ICOS ATC 14C Release analysed by ICOS CRL from Norunda (100.0 m), 2015-09-29–2025-08-19
type: Dataset
description: 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 Lehner, I., Molder, M. (2026). ICOS ATC 14C Release analysed by ICOS CRL from Norunda (100.0 m), 2015-09-29–2025-08-19, ICOS RI, https://hdl.handle.net/11676/ERgKHJBISMZzcpKz8BmwUN41
creative work status: completed
  type: DefinedTerm
  in defined term set: http://publications.europa.eu/resource/authority/dataset-status
  term code: COMPLETED
creator: Irene Lehner
creator: Meelis Molder
date modified: 2026-07-01
date published: 2026-07-01
language: English
keywords: Oceanography, Hydrology and Water Resources
  type: DefinedTerm
  term code: 10509
keywords: Meteorology and Atmospheric Sciences
  type: DefinedTerm
  term code: 10508
keywords: Physical Geography
  type: DefinedTerm
  term code: 10507
keywords: Environmental Sciences
  type: DefinedTerm
  term code: 10502
keywords: Climate Science
  type: DefinedTerm
  term code: 10501
keywords: Atmosphere Thematic Centre
keywords: 14CO2
keywords: ICOS
keywords: time instant, UTC
keywords: integration time
keywords: Δ14C
keywords: weighted standard error of Δ¹⁴C
keywords: number of points
keywords: quality flag
publisher: Integrated Carbon Observation System
temporal coverage: 2015-09-29/2025-08-19
version: 0

PropertyValue
property ID: Handle
value: https://hdl.handle.net/11676/ERgKHJBISMZzcpKz8BmwUN41

English
type: Language
alternate name: eng

Integrated Carbon Observation System
type: Organization