Estimation of hygroscopic growth properties of source-related sub-micrometre particle types in a mixed urban aerosol

Abstract Knowledge of hygroscopic properties is essential to prediction of the role of aerosol in cloud formation and lung deposition. Our objective was to introduce a new approach to classify and predict the hygroscopic growth factors (Gfs) of specific atmospheric sub-micrometre particle types in a...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Tuan V. Vu, Zongbo Shi, Roy M. Harrison
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Environmental sciences GE1-350 Meteorology. Climatology QC851-999
Acceso en línea:	https://doaj.org/article/1c6ec93f569642e09a30647246d8d640
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:1c6ec93f569642e09a30647246d8d640
record_format	dspace
spelling	oai:doaj.org-article:1c6ec93f569642e09a30647246d8d6402021-12-02T13:24:00ZEstimation of hygroscopic growth properties of source-related sub-micrometre particle types in a mixed urban aerosol10.1038/s41612-021-00175-w2397-3722https://doaj.org/article/1c6ec93f569642e09a30647246d8d6402021-03-01T00:00:00Zhttps://doi.org/10.1038/s41612-021-00175-whttps://doaj.org/toc/2397-3722Abstract Knowledge of hygroscopic properties is essential to prediction of the role of aerosol in cloud formation and lung deposition. Our objective was to introduce a new approach to classify and predict the hygroscopic growth factors (Gfs) of specific atmospheric sub-micrometre particle types in a mixed aerosol based on measurements of the ensemble hygroscopic growth factors and particle number size distribution (PNSD). Based on a non-linear regression model between aerosol source contributions from PMF applied to the PNSD data set and the measured Gf values (at 90% relative humidity) of ambient aerosols, the estimated mean Gf values for secondary inorganic, mixed secondary, nucleation, urban background, fresh, and aged traffic-generated particle classes at a diameter of 110 nm were found to be 1.51, 1.34, 1.12, 1.33, 1.09 and 1.10, respectively. It is found possible to impute (fill) missing HTDMA data sets using a Random Forest regression on PNSD and meteorological conditions.Tuan V. VuZongbo ShiRoy M. HarrisonNature PortfolioarticleEnvironmental sciencesGE1-350Meteorology. ClimatologyQC851-999ENnpj Climate and Atmospheric Science, Vol 4, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Environmental sciences GE1-350 Meteorology. Climatology QC851-999
spellingShingle	Environmental sciences GE1-350 Meteorology. Climatology QC851-999 Tuan V. Vu Zongbo Shi Roy M. Harrison Estimation of hygroscopic growth properties of source-related sub-micrometre particle types in a mixed urban aerosol
description	Abstract Knowledge of hygroscopic properties is essential to prediction of the role of aerosol in cloud formation and lung deposition. Our objective was to introduce a new approach to classify and predict the hygroscopic growth factors (Gfs) of specific atmospheric sub-micrometre particle types in a mixed aerosol based on measurements of the ensemble hygroscopic growth factors and particle number size distribution (PNSD). Based on a non-linear regression model between aerosol source contributions from PMF applied to the PNSD data set and the measured Gf values (at 90% relative humidity) of ambient aerosols, the estimated mean Gf values for secondary inorganic, mixed secondary, nucleation, urban background, fresh, and aged traffic-generated particle classes at a diameter of 110 nm were found to be 1.51, 1.34, 1.12, 1.33, 1.09 and 1.10, respectively. It is found possible to impute (fill) missing HTDMA data sets using a Random Forest regression on PNSD and meteorological conditions.
format	article
author	Tuan V. Vu Zongbo Shi Roy M. Harrison
author_facet	Tuan V. Vu Zongbo Shi Roy M. Harrison
author_sort	Tuan V. Vu
title	Estimation of hygroscopic growth properties of source-related sub-micrometre particle types in a mixed urban aerosol
title_short	Estimation of hygroscopic growth properties of source-related sub-micrometre particle types in a mixed urban aerosol
title_full	Estimation of hygroscopic growth properties of source-related sub-micrometre particle types in a mixed urban aerosol
title_fullStr	Estimation of hygroscopic growth properties of source-related sub-micrometre particle types in a mixed urban aerosol
title_full_unstemmed	Estimation of hygroscopic growth properties of source-related sub-micrometre particle types in a mixed urban aerosol
title_sort	estimation of hygroscopic growth properties of source-related sub-micrometre particle types in a mixed urban aerosol
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/1c6ec93f569642e09a30647246d8d640
work_keys_str_mv	AT tuanvvu estimationofhygroscopicgrowthpropertiesofsourcerelatedsubmicrometreparticletypesinamixedurbanaerosol AT zongboshi estimationofhygroscopicgrowthpropertiesofsourcerelatedsubmicrometreparticletypesinamixedurbanaerosol AT roymharrison estimationofhygroscopicgrowthpropertiesofsourcerelatedsubmicrometreparticletypesinamixedurbanaerosol
_version_	1718393135362473984

Estimation of hygroscopic growth properties of source-related sub-micrometre particle types in a mixed urban aerosol

Ejemplares similares