Planetary Boundary Layer Effect on Vertical Transport of Black Carbon Concentration Under Different Meteorological Conditions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F22%3A10457168" target="_blank" >RIV/00216208:11320/22:10457168 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.mff.cuni.cz/veda/konference/wds/proc/pdf22/WDS22_28_f8_Julaha.pdf" target="_blank" >https://www.mff.cuni.cz/veda/konference/wds/proc/pdf22/WDS22_28_f8_Julaha.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Planetary Boundary Layer Effect on Vertical Transport of Black Carbon Concentration Under Different Meteorological Conditions

Popis výsledku v původním jazyce

: Unlike other pollutants, aerosols, especially the absorbing aerosols,consisting mainly of &quot;black carbon&quot; (BC), interact strongly with the planetaryboundary layer (PBL). This study determines the impact of the evolution of PBL andlong-range transport on equivalent BC (eBC) concertation under different metrologicalconditions such as clear sky, foggy (visibility &lt;= 1km), and hazy day (visibility &lt;= 5 kmduring the non-fog day), high relative humidity and temperature; also, diurnal andseasonal variability was evaluated. The mean eBC concentration was found to be thelowest during summer, followed by autumn and spring, and the highest in winter forthe year 2020. In contrast, the average PBL height was the lowest in autumn, followedby summer and winter, and the highest in spring. The resulting behavior was due tothe higher number of rainy days during the summer. The eBC concentration at groundlevel showed several peaks throughout the day. The peaks during mornings andevenings were likely due to local sources and the PBL diurnal evolution. ElevatedeBC concentrations during noon and late-night have also been observed, driven by thetransport of aerosols from distant sources. The long-range transport of aerosols wasconfirmed by air mass back trajectories analysis using the HYSPLIT model. The eBCconcentration was higher below the PBL than above the PBL. Several case studieswere also studied to find the impact of different meteorological conditions. Thedevelopment of PBL was suppressed by fog and haze, further weakening the verticalmixing of aerosols, leading to higher eBC concentration at the ground. High RH(ALMOST EQUAL TO 100%) with high temperature (28 °C) yields the highest PBL height and higher eBCconcentration at 4m compared to 230 m.

Název v anglickém jazyce

Planetary Boundary Layer Effect on Vertical Transport of Black Carbon Concentration Under Different Meteorological Conditions

Popis výsledku anglicky

: Unlike other pollutants, aerosols, especially the absorbing aerosols,consisting mainly of &quot;black carbon&quot; (BC), interact strongly with the planetaryboundary layer (PBL). This study determines the impact of the evolution of PBL andlong-range transport on equivalent BC (eBC) concertation under different metrologicalconditions such as clear sky, foggy (visibility &lt;= 1km), and hazy day (visibility &lt;= 5 kmduring the non-fog day), high relative humidity and temperature; also, diurnal andseasonal variability was evaluated. The mean eBC concentration was found to be thelowest during summer, followed by autumn and spring, and the highest in winter forthe year 2020. In contrast, the average PBL height was the lowest in autumn, followedby summer and winter, and the highest in spring. The resulting behavior was due tothe higher number of rainy days during the summer. The eBC concentration at groundlevel showed several peaks throughout the day. The peaks during mornings andevenings were likely due to local sources and the PBL diurnal evolution. ElevatedeBC concentrations during noon and late-night have also been observed, driven by thetransport of aerosols from distant sources. The long-range transport of aerosols wasconfirmed by air mass back trajectories analysis using the HYSPLIT model. The eBCconcentration was higher below the PBL than above the PBL. Several case studieswere also studied to find the impact of different meteorological conditions. Thedevelopment of PBL was suppressed by fog and haze, further weakening the verticalmixing of aerosols, leading to higher eBC concentration at the ground. High RH(ALMOST EQUAL TO 100%) with high temperature (28 °C) yields the highest PBL height and higher eBCconcentration at 4m compared to 230 m.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10509 - Meteorology and atmospheric sciences

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název statě ve sborníku

WDS&apos;22 Proceedings of Contributed Papers — Physics

ISBN

978-80-7378-477-5

ISSN

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e-ISSN

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Počet stran výsledku

9

Strana od-do

187-195

Název nakladatele

Matfyzpress

Místo vydání

Praha

Místo konání akce

Praha

Datum konání akce

7. 6. 2022

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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