High-resolution records of the beryllium-10 solar activity proxy in ice from Law Dome, East Antarctica: measurement, reproducibility and principal trends
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 throu...
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fttriple:oai:gotriple.eu:vAwECnZujOfuF96RNDEqK 2023-05-15T13:40:50+02:00 High-resolution records of the beryllium-10 solar activity proxy in ice from Law Dome, East Antarctica: measurement, reproducibility and principal trends Pedro, J. B. Smith, A. M. Simon, K. J. Ommen, T. D. Curran, M. A. J. 2018-09-27 https://doi.org/10.5194/cp-7-707-2011 https://cp.copernicus.org/articles/7/707/2011/ en eng Copernicus Publications doi:10.5194/cp-7-707-2011 10670/1.fiyivl 1814-9324 1814-9332 https://cp.copernicus.org/articles/7/707/2011/ undefined Geographica Helvetica - geography eISSN: 1814-9332 geo envir Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2018 fttriple https://doi.org/10.5194/cp-7-707-2011 2023-01-22T17:52:11Z 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. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica ice core Unknown Antarctic East Antarctica Law Dome ENVELOPE(112.833,112.833,-66.733,-66.733) Climate of the Past 7 3 707 721 |
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Open Polar |
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language |
English |
topic |
geo envir |
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geo envir Pedro, J. B. Smith, A. M. Simon, K. J. Ommen, T. D. Curran, M. A. J. High-resolution records of the beryllium-10 solar activity proxy in ice from Law Dome, East Antarctica: measurement, reproducibility and principal trends |
topic_facet |
geo envir |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Pedro, J. B. Smith, A. M. Simon, K. J. Ommen, T. D. Curran, M. A. J. |
author_facet |
Pedro, J. B. Smith, A. M. Simon, K. J. Ommen, T. D. Curran, M. A. J. |
author_sort |
Pedro, J. B. |
title |
High-resolution records of the beryllium-10 solar activity proxy in ice from Law Dome, East Antarctica: measurement, reproducibility and principal trends |
title_short |
High-resolution records of the beryllium-10 solar activity proxy in ice from Law Dome, East Antarctica: measurement, reproducibility and principal trends |
title_full |
High-resolution records of the beryllium-10 solar activity proxy in ice from Law Dome, East Antarctica: measurement, reproducibility and principal trends |
title_fullStr |
High-resolution records of the beryllium-10 solar activity proxy in ice from Law Dome, East Antarctica: measurement, reproducibility and principal trends |
title_full_unstemmed |
High-resolution records of the beryllium-10 solar activity proxy in ice from Law Dome, East Antarctica: measurement, reproducibility and principal trends |
title_sort |
high-resolution records of the beryllium-10 solar activity proxy in ice from law dome, east antarctica: measurement, reproducibility and principal trends |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/cp-7-707-2011 https://cp.copernicus.org/articles/7/707/2011/ |
long_lat |
ENVELOPE(112.833,112.833,-66.733,-66.733) |
geographic |
Antarctic East Antarctica Law Dome |
geographic_facet |
Antarctic East Antarctica Law Dome |
genre |
Antarc* Antarctic Antarctica East Antarctica ice core |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica ice core |
op_source |
Geographica Helvetica - geography eISSN: 1814-9332 |
op_relation |
doi:10.5194/cp-7-707-2011 10670/1.fiyivl 1814-9324 1814-9332 https://cp.copernicus.org/articles/7/707/2011/ |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/cp-7-707-2011 |
container_title |
Climate of the Past |
container_volume |
7 |
container_issue |
3 |
container_start_page |
707 |
op_container_end_page |
721 |
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1766141004226756608 |