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Emmenegger, L., Leuenberger, M., Steinbacher, M., ICOS RI, 2021. ICOS ATC/CAL 14C Release, Jungfraujoch (10.0 m), 2016-01-04–2019-08-11, https://hdl.handle.net/11676/JjmhH4pUyWlbqTAAx4x54deg
BibTex
@misc{https://hdl.handle.net/11676/JjmhH4pUyWlbqTAAx4x54deg,
  author={Emmenegger, L., Leuenberger, M., Steinbacher, M.},
  title={ICOS ATC/CAL 14C Release, Jungfraujoch (10.0 m), 2016-01-04–2019-08-11},
  year={2021},
  url={https://hdl.handle.net/11676/JjmhH4pUyWlbqTAAx4x54deg},
  publisher={Atmosphere Thematic Centre},
  copyright={https://data.icos-cp.eu/licence},
  pid={11676/JjmhH4pUyWlbqTAAx4x54deg}
}
RIS
TY - DATA
T1 - ICOS ATC/CAL 14C Release, Jungfraujoch (10.0 m), 2016-01-04–2019-08-11
ID - 11676/JjmhH4pUyWlbqTAAx4x54deg
PY - 2021
UR - https://hdl.handle.net/11676/JjmhH4pUyWlbqTAAx4x54deg
PB - Atmosphere Thematic Centre
AU - Emmenegger, L.
AU - Leuenberger, M.
AU - Steinbacher, M.
ER - 
ICOS_ATC_L2_L2-2021.1_JFJ_10.0_779_14C.zip
2839
The ICOS Central Radiocarbon Laboratory (CRL) central task is the high-precision measurement of the ¹⁴C content in atmospheric CO₂. The ¹⁴CO₂ activity is determined for grab samples (flask) as well as for two-week integrated ambient air samples. Two ¹⁴CO₂ analytical techniques are applied in the CRL: Accelerator Mass Spectrometry (AMS) in collaboration with the CEZA laboratory in Mannheim, Germany (Lux, 2019), and Low-Level gas proportional Counting (LLC) (Kromer & Münnich, 1992). The comparability of both measurement techniques is continuously monitored and was documented in Hammer et al. (2017)
Lux, J. T. (2018). A new target preparation facility for high precision AMS measurements and strategies for efficient ¹⁴CO₂ sampling (Doctoral dissertation). DOI: https://doi.org/10.11588/heidok.00024767
Kromer, B., & Münnich, K. O. (1992). CO₂ gas proportional counting in radiocarbon dating—review and perspective. Radiocarbon after four decades, 184-197. DOI: https://doi.org/10.1007/978-1-4757-4249-7_13
Hammer, S., Friedrich, R., Kromer, B., Cherkinsky, A., Lehman, S. J., Meijer, H. A., ... & Uchida, M. (2017). Compatibility of Atmospheric ¹⁴CO₂ Measurements: Comparing the Heidelberg Low-Level Counting Facility to International Accelerator Mass Spectrometry (AMS) Laboratories. Radiocarbon, 59(3), 875-883. DOI: https://doi.org/10.1017/RDC.2016.62
See also CEZA laboratory: https://www.ceza.de/en
2
zip
2639a11f8a54c9695ba93000c78c79e1d7a0f31d142fc15cb35a327b89be8c4b
JjmhH4pUyWlbqTAAx4x54deg8x0UL8Fcs1oye4m+jEs
ICOS

Previewable variables

Name Value type Unit Quantity kind
TIMESTAMP time instant, UTC
IntegrationTime integration time day number
14C Δ14C per mil portion
WeightedStdErr standard deviation of gas mole fraction µmol mol-1 portion
NbPoints number of points number
Flag quality flag

Acquisition

2016-01-04 00:00:00
2019-08-12 00:00:00
10.0

Production

2021-05-26 09:39:03

Submission

2021-05-25 10:28:11
2021-05-25 10:28:14

Spatial coverage

Lat: 46.5475, Lon: 7.9851, Alt: 3580.0 m