Number of the records: 1
Estimation of long-term trends in the tropospheric 14CO2 activity concentration
- 1.
SYSNO ASEP 0346298 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Estimation of long-term trends in the tropospheric 14CO2 activity concentration Author(s) Světlík, Ivo (UJF-V) RID, ORCID, SAI
Povinec, P. P. (SK)
Molnár, M. (HU)
Meinhardt, F. (DE)
Michálek, V. (CZ)
Simon, J. (SK)
Svingor, E. (HU)Source Title Radiocarbon. - : Cambridge University Press - ISSN 0033-8222
Roč. 52, č. 2-3 (2010), s. 815-822Number of pages 8 s. Action International Radiocarbon Conference /20./ Event date 31.05.2009-05.06.2009 VEvent location Big Island, Hawai Country US - United States Event type WRD Language eng - English Country US - United States Keywords 14CO2 ; activity concentration ; greenhouse gasses ; fossil fuel combustion Subject RIV DG - Athmosphere Sciences, Meteorology CEZ AV0Z10480505 - UJF-V (2005-2011) UT WOS 000285437800063 Annotation Fossil CO2 emissions have been diluting the global 14C/C ratio of atmospheric CO2 (Suess effect). We estimated the 14CO2 amount in the atmosphere (and its trend) utilizing the calculated 14CO2 activity concentration in the atmosphere (aacn, reported in mBq m–3). This parameter, calculated from Δ14CO2 and the CO2 mixing ratio (reported in micromoles of CO2 per mole of air), is connected with the 14CO2 quantity in the volume or mass unit of air, which is not influenced by the Suess effect. This parameter can only be influenced by processes linked to 14CO2 emissions/uptake, e.g. associated with atmosphere-biosphere or atmosphere-ocean CO2 exchange as well as by anthropogenic emissions of 14CO2. Results obtained from measurements at Schauinsland station, Germany, indicate a stable amount of 14CO2 in the atmosphere since the early 1990s, which is a tracer for atmospheric CO2. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2011
Number of the records: 1