Different approaches to explore the impact of COVID-19 lockdowns on carbonaceous aerosols at a European rural background site.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F23%3A00584264" target="_blank" >RIV/67985858:_____/23:00584264 - isvavai.cz</a>

Alternative codes found

RIV/86652079:_____/23:00573900 RIV/00216224:14310/23:00131499 RIV/00216208:11320/23:10474226

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0048969723031480?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0048969723031480?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.scitotenv.2023.164527" target="_blank" >10.1016/j.scitotenv.2023.164527</a>

Result language

angličtina

Original language name

Different approaches to explore the impact of COVID-19 lockdowns on carbonaceous aerosols at a European rural background site.

Original language description

To prevent the fast spread of COVID-19, worldwide restrictions have been put in place, leading to a reduction in emis-sions from most anthropogenic sources. In this study, the impact of COVID-19 lockdowns on elemental (EC) and or-ganic (OC) carbon was explored at a European rural background site combining different approaches: - Horizontal approach (HA) consists of comparing concentrations of pollutants measured at 4 m a.g.l. during pre-COVID period (2017-2019) to those measured during COVID period (2020-2021), - Vertical approach (VA) con-sists of inspecting the relationship between OC and EC measured at 4 m and those on top (230 m) of a 250 m-tall tower in Czech Republic. The HA showed that the lockdowns did not systematically result in lower concentrations of both carbonaceous fractions unlike NO2 (25 to 36 % lower) and SO2 (10 to 45 % lower). EC was generally lower during the lockdowns (up to 35 %), likely attributed to the traffic restrictions whereas increased OC (up to 50 %) could be attributed to enhanced emissions from the domestic heating and biomass burning during this stay-home pe-riod, but also to the enhanced concentration of SOC (up to 98 %). EC and OC were generally higher at 4 m suggesting a greater influence of local sources near the surface. Interestingly, the VA revealed a significantly enhanced correlation between EC and OC measured at 4 m and those at 230 m (R values up to 0.88 and 0.70 during lockdown 1 and 2, re-spectively), suggesting a stronger influence of aged and long distance transported aerosols during the lockdowns. This study reveals that lockdowns did not necessarily affect aerosol absolute concentrations but it certainly influenced their vertical distribution. Therefore, analyzing the vertical distribution can allow a better characterization of aerosol prop-erties and sources at rural background sites, especially during a period of significantly reduced human activities.

Czech name

—

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

—

OECD FORD branch

10509 - Meteorology and atmospheric sciences

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

Science of the Total Environment

ISSN

0048-9697

e-ISSN

1879-1026

Volume of the periodical

892

Issue of the periodical within the volume

SEP 20

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

11

Pages from-to

164527

UT code for WoS article

001026002000001

EID of the result in the Scopus database

2-s2.0-85162083490