The Impact of Intense Winter Saharan Dust Events on PM and Optical Properties at Urban Sites in the Southeast of the Iberian Peninsula
The influence of three Saharan dust events (SDE) on particulate matter (PM) concentrations and aerosol optical properties (AOP) during February 2021 was studied. The physical characteristics of the African aerosol were different for each episode. Therefore, the impacts of the three events on PM and...
Guardado en:
| Autores principales: | , , , , , , |
|---|---|
| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
|
| Materias: | |
| Acceso en línea: | https://doaj.org/article/27222046f63e4772bce3c54f9df27067 |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| id |
oai:doaj.org-article:27222046f63e4772bce3c54f9df27067 |
|---|---|
| record_format |
dspace |
| spelling |
oai:doaj.org-article:27222046f63e4772bce3c54f9df270672021-11-25T16:45:09ZThe Impact of Intense Winter Saharan Dust Events on PM and Optical Properties at Urban Sites in the Southeast of the Iberian Peninsula10.3390/atmos121114692073-4433https://doaj.org/article/27222046f63e4772bce3c54f9df270672021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4433/12/11/1469https://doaj.org/toc/2073-4433The influence of three Saharan dust events (SDE) on particulate matter (PM) concentrations and aerosol optical properties (AOP) during February 2021 was studied. The physical characteristics of the African aerosol were different for each episode. Therefore, the impacts of the three events on PM and AOP were analyzed separately. The monitoring sites were placed in Elche, in the southeast of the Iberian Peninsula. The sites can be classified as urban background locations. The procedure used to obtain the contribution of SDE to PM<sub>10</sub> mass concentrations was the 40th percentile method. Nearly half of the days during the study period were under the influence of Saharan air masses. The average contribution of mineral dust (MD) to the PM<sub>10</sub> mean concentration was ~50%, which was the highest contribution during the month of February in the last 14 years. The results show that those events characterized by a high input of fine particles (PM<sub>1</sub> and PM<sub>2.5</sub>) caused larger increases in the absorption (σ<sub>ap</sub>) and scattering (σ<sub>sp</sub>) coefficients than SDE in which coarse particles predominated. Nevertheless, as expected, SAE (Scattering Angström Exponent) values were lowest during these episodes. AAE (Absorption Angström Exponent) values during SDE were slightly higher than those observed in the absence of African dust, suggesting some contribution from MD to the absorption process.Alba López-CaravacaRamón CastañerAlvaro ClementeEduardo YuberoNuria GalindoJavier CrespoJose Francisco NicolásMDPI AGarticlePM<sub>10</sub>desert dusturban aerosoloptical propertiesMeteorology. ClimatologyQC851-999ENAtmosphere, Vol 12, Iss 1469, p 1469 (2021) |
| institution |
DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
PM<sub>10</sub> desert dust urban aerosol optical properties Meteorology. Climatology QC851-999 |
| spellingShingle |
PM<sub>10</sub> desert dust urban aerosol optical properties Meteorology. Climatology QC851-999 Alba López-Caravaca Ramón Castañer Alvaro Clemente Eduardo Yubero Nuria Galindo Javier Crespo Jose Francisco Nicolás The Impact of Intense Winter Saharan Dust Events on PM and Optical Properties at Urban Sites in the Southeast of the Iberian Peninsula |
| description |
The influence of three Saharan dust events (SDE) on particulate matter (PM) concentrations and aerosol optical properties (AOP) during February 2021 was studied. The physical characteristics of the African aerosol were different for each episode. Therefore, the impacts of the three events on PM and AOP were analyzed separately. The monitoring sites were placed in Elche, in the southeast of the Iberian Peninsula. The sites can be classified as urban background locations. The procedure used to obtain the contribution of SDE to PM<sub>10</sub> mass concentrations was the 40th percentile method. Nearly half of the days during the study period were under the influence of Saharan air masses. The average contribution of mineral dust (MD) to the PM<sub>10</sub> mean concentration was ~50%, which was the highest contribution during the month of February in the last 14 years. The results show that those events characterized by a high input of fine particles (PM<sub>1</sub> and PM<sub>2.5</sub>) caused larger increases in the absorption (σ<sub>ap</sub>) and scattering (σ<sub>sp</sub>) coefficients than SDE in which coarse particles predominated. Nevertheless, as expected, SAE (Scattering Angström Exponent) values were lowest during these episodes. AAE (Absorption Angström Exponent) values during SDE were slightly higher than those observed in the absence of African dust, suggesting some contribution from MD to the absorption process. |
| format |
article |
| author |
Alba López-Caravaca Ramón Castañer Alvaro Clemente Eduardo Yubero Nuria Galindo Javier Crespo Jose Francisco Nicolás |
| author_facet |
Alba López-Caravaca Ramón Castañer Alvaro Clemente Eduardo Yubero Nuria Galindo Javier Crespo Jose Francisco Nicolás |
| author_sort |
Alba López-Caravaca |
| title |
The Impact of Intense Winter Saharan Dust Events on PM and Optical Properties at Urban Sites in the Southeast of the Iberian Peninsula |
| title_short |
The Impact of Intense Winter Saharan Dust Events on PM and Optical Properties at Urban Sites in the Southeast of the Iberian Peninsula |
| title_full |
The Impact of Intense Winter Saharan Dust Events on PM and Optical Properties at Urban Sites in the Southeast of the Iberian Peninsula |
| title_fullStr |
The Impact of Intense Winter Saharan Dust Events on PM and Optical Properties at Urban Sites in the Southeast of the Iberian Peninsula |
| title_full_unstemmed |
The Impact of Intense Winter Saharan Dust Events on PM and Optical Properties at Urban Sites in the Southeast of the Iberian Peninsula |
| title_sort |
impact of intense winter saharan dust events on pm and optical properties at urban sites in the southeast of the iberian peninsula |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/27222046f63e4772bce3c54f9df27067 |
| work_keys_str_mv |
AT albalopezcaravaca theimpactofintensewintersaharandusteventsonpmandopticalpropertiesaturbansitesinthesoutheastoftheiberianpeninsula AT ramoncastaner theimpactofintensewintersaharandusteventsonpmandopticalpropertiesaturbansitesinthesoutheastoftheiberianpeninsula AT alvaroclemente theimpactofintensewintersaharandusteventsonpmandopticalpropertiesaturbansitesinthesoutheastoftheiberianpeninsula AT eduardoyubero theimpactofintensewintersaharandusteventsonpmandopticalpropertiesaturbansitesinthesoutheastoftheiberianpeninsula AT nuriagalindo theimpactofintensewintersaharandusteventsonpmandopticalpropertiesaturbansitesinthesoutheastoftheiberianpeninsula AT javiercrespo theimpactofintensewintersaharandusteventsonpmandopticalpropertiesaturbansitesinthesoutheastoftheiberianpeninsula AT josefrancisconicolas theimpactofintensewintersaharandusteventsonpmandopticalpropertiesaturbansitesinthesoutheastoftheiberianpeninsula AT albalopezcaravaca impactofintensewintersaharandusteventsonpmandopticalpropertiesaturbansitesinthesoutheastoftheiberianpeninsula AT ramoncastaner impactofintensewintersaharandusteventsonpmandopticalpropertiesaturbansitesinthesoutheastoftheiberianpeninsula AT alvaroclemente impactofintensewintersaharandusteventsonpmandopticalpropertiesaturbansitesinthesoutheastoftheiberianpeninsula AT eduardoyubero impactofintensewintersaharandusteventsonpmandopticalpropertiesaturbansitesinthesoutheastoftheiberianpeninsula AT nuriagalindo impactofintensewintersaharandusteventsonpmandopticalpropertiesaturbansitesinthesoutheastoftheiberianpeninsula AT javiercrespo impactofintensewintersaharandusteventsonpmandopticalpropertiesaturbansitesinthesoutheastoftheiberianpeninsula AT josefrancisconicolas impactofintensewintersaharandusteventsonpmandopticalpropertiesaturbansitesinthesoutheastoftheiberianpeninsula |
| _version_ |
1718413006594899968 |