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

Result code in 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>

Result on the web

<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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Result language

angličtina

Original language name

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

Original language description

: 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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10509 - Meteorology and atmospheric sciences

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2022

Confidentiality

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

Article name in the collection

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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Number of pages

9

Pages from-to

187-195

Publisher name

Matfyzpress

Place of publication

Praha

Event location

Praha

Event date

Jun 7, 2022

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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