noaa-ocean-8731 Caissie et al. 2010 Bering Sea Deglacial-Holocene Diatom Productivity Data Caissie, B.E.; Brigham-Grette, J.; Lawrence, K.T.; Herbert, T.D.; Cook, M.S. Caissie et al. 2010 Bering Sea Deglacial-Holocene Diatom Productivity Data 2010-01-15 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/8731 Investigator B.E. Caissie Investigator J. Brigham-Grette Investigator K.T. Lawrence Investigator T.D. Herbert Investigator M.S. Cook earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Coscinodiscus marginatus earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Chaetoceros sp. resting spores earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiosira gravida earth science paleoclimate paleoceanography delta 18O,Neogloboquadrina pachyderma sinistral,null,per mil PDB,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Asteromphalus sp. earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Stephanopyxis sp. earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiosira trifulta earth science paleoclimate paleoceanography delta 18O,Uvigerina peregrina,null,per mil PDB,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Coscinodiscus radiatus earth science paleoclimate paleoceanography total centric diatoms,null,null,percent,null,paleoceanography,null,null,N,benthic varieties earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Odontella aurita earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Rhizosolenia hebetata earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiosira hyalina earth science paleoclimate paleoceanography delta 13C,Neogloboquadrina pachyderma sinistral,null,per mil PDB,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Azpeitia tabularis earth science paleoclimate paleoceanography age,null,null,calendar year before present,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Bacterosira bathyomphala earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Fragilariopsis sp. earth science paleoclimate paleoceanography total pennate diatoms,null,null,percent,null,paleoceanography,null,null,N,benthic assemblages earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Stellarima sp. earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiosira pacifica earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiosira sp. earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiosira eccentrica earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiothrix longissima earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiosira nordenskioldii; Uncertain taxon name earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Neodenticulopsis seminae earth science paleoclimate paleoceanography depth,null,null,centimeter,null,paleoceanography,null,null,N,duplicate of NMR study? earth science paleoclimate paleoceanography delta 13C,Uvigerina peregrina,null,per mil PDB,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Actinocyclus curvatulus earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Actinocyclus sp. earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Rhizosolenia styliformis earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Coscinodiscus oculus-iridis earth science paleoclimate paleoceanography total diatoms,null,null,percent,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Porosira glacialis earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassionema nitzschioides earth science paleoclimate paleoceanography identified diatom,null,null,percent,null,paleoceanography,null,null,N,Shionodiscus oestrupii; Unaccepted name: Thalassiosira oestrupi earth science paleoclimate paleocean biomarkers earth science paleoclimate paleocean oxygen isotopes earth science paleoclimate paleocean carbon isotopes earth science paleoclimate paleocean reconstruction earth science paleoclimate paleocean population abundance geoscientificInformation 19010 cal yr BP 367 cal yr BP Complete 54.55315 54.55315 -168.6692 -168.6692 -1466 -1466 Ocean Pacific Ocean North Pacific Ocean HLY0202-51JPC>LATITUDE 54.55315>LONGITUDE -168.6692 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 Caissie, B.E., J. Brigham-Grette, K.T. Lawrence, T.D. Herbert, and M.S. Cook. 2010. Last Glacial Maximum to Holocene sea surface conditions at Umnak Plateau, Bering Sea, as inferred from diatom, alkenone, and stable isotope records. Paleoceanography, 25, PA1206. doi: 10.1029/2008PA001671.

The Bering Sea gateway between the Pacific and Arctic oceans impacts global climate when glacial-interglacial shifts in shore line position and ice coverage change regional albedo. Previous work has shown that during the last glacial termination and into the Holocene, sea level rises and sea ice coverage diminishes from perennial to absent. Yet, existing work has not quantified sea ice duration or sea surface temperatures (SST) during this transition. Here we combine diatom assemblages with the first alkenone record from the Bering Sea to provide a semiquantitative record of sea ice duration, SST, and productivity change since the Last Glacial Maximum (LGM). During the LGM, diatom assemblages indicate that sea ice covered the southeastern Bering Sea perennially. At 15.1 cal ka B.P., the diatom assemblage shifts to one more characteristic of seasonal sea ice and alkenones occur in the sediments in low concentrations. Deglaciation is characterized by laminated intervals with highly productive and diverse diatom assemblages and inferred high coccolithophorid production. At 11.3 cal ka B.P. the diatom assemblage shifts from one dominated by sea ice species to one dominated by a warmer water, North Pacific species. Simultaneously, the SST increases by 3°C and the southeastern Bering Sea becomes ice-free year-round. Productivity and temperature proxies are positively correlated with independently dated records from elsewhere in the Bering Sea, the Sea of Okhotsk, and the North Pacific, indicating that productivity and SST changes are coeval across the region.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/caissie2010/caissie2010.txt GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/h2-51jpc-tab.txt USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11