noaa-ocean-10456 OMEX2 North Atlantic Seasonal Sediment Trap Foraminifera Data Chapman, M.R. OMEX2 North Atlantic Seasonal Sediment Trap Foraminifera Data 2010-03-17 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/10456 Investigator M.R. Chapman earth science paleoclimate paleocean population abundance geoscientificInformation 1993 AD 1994 AD -43 cal yr BP -44 cal yr BP Complete 49 49 -13 -13 Ocean Atlantic Ocean North Atlantic Ocean OMEX2>LATITUDE 49>LONGITUDE -13 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

325 Broadway, E/NE31

Boulder CO 80305-3328 USA online ASCII Chapman, M.R. 2010. Seasonal production patterns of planktonic foraminifera in the NE Atlantic Ocean: Implications for paleotemperature and hydrographic reconstructions. Paleoceanography, 25, PA1101, doi:10.1029/2008PA001708.

Sediment trap samples from OMEX 2 (49°N, 13°W) provide a continuous record of the seasonal succession of planktonic foraminifera in the midlatitude North Atlantic and reveal a complex relationship between periods of production and specific hydrographic conditions. Neogloboquadrina pachyderma dextral coiling (d.), Globigerina bulloides, and Globorotalia inflata are found in great numbers during both the spring and summer seasons, whereas Globigerina quinqueloba, Globorotalia hirsuta, Globorotalia scitula, and Globigerinita glutinata are associated predominantly with the increase in productivity during the spring bloom. Globigerinella aequilateralis, Orbulina universa, and Globigerinoides sacculifer are restricted to late summer conditions following the establishment of a warm, well-stratified surface ocean. An annually integrated fauna from the sediment trap, comprising ~13,000 individuals, is used to evaluate the accuracy of five faunal-based statistical methods of paleotemperature estimation. All of the temperature reconstruction techniques produce estimates of ~16°C and ~11°C for summer and winter surface temperature, respectively, which are in excellent agreement with regional hydrographic data and suggest that the sediment trap assemblage is well represented in the core top faunas. Analysis of the key species that dominate the OMEX 2 sediment trap fauna, G. bulloides, G. inflata, and N. pachyderma d., based on d18O derived temperatures from North Atlantic core top samples, suggests that seasonal variations in planktonic foraminiferal production are nonuniform across the midlatitudes and that this is likely to complicate reconstructing past seasonal hydrographic dynamics using these taxa. STUDY NOTES: Sediment trap foraminifera data for the North Atlantic (49°N, 13°W) from the OMEX 2 project, at sub-seasonal resolution.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/chapman2010/chapman2010.txt GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/chapman2010/chapman2010.xls USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11