Investigating the impact of COVID-19 on the atmospheric 14C trend and fossil carbon load at urban and background sites in Hungary

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41320%2F25%3A103472" target="_blank" >RIV/60460709:41320/25:103472 - isvavai.cz</a>

Result on the web

<a href="https://resolve.cambridge.org/core/journals/radiocarbon/article/investigating-the-impact-of-covid19-on-the-atmospheric-14c-trend-and-fossil-carbon-load-at-urban-and-background-sites-in-hungary/304174642BFDF8C7887DAC4AF45A7C6A" target="_blank" >https://resolve.cambridge.org/core/journals/radiocarbon/article/investigating-the-impact-of-covid19-on-the-atmospheric-14c-trend-and-fossil-carbon-load-at-urban-and-background-sites-in-hungary/304174642BFDF8C7887DAC4AF45A7C6A</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1017/RDC.2024.133" target="_blank" >10.1017/RDC.2024.133</a>

Result language

angličtina

Original language name

Investigating the impact of COVID-19 on the atmospheric 14C trend and fossil carbon load at urban and background sites in Hungary

Original language description

The study analyses in situ CO2 mole fraction, (CO2)-C-14, and fossil based excess CO2 mole fraction (C-foss) data at Hegyh & aacute;ts & aacute;l (HUN) rural monitoring station (Central Europe) supplemented by passive monitoring of C-14 content of tree-rings. Through the observed period (2014-2020) we focused on revealing trends in atmospheric CO2 and C-14 levels, particularly during the year of the first COVID lockdown, in comparison to the preceding five years. In addition, monthly integrated samples of atmospheric CO2 and tree-rings from the six years were subjected to C-14 analysis. The passive tree-ring measurements focuses on two major urban areas (Budapest and Debrecen) in Hungary, along with the rural monitoring site. Results show a steady increase in CO2 levels at HUN between 2014 and 2020. The calculated fossil based excess CO2 concentrations for the initial year of COVID are in good agreement with the previous five-year averages both at 115 m and 10 m elevations. These results also show seasonal variations of CO2 mole fractions, peaking in winter and decreasing in summer. Tree-ring results from Debrecen show a good alignment with the results of the atmospheric monitoring station, and it does not show a significant fossil contribution in the urban background area during the vegetation periods. Tree-ring results from Budapest show a stronger fossil contribution compared to the Debrecen ones. Our atmospheric CO2 results do not show a large decrease in fossil CO2 atmospheric contribution during the first lockdown. We found that the use of this passive CO2 monitoring technique can provide a valuable tool for investigating such differences

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

RADIOCARBON

ISSN

0033-8222

e-ISSN

0033-8222

Volume of the periodical

67

Issue of the periodical within the volume

2

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

14

Pages from-to

251-264

UT code for WoS article

001401047700001

EID of the result in the Scopus database

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