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Solar, Atmospheric, and Volcanic Impacts on 10Be Depositions in Greenland and Antarctica During the Last 100 Years

Zheng, Minjie LU ; Adolphi, Florian LU ; Paleari, Chiara LU ; Tao, Qin LU orcid ; Erhardt, Tobias ; Christl, Marcus ; Wu, Mousong LU ; Lu, Zhengyao LU ; Hörhold, Maria and Chen, Peng LU , et al. (2023) In Journal of Geophysical Research: Atmospheres 128(16).
Abstract
Cosmogenic radionuclides (e.g., 10Be) from ice cores are a powerful tool for solar reconstructions back in time. However, superimposed on the solar signal, other factors like weather/climate and volcanic influences on 10Be can complicate the interpretation of 10Be data. A comprehensive study of 10Be records over the recent period, when atmospheric 10Be production and meteorological conditions are relatively well-known, can improve our interpretation of 10Be records. Here we conduct a systematic study of the production and climate/volcanic signals in Antarctica and Greenland 10Be records, including a new 10Be record from the East GReenland Ice-core Project site. Greenland and Antarctica records show significant decreasing trends... (More)
Cosmogenic radionuclides (e.g., 10Be) from ice cores are a powerful tool for solar reconstructions back in time. However, superimposed on the solar signal, other factors like weather/climate and volcanic influences on 10Be can complicate the interpretation of 10Be data. A comprehensive study of 10Be records over the recent period, when atmospheric 10Be production and meteorological conditions are relatively well-known, can improve our interpretation of 10Be records. Here we conduct a systematic study of the production and climate/volcanic signals in Antarctica and Greenland 10Be records, including a new 10Be record from the East GReenland Ice-core Project site. Greenland and Antarctica records show significant decreasing trends (5%–6.5%/decade) for 1900–1950, which is comparable with the expected production rate inferred from sunspot observations. By comparing 10Be records with reanalysis data and atmospheric circulation patterns, 10Be records from Southern/Southeastern Greenland are significantly correlated with the Scandinavia pattern. Stacking 10Be records from different locations can enhance the production signal. However, this approach is not always straightforward as uncertainties in some records can lead to a weaker solar signal. A strategy can be employed to select records for the bipolar stack by comparing Greenland records with Antarctica records, assuming the shared signal is a production signal. Finally, we observe significant increases (36%–64%) in 10Be depositions in Greenland related to the Agung eruption. This large increase in Greenland 10Be records after the Agung eruption, could be partly explained by the enhanced air mass transport from mid-latitudes coinciding with the decreased precipitation en-route. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Geophysical Research: Atmospheres
volume
128
issue
16
article number
e2022JD038392
publisher
Wiley-Blackwell
external identifiers
  • scopus:85168431227
ISSN
2169-8996
DOI
10.1029/2022JD038392
language
English
LU publication?
yes
id
3b3d672a-3ae9-40eb-a7dd-7feaad108fbc
date added to LUP
2023-11-29 11:35:52
date last changed
2023-12-08 11:45:23
@article{3b3d672a-3ae9-40eb-a7dd-7feaad108fbc,
  abstract     = {{Cosmogenic radionuclides (e.g., 10Be) from ice cores are a powerful tool for solar reconstructions back in time. However, superimposed on the solar signal, other factors like weather/climate and volcanic influences on 10Be can complicate the interpretation of 10Be data. A comprehensive study of 10Be records over the recent period, when atmospheric 10Be production and meteorological conditions are relatively well-known, can improve our interpretation of 10Be records. Here we conduct a systematic study of the production and climate/volcanic signals in Antarctica and Greenland 10Be records, including a new 10Be record from the East GReenland Ice-core Project site. Greenland and Antarctica records show significant decreasing trends (5%–6.5%/decade) for 1900–1950, which is comparable with the expected production rate inferred from sunspot observations. By comparing 10Be records with reanalysis data and atmospheric circulation patterns, 10Be records from Southern/Southeastern Greenland are significantly correlated with the Scandinavia pattern. Stacking 10Be records from different locations can enhance the production signal. However, this approach is not always straightforward as uncertainties in some records can lead to a weaker solar signal. A strategy can be employed to select records for the bipolar stack by comparing Greenland records with Antarctica records, assuming the shared signal is a production signal. Finally, we observe significant increases (36%–64%) in 10Be depositions in Greenland related to the Agung eruption. This large increase in Greenland 10Be records after the Agung eruption, could be partly explained by the enhanced air mass transport from mid-latitudes coinciding with the decreased precipitation en-route.}},
  author       = {{Zheng, Minjie and Adolphi, Florian and Paleari, Chiara and Tao, Qin and Erhardt, Tobias and Christl, Marcus and Wu, Mousong and Lu, Zhengyao and Hörhold, Maria and Chen, Peng and Muscheler, Raimund}},
  issn         = {{2169-8996}},
  language     = {{eng}},
  month        = {{08}},
  number       = {{16}},
  publisher    = {{Wiley-Blackwell}},
  series       = {{Journal of Geophysical Research: Atmospheres}},
  title        = {{Solar, Atmospheric, and Volcanic Impacts on 10Be Depositions in Greenland and Antarctica During the Last 100 Years}},
  url          = {{http://dx.doi.org/10.1029/2022JD038392}},
  doi          = {{10.1029/2022JD038392}},
  volume       = {{128}},
  year         = {{2023}},
}