noaa-icecore-13564
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.
Law Dome, Antarctica High Resolution 1999-2009 10Be Data
2012-11-07
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/13564
Investigator
J.B.
Pedro
Investigator
A.M.
Smith
Investigator
K.J.
Simon
Investigator
T.D.
van Ommen
Investigator
M.A.J.
Curran
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
radiogenic isotopes
geoscientificInformation
1999 AD
2009 AD
-49 cal yr BP
-59 cal yr BP
Complete
-66.7722
-66.73
112.8072
112.83
1370
1390
Continent
Antarctica
Law Dome DSS 0506 Pit>LATITUDE -66.7697>LONGITUDE 112.8114
Continent
Antarctica
Law Dome DSS0910 Core>LATITUDE -66.7672>LONGITUDE 112.8078
Continent
Antarctica
Law Dome DSS 0809 Core>LATITUDE -66.7672>LONGITUDE 112.8078
Continent
Antarctica
Law Dome>LATITUDE -66.73>LONGITUDE 112.83
Continent
Antarctica
Law Dome DSS 0102 Pit>LATITUDE -66.7692>LONGITUDE 112.8106
Continent
Antarctica
Law Dome DSS 0506 Core>LATITUDE -66.7722>LONGITUDE 112.8072
None
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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
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
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)
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-dss0809core.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-dss0910core.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-composite.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-dss0102pit.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-dss0506pit.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2011-10be-dss0506core.txt
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11