Is dust an important source of aerosol particles in northern Europe?
(2024) PHYL01 20241Combustion Physics
Department of Physics
- Abstract
- Aerosols are one of the significant factors influencing climate, environment, and human health. They are categorized into anthropogenic and natural sources. In Sweden, natural aerosol sources of high coarse mode particle mass concentrations for particles larger than 1 µm in diameter include sea spray, primary biogenic particles, and dust particles. The dust particles can be agricultural soil and mineral dust, road dust, high-latitude dust, and transport of dust from the Saharan Desert. These sources exhibit local, regional, or even long-distance transport characteristics. Classifying these natural aerosol sources is beneficial considering their impacts.
This study aimed to identify transport events of coarse particles from the Saharan... (More) - Aerosols are one of the significant factors influencing climate, environment, and human health. They are categorized into anthropogenic and natural sources. In Sweden, natural aerosol sources of high coarse mode particle mass concentrations for particles larger than 1 µm in diameter include sea spray, primary biogenic particles, and dust particles. The dust particles can be agricultural soil and mineral dust, road dust, high-latitude dust, and transport of dust from the Saharan Desert. These sources exhibit local, regional, or even long-distance transport characteristics. Classifying these natural aerosol sources is beneficial considering their impacts.
This study aimed to identify transport events of coarse particles from the Saharan Desert, and estimate source contribution of coarse mode dust particle mass concentration in Hyltemossa, southern Sweden (56.098N 13.419E). Observational data of PM10 and PM1, meteorological data, and ceilometer backscatter data were used during spring seasons between 2018 and 2023. The analysis focused on extracting periods of high concentrations considered as dust events using 24-hour average mass concentration of PM10-1, and further examining four periods (each a week duration) with high afternoon peak concentrations based on hourly averages.
One occasion with dust transport from Sahara was identified using the ceilometer data, with transport via France, the UK, and Norway between March 20 and 23, 2020. The ceilometer analysis proved difficult to perform, why it needs supplement from other complementary remote sensing analysis.
The results suggested that the afternoon dust peak events during the selected four periods were likely caused by dust blowing up from near-regional road and agricultural areas, facilitated by the formation of the convective boundary layer and increasing wind speeds from daytime to afternoon. Contribution rates to total mass concentration from dust ranged from 10% to 22% for the four periods, with an estimated mass concentration of PM10-1 between 1 and 2 µg/m³. This was considered as a minimum estimate of dust contribution. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/9155521
- author
- Nagatomi, Hiroki LU
- supervisor
-
- Adam Kristensson LU
- Göran Frank LU
- organization
- course
- PHYL01 20241
- year
- 2024
- type
- M2 - Bachelor Degree
- subject
- language
- English
- id
- 9155521
- date added to LUP
- 2024-05-30 12:44:42
- date last changed
- 2024-05-30 12:44:42
@misc{9155521,
abstract = {{Aerosols are one of the significant factors influencing climate, environment, and human health. They are categorized into anthropogenic and natural sources. In Sweden, natural aerosol sources of high coarse mode particle mass concentrations for particles larger than 1 µm in diameter include sea spray, primary biogenic particles, and dust particles. The dust particles can be agricultural soil and mineral dust, road dust, high-latitude dust, and transport of dust from the Saharan Desert. These sources exhibit local, regional, or even long-distance transport characteristics. Classifying these natural aerosol sources is beneficial considering their impacts.
This study aimed to identify transport events of coarse particles from the Saharan Desert, and estimate source contribution of coarse mode dust particle mass concentration in Hyltemossa, southern Sweden (56.098N 13.419E). Observational data of PM10 and PM1, meteorological data, and ceilometer backscatter data were used during spring seasons between 2018 and 2023. The analysis focused on extracting periods of high concentrations considered as dust events using 24-hour average mass concentration of PM10-1, and further examining four periods (each a week duration) with high afternoon peak concentrations based on hourly averages.
One occasion with dust transport from Sahara was identified using the ceilometer data, with transport via France, the UK, and Norway between March 20 and 23, 2020. The ceilometer analysis proved difficult to perform, why it needs supplement from other complementary remote sensing analysis.
The results suggested that the afternoon dust peak events during the selected four periods were likely caused by dust blowing up from near-regional road and agricultural areas, facilitated by the formation of the convective boundary layer and increasing wind speeds from daytime to afternoon. Contribution rates to total mass concentration from dust ranged from 10% to 22% for the four periods, with an estimated mass concentration of PM10-1 between 1 and 2 µg/m³. This was considered as a minimum estimate of dust contribution.}},
author = {{Nagatomi, Hiroki}},
language = {{eng}},
note = {{Student Paper}},
title = {{Is dust an important source of aerosol particles in northern Europe?}},
year = {{2024}},
}