,N,MOCNESS earth science paleoclimate paleoceanography delta 18O,Globigerina bulloides,null,per mil PDB,null,paleoceanography,null,null,N,150-250-um fraction earth science paleoclimate paleoceanography Globigerina bulloides,null,null,count per cubic meter,null,paleoceanography,null,null,N,MOCNESS; count per cubic meter of seawater earth science paleoclimate paleoceanography identified foraminifer,null,null,count per cubic meter,null,paleoceanography,null,null,N,MOCNESS; Turborotalita quinqueloba; count per cubic meter of seawater earth science paleoclimate paleoceanography delta 13C,Orbulina universa,null,per mil PDB,null,paleoceanography,null,null,N,150-250-um fraction earth science paleoclimate instrumental salinity,sea water,null,parts per thousand,null,instrumental,null,null,N,MOCNESS earth science paleoclimate paleocean oxygen isotopes earth science paleoclimate paleocean carbon isotopes earth science paleoclimate paleocean physical properties earth science paleoclimate paleocean population abundance geoscientificInformation 1996 AD 1997 AD -46 cal yr BP -47 cal yr BP Complete -53 -41 5 12 Ocean Southern Ocean TNO57-16>LATITUDE -50>LONGITUDE 6 Ocean Southern Ocean TNO57-11>LATITUDE -47>LONGITUDE 6 Ocean Southern Ocean TNO57-9>LATITUDE -47>LONGITUDE 7 Ocean Southern Ocean TNO57-22>LATITUDE -43>LONGITUDE 12 Ocean Southern Ocean TNO57-13>LATITUDE -53>LONGITUDE 5 Ocean Southern Ocean TNO57-21>LATITUDE -41>LONGITUDE 8 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII P. Graham Mortyn and Christopher D. Charles 2003 Paleoceanography 18 2 10.1029/2001PA000637 http://onlinelibrary.wiley.com/doi/10.1029/2001PA000637/full

Plankton tows conducted in the Atlantic sector of the Southern Ocean allow analysis of the influence of water column structure on planktonic foraminiferal abundance and d18O composition. Foraminiferal abundance varies by several orders of magnitude across a large gradient in sea surface temperature and other hydrographic features, demonstrating high sensitivity of foraminiferal populations to regional differences in water properties. The depth of maximum abundance for key species such as Globigerina bulloides and Neogloboquadrina pachyderma is not constant from station to station. The pattern suggests that their abundance and shell chemistry are tied to density horizons or other conditions (such as food availability) that become more sharply defined with depth in the northern subantarctic. The consistent observation of Globorotalia inflata and Globoratalia truncatulinoides as relatively deep-dwelling species confirms their utility as indicators of upper thermocline properties. In d18O all species are observed to be isotopically lighter than predicted from water properties, but the species-specific offset is fairly uniform at all stations. These observations define the utility of multispecies d18O for reconstructing temperature and density stratification from past surface oceans. STUDY NOTES: Plankton tow foraminiferal census and stable isotope (d18O and d13C) and water chemistry data collected near 6 drill sites in the Atlantic sector of the Southern Ocean. d18O analyses were carried out on the 150-250-um fraction of Globigerina bulloides, Neogloboquadrina pachyderma, Globorotalia truncatulinoides, Globorotalia inflata, and Orbulina universa.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/mortyn2003/mortyn2003tno57-9foram.txt Formatted Text Data File; TNO57-9 Plankton Tow Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/mortyn2003/mortyn2003tno57-13foram.txt Formatted Text Data File; TNO57-13 Plankton Tow Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/mortyn2003/mortyn2003tno57-21water.txt Formatted Text Data File; TNO57-21 Water Chemistry Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/mortyn2003/mortyn2003tno57-11foram.txt Formatted Text Data File; TNO57-11 Plankton Tow Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/mortyn2003/mortyn2003tno57-16foram.txt Formatted Text Data File; TNO57-16 Plankton Tow Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/mortyn2003/mortyn2003tno57-22foram.txt Formatted Text Data File; TNO57-22 Plankton Tow Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/mortyn2003/mortyn2003tno57-13water.txt Formatted Text Data File; TNO57-13 Water Chemistry Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/mortyn2003/mortyn2003tno57-16water.txt Formatted Text Data File; TNO57-16 Water Chemistry Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/mortyn2003/mortyn2003tno57-22water.txt Formatted Text Data File; TNO57-22 Water Chemistry Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/mortyn2003/mortyn2003tno57-9water.txt Formatted Text Data File; TNO57-9 Water Chemistry Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/mortyn2003/mortyn2003tno57-11water.txt Formatted Text Data File; TNO57-11 Water Chemistry Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/mortyn2003/mortyn2003tno57-21foram.txt Formatted Text Data File; TNO57-21 Plankton Tow Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11