Implementation of the sectional aerosol module SALSA2.0 into the PALM model system 6.0: Model development and first evaluation

Mona Kurppa, Antti Hellsten, Pontus Roldin, Harri Kokkola, Juha Tonttila, Mikko Auvinen, Christoph W. Kent, Prashant Kumar, Björn Maronga, Leena Järvi

Tutkimustuotos: ArtikkelijulkaisuArtikkeliTieteellinenvertaisarvioitu

Kuvaus

Urban pedestrian-level air quality is a result of an interplay between turbulent dispersion conditions, background concentrations, and heterogeneous local emissions of air pollutants and their transformation processes. Still, the complexity of these interactions cannot be resolved by the commonly used air quality models. By embedding the sectional aerosol module SALSA2.0 into the large-eddy simulation model PALM, a novel, high-resolution, urban aerosol modelling framework has been developed. The first model evaluation study on the vertical variation of aerosol number concentration and size distribution in a simple street canyon without vegetation in Cambridge, UK, shows good agreement with measurements, with simulated values mainly within a factor of 2 of observations. Dispersion conditions and local emissions govern the pedestrian-level aerosol number concentrations. Out of different aerosol processes, dry deposition is shown to decrease the total number concentration by over 20 %, while condensation and dissolutional increase the total mass by over 10 %. Following the model development, the application of PALM can be extended to local-and neighbourhood-scale air pollution and aerosol studies that require a detailed solution of the ambient flow field.
Alkuperäiskielienglanti
LehtiGeoscientific Model Development
Vuosikerta12
Numero4
Sivut1403-1422
Sivumäärä20
ISSN1991-959X
DOI - pysyväislinkit
TilaJulkaistu - 11 huhtikuuta 2019
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä, vertaisarvioitu

Tieteenalat

  • 1172 Ympäristötiede
  • 114 Fysiikka

Lainaa tätä

Kurppa, Mona ; Hellsten, Antti ; Roldin, Pontus ; Kokkola, Harri ; Tonttila, Juha ; Auvinen, Mikko ; Kent, Christoph W. ; Kumar, Prashant ; Maronga, Björn ; Järvi, Leena. / Implementation of the sectional aerosol module SALSA2.0 into the PALM model system 6.0 : Model development and first evaluation. Julkaisussa: Geoscientific Model Development. 2019 ; Vuosikerta 12, Nro 4. Sivut 1403-1422.
@article{f110c1d6bf154a0e9bdf8ae6e9f9ca46,
title = "Implementation of the sectional aerosol module SALSA2.0 into the PALM model system 6.0: Model development and first evaluation",
abstract = "Urban pedestrian-level air quality is a result of an interplay between turbulent dispersion conditions, background concentrations, and heterogeneous local emissions of air pollutants and their transformation processes. Still, the complexity of these interactions cannot be resolved by the commonly used air quality models. By embedding the sectional aerosol module SALSA2.0 into the large-eddy simulation model PALM, a novel, high-resolution, urban aerosol modelling framework has been developed. The first model evaluation study on the vertical variation of aerosol number concentration and size distribution in a simple street canyon without vegetation in Cambridge, UK, shows good agreement with measurements, with simulated values mainly within a factor of 2 of observations. Dispersion conditions and local emissions govern the pedestrian-level aerosol number concentrations. Out of different aerosol processes, dry deposition is shown to decrease the total number concentration by over 20 {\%}, while condensation and dissolutional increase the total mass by over 10 {\%}. Following the model development, the application of PALM can be extended to local-and neighbourhood-scale air pollution and aerosol studies that require a detailed solution of the ambient flow field.",
keywords = "1172 Environmental sciences, 114 Physical sciences",
author = "Mona Kurppa and Antti Hellsten and Pontus Roldin and Harri Kokkola and Juha Tonttila and Mikko Auvinen and Kent, {Christoph W.} and Prashant Kumar and Bj{\"o}rn Maronga and Leena J{\"a}rvi",
year = "2019",
month = "4",
day = "11",
doi = "10.5194/gmd-12-1403-2019",
language = "English",
volume = "12",
pages = "1403--1422",
journal = "Geoscientific Model Development",
issn = "1991-959X",
publisher = "COPERNICUS GESELLSCHAFT MBH",
number = "4",

}

Implementation of the sectional aerosol module SALSA2.0 into the PALM model system 6.0 : Model development and first evaluation. / Kurppa, Mona; Hellsten, Antti; Roldin, Pontus; Kokkola, Harri; Tonttila, Juha; Auvinen, Mikko; Kent, Christoph W.; Kumar, Prashant; Maronga, Björn; Järvi, Leena.

julkaisussa: Geoscientific Model Development, Vuosikerta 12, Nro 4, 11.04.2019, s. 1403-1422.

Tutkimustuotos: ArtikkelijulkaisuArtikkeliTieteellinenvertaisarvioitu

TY - JOUR

T1 - Implementation of the sectional aerosol module SALSA2.0 into the PALM model system 6.0

T2 - Model development and first evaluation

AU - Kurppa, Mona

AU - Hellsten, Antti

AU - Roldin, Pontus

AU - Kokkola, Harri

AU - Tonttila, Juha

AU - Auvinen, Mikko

AU - Kent, Christoph W.

AU - Kumar, Prashant

AU - Maronga, Björn

AU - Järvi, Leena

PY - 2019/4/11

Y1 - 2019/4/11

N2 - Urban pedestrian-level air quality is a result of an interplay between turbulent dispersion conditions, background concentrations, and heterogeneous local emissions of air pollutants and their transformation processes. Still, the complexity of these interactions cannot be resolved by the commonly used air quality models. By embedding the sectional aerosol module SALSA2.0 into the large-eddy simulation model PALM, a novel, high-resolution, urban aerosol modelling framework has been developed. The first model evaluation study on the vertical variation of aerosol number concentration and size distribution in a simple street canyon without vegetation in Cambridge, UK, shows good agreement with measurements, with simulated values mainly within a factor of 2 of observations. Dispersion conditions and local emissions govern the pedestrian-level aerosol number concentrations. Out of different aerosol processes, dry deposition is shown to decrease the total number concentration by over 20 %, while condensation and dissolutional increase the total mass by over 10 %. Following the model development, the application of PALM can be extended to local-and neighbourhood-scale air pollution and aerosol studies that require a detailed solution of the ambient flow field.

AB - Urban pedestrian-level air quality is a result of an interplay between turbulent dispersion conditions, background concentrations, and heterogeneous local emissions of air pollutants and their transformation processes. Still, the complexity of these interactions cannot be resolved by the commonly used air quality models. By embedding the sectional aerosol module SALSA2.0 into the large-eddy simulation model PALM, a novel, high-resolution, urban aerosol modelling framework has been developed. The first model evaluation study on the vertical variation of aerosol number concentration and size distribution in a simple street canyon without vegetation in Cambridge, UK, shows good agreement with measurements, with simulated values mainly within a factor of 2 of observations. Dispersion conditions and local emissions govern the pedestrian-level aerosol number concentrations. Out of different aerosol processes, dry deposition is shown to decrease the total number concentration by over 20 %, while condensation and dissolutional increase the total mass by over 10 %. Following the model development, the application of PALM can be extended to local-and neighbourhood-scale air pollution and aerosol studies that require a detailed solution of the ambient flow field.

KW - 1172 Environmental sciences

KW - 114 Physical sciences

U2 - 10.5194/gmd-12-1403-2019

DO - 10.5194/gmd-12-1403-2019

M3 - Article

VL - 12

SP - 1403

EP - 1422

JO - Geoscientific Model Development

JF - Geoscientific Model Development

SN - 1991-959X

IS - 4

ER -