Law Dome, Antarctica High Resolution 1999-2009 10Be Data Pedro, J.B.; Smith, A.M.; Simon, K.J.; van Ommen, T.D.; Curran, M.A.J. Pedro, J.B. Smith, A.M. Simon, K.J. van Ommen, T.D. Curran, M.A.J. earth science/paleoclimate/ice cores (ice age,null,null,year Common Era,null,ice cores,null,null,N,null) earth science/paleoclimate/ice cores (delta 18O,bulk ice,null,per mil VSMOW,null,ice cores,null,null,N,null) earth science/paleoclimate/ice cores (10Be,bulk ice,one standard error,null,null,ice cores,composited,accelerator mass spectrometry,N,atom per milligram) earth science/paleoclimate/ice cores (10Be,bulk ice,null,null,null,ice cores,null,accelerator mass spectrometry,N,atom per milligram) earth science/paleoclimate/ice cores (10Be,bulk ice,one standard error,null,null,ice cores,null,accelerator mass spectrometry,N,atom per milligram) earth science/paleoclimate/ice cores (delta 18O,bulk ice,null,per mil VSMOW,null,ice cores,composited,null,N,null) earth science/paleoclimate/ice cores (depth,null,null,meter,null,ice cores,null,null,N,null) earth science/paleoclimate/ice cores (10Be,bulk ice,null,null,null,ice cores,composited,accelerator mass spectrometry,N,atom per milligram) earth science/paleoclimate/ice core (Law Dome DSS 0506 Pit>LATITUDE -66.7697>LONGITUDE 112.8114) (Law Dome DSS0910 Core>LATITUDE -66.7672>LONGITUDE 112.8078) (Law Dome DSS 0809 Core>LATITUDE -66.7672>LONGITUDE 112.8078) (Law Dome>LATITUDE -66.73>LONGITUDE 112.83) (Law Dome DSS 0102 Pit>LATITUDE -66.7692>LONGITUDE 112.8106) (Law Dome DSS 0506 Core>LATITUDE -66.7722>LONGITUDE 112.8072) Three near-monthly resolution 10Be records are presented from the Dome Summit South (DSS) ice core site, Law Dome, East Antarctica. The chemical preparation and Accelerator Mass Spectrometer (AMS) measurement of these records is described. The reproducibility of 10Be records at DSS is assessed through intercomparison of the ice core data with data from two previously published and contemporaneous snow pits. We find generally good agreement between the five records, comparable to that observed between other trace chemical records from the site. This result allays concerns raised by a previous Antarctic study (Moraal et al., 2005) about poor reproducibility of ice core 10Be records. A single composite series is constructed from the three ice cores providing a monthly-resolved record of 10Be concentrations at DSS over the past decade (1999 to 2009). To our knowledge, this is the first published ice core data spanning the recent exceptional solar minimum of solar cycle 23. 10Be concentrations are significantly correlated to the cosmic ray flux recorded by the McMurdo neutron monitor (rxy = 0.64, with 95 % CI of 0.53 to 0.71), suggesting that solar modulation of the atmospheric production rate may explain up to ~40 % of the variance in 10Be concentrations at DSS. Sharp concentration peaks occur in most years during the summer-to-autumn, possibly caused by stratospheric incursions. Our results underscore the presence of both production and meteorological signals in ice core 10Be data. STUDY NOTES: Five high-resolution (near monthly) records of 10Be concentration in snow from Law Dome, East Antarctica: DSS0102-pit, DSS0506-pit, DSS0506-core, DSS0809-core and DSS0910-core. A single composite series is constructed from three of these records (DSS0506-core, DSS0809-core and DSS0102-pit), providing a monthly-resolved time-series of 10Be concentrations at DSS over the decade spanning 1999 to 2009. Note that in constructing the composite each individual record is first interpolated onto an even monthly grid. For details refer to Pedro et al, Clim. Past. 7., 707-721, 2011. Please note that a revised verision of the dating of the composite record is reported in Pedro et al., J. Geophys. Res., 2011. The data with revised dating is available at the AAD data centre and the NOAA WDC Palaeo data servers. Standard deviation of the d18O values for repeated measurements of laboratory reference water samples was less than 0.07 %. Data generated 16 June 2011 Note: All measurements are calibrated to the NIST SRM 4325 10Be standard reference material, utilising the Nishiizumi et al. (2007) 10Be:9Be ratio of (2.79 +/- 0.02) x 10^(-11) NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Pedro, J.B. Investigator : Smith, A.M. Investigator : Simon, K.J. Investigator : van Ommen, T.D. Investigator : Curran, M.A.J. 2012-11-07 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/13564 https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-dss0809core.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-dss0910core.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-composite.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-dss0102pit.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-dss0506pit.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-dss0506core.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-dss0809core.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-dss0910core.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-composite.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-dss0102pit.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-dss0506pit.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-dss0506core.txt English https://www.ncdc.noaa.gov/paleo/study/13564 https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-dss0809core.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-dss0910core.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-composite.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-dss0102pit.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-dss0506pit.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-dss0506core.txt J.B. Pedro, A.M. Smith, K.J. Simon, T.D. van Ommen, and M.A.J. Curran. 2011. High-resolution records of the beryllium-10 solar activity proxy in ice from Law Dome, East Antarctica: measurement, reproducibility and principal trends. Climate of the Past, Vol. 7, pp. 707-721. DOI: 10.5194/cp-7-707-2011 START YEAR: 1999 AD * END YEAR: 2009 AD 112.8072 -66.7722 112.83 -66.73