Cover Image

Temporal variation of atmospheric fossil and modern CO2 excess at a Central European rural tower station between 2008 and 2014

In 2008, the atmospheric CO2 measurements at the Hegyhátsál rural tower station were extended further by 14CO2 air sampling from two elevations (115 and 10 m a.g.l.), in cooperation with HEKAL (ICER). Since then, a complete six-year-long (2008-2014) dataset of atmospheric CO2, Δ14C, fossil, and mo...

Full description

Saved in:
Bibliographic Details
Main Authors: Major, István (Author) , Hammer, Samuel (Author)
Format: Article (Journal)
Language:English
Published: October 2018
In: Radiocarbon
Year: 2018, Volume: 60, Issue: 5, Pages: 1285-1299
ISSN:1945-5755
DOI:10.1017/RDC.2018.79
Online Access:Verlag, Volltext: https://doi.org/10.1017/RDC.2018.79
Verlag, Volltext: https://www.cambridge.org/core/journals/radiocarbon/article/temporal-variation-of-atmospheric-fossil-and-modern-co2-excess-at-a-central-european-rural-tower-station-between-2008-and-2014/2CD6B04E01B52F86636D8BAF37CBA3AA
Get full text
Author Notes:István Major, László Haszpra, László Rinyu, István Futó, Árpád Bihari, Samuel Hammer, A. J. Timothy Jull, Mihály Molnár
Description
Summary:In 2008, the atmospheric CO2 measurements at the Hegyhátsál rural tower station were extended further by 14CO2 air sampling from two elevations (115 and 10 m a.g.l.), in cooperation with HEKAL (ICER). Since then, a complete six-year-long (2008-2014) dataset of atmospheric CO2, Δ14C, fossil, and modern CO2 excess (relative to Jungfraujoch) has been assembled and evaluated. Based on our results, the annual mean CO2 mole fraction rose at both elevations in this period. The annual mean Δ14CO2 values decreased with a similar average annual decline. Based on our comparison, planetary boundary layer height obtained by modeling has a larger influence on the variation of mole fraction of CO2 (relative to Jungfraujoch), than on its carbon isotopic composition, i.e. the boundary layer rather represents a physical constraint. Fossil fuel CO2 excess at both elevations can rather be observed in wintertime and mainly due to the increased anthropogenic emission of nearby cities in the region. The mean modern CO2 excess at both elevations was even larger in winter, but it drastically decreased at 115 m by summer, while it remained at the winter level at 10 m.
Item Description:Radiocarbon & Diet 2 International Conference Aarhus, Denmark, June 20–23, 2017
Gesehen am 25.09.2019
Physical Description:Online Resource
ISSN:1945-5755
DOI:10.1017/RDC.2018.79

Similar Items