Počet záznamů: 1
A seven-years based characterisation of aerosol light scattering properties at Central European rural site: Variability and Source apportionment
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SYSNO ASEP 0572493 Druh ASEP A - Abstrakt Zařazení RIV Záznam nebyl označen do RIV Zařazení RIV Není vybrán druh dokumentu Název A seven-years based characterisation of aerosol light scattering properties at Central European rural site: Variability and Source apportionment Tvůrce(i) Suchánková, Lenka (UEK-B) RID, SAI, ORCID
Mbengue, Saliou (UEK-B) SAI, RID, ORCID
Zíková, Naděžda (UCHP-M) RID, ORCID, SAI
Ondráček, Jakub (UCHP-M) RID, ORCID, SAI
Holubová Šmejkalová, A. (CZ)
Holoubek, Ivan (UEK-B) SAI, ORCID, RID
Prokeš, Roman (UEK-B) RID, SAI, ORCID
Ždímal, Vladimír (UCHP-M) RID, ORCID, SAIZdroj.dok. SBORNÍK XXI. VÝROČNÍ KONFERENCE ČESKÉ AEROSOLOVÉ SPOLEČNOSTI. - : Česká aerosolová společnost, 2022 / Lhotka Radek - ISBN 978-80-908653-0-3
S. 17-22Poč.str. 6 s. Akce 21stANNUAL CONFERENCE OF THE CZECH AEROSOL SOCIETY Datum konání 03.10.2022 - 04.10.2022 Místo konání Kutná Hora Země CZ - Česká republika Typ akce CST Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova light scattering ; aerosol ; climate change ; long-term measurement ; naok ; actris ; temporal variability Vědní obor RIV DG - Vědy o atmosféře, meteorologie Obor OECD Meteorology and atmospheric sciences Vědní obor RIV – spolupráce Ústav chemických procesů - Vědy o atmosféře, meteorologie CEP LM2018123 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy LO1415 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UEK-B - RVO:86652079 ; UCHP-M - RVO:67985858 Anotace Atmospheric aerosols have a significant impact on the radiative forcing of Earth's climate, either directly through aerosol radiative interactions (ARIs), i.e., scattering or
absorption of incoming solar and outgoing infrared radiation, or indirectly through aerosolcloud interactions (ACIs) (Boucher, 2015, IPCC, 2013, Luoma et al., 2019, Ramanathan et al.,
2001). The aerosol radiative forcing of the direct effect consists of a warming effect and a cooling effect (Boucher et al., 2013,Charlson et al., 1992, IPCC et al., 2013). The predominant
cooling effect results from the scattering of radiation by certain species of atmospheric aerosols (including sea salts, nitrates, sulfates, mineral and organic matter, etc.) that reduce
the amount of solar radiation reaching the Earth's surface (IPCC, 2013). This phenomenon offsets the greenhouse effect and alters the radiation balance (Pandolfi et al., 2018).
According to a number of studies, radiative forcing by aerosols remains one of the main sources of uncertainty in a climate model estimation due to the strong spatial and
temporal variations in chemical and physical properties, short lifetime compared to greenhouse gasses, and diversity of aerosol sources (Boucher, 2015, Charlson et al., 1992,
Lee et al., 2016, Luoma et al., 2019). These studies are important for a better understanding of local and long-range transport of both anthropogenic pollutants and natural sources and
for unbiased long-term trends. The aim of this study is to focus on the temporal variations of light-scattering properties of aerosols at a rural site in Central Europe. The total light scattering (σsp) and backscattering (σbsp) coefficients and associated calculated optical properties such as the Ångström exponent (SAE), the backscattering ratio (b), and the asymmetry factor (g), are characterized considering different time scales (annual, seasonal, monthly, or diurnal) based on long-term measurement. The optical properties were compared with meteorological conditions (fog, cloudiness), the concentration of gaseous pollutants such as NOx and SO2 was inspected as well as potential sources of atmospheric aerosols. In addition, radiative forcing,and the influence of other meteorological conditions (e.g., height of planetary boundary ayer), chemical composition and particle size distribution at the National Atmospheric Observatory Košetice (NAOK) are being further investigated to better understand the direct effects of aerosols on the local climate.
Pracoviště Ústav výzkumu globální změny Kontakt Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Rok sběru 2024
Počet záznamů: 1