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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

RADIOCARBON

ISSN

0033-8222

e-ISSN

0033-8222

Svazek periodika

67

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

14

Strana od-do

251-264

Kód UT WoS článku

001401047700001

EID výsledku v databázi Scopus

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