Aerosol ageing in an urban plume - implication for climate
Roldin, Pontus LU ; Swietlicki, Erik LU
; Massling, A.
; Kristensson, Adam
LU
; Löndahl, Jakob
LU
; Eriksson, Axel
LU
; Pagels, Joakim
LU
and Gustafsson, S.
(2011)
In Atmospheric Chemistry and Physics
11(12).
p.5897-5915
- Abstract
- The climate effects downwind of an urban area resulting from gaseous and particulate emissions within the city are as yet inadequately quantified. The aim of this work was to estimate these effects for Malmo city in southern Sweden (population 280 000). The chemical and physical particle properties were simulated with a model for Aerosol Dynamics, gas phase CHEMistry and radiative transfer calculations (ADCHEM) following the trajectory movement from upwind of Malmo, through the urban background environment and finally tens and hundreds of kilometers downwind of Malmo. The model results were evaluated using measurements of the particle number size distribution and chemical composition. The total particle number concentration 50 km (similar... (More)
- The climate effects downwind of an urban area resulting from gaseous and particulate emissions within the city are as yet inadequately quantified. The aim of this work was to estimate these effects for Malmo city in southern Sweden (population 280 000). The chemical and physical particle properties were simulated with a model for Aerosol Dynamics, gas phase CHEMistry and radiative transfer calculations (ADCHEM) following the trajectory movement from upwind of Malmo, through the urban background environment and finally tens and hundreds of kilometers downwind of Malmo. The model results were evaluated using measurements of the particle number size distribution and chemical composition. The total particle number concentration 50 km (similar to 3 h) downwind, in the center of the Malmo plume, is about 3700 cm(-3) of which the Malmo contribution is roughly 30%. Condensation of nitric acid, ammonium and to a smaller extent oxidized organic compounds formed from the emissions in Malmo increases the secondary aerosol formation with a maximum of 0.7-0.8 mu gm(-3) 6 to 18 h downwind of Malmo. The secondary mass contribution dominates over the primary soot contribution from Malmo already 3 to 4 h downwind of the emission sources and contributes to an enhanced total surface direct or indirect aerosol shortwave radiative forcing in the center of the urban plume ranging from -0.3 to -3.3 Wm(-2) depending on the distance from Malmo, and the specific cloud properties. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2049325
- author
- Roldin, Pontus
LU
; Swietlicki, Erik
LU
; Massling, A.
; Kristensson, Adam
LU
; Löndahl, Jakob
LU
; Eriksson, Axel
LU
; Pagels, Joakim
LU
and Gustafsson, S.
- organization
- publishing date
- 2011
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Atmospheric Chemistry and Physics
- volume
- 11
- issue
- 12
- pages
- 5897 - 5915
- publisher
- Copernicus GmbH
- external identifiers
-
- wos:000291939800021
- scopus:79959956309
- ISSN
- 1680-7324
- DOI
- 10.5194/acp-11-5897-2011
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Ergonomics and Aerosol Technology (011025002), Nuclear Physics (Faculty of Technology) (011013007)
- id
- b6b2acd5-194a-4612-80d0-9eac49af2520 (old id 2049325)
- date added to LUP
- 2016-04-01 10:54:42
- date last changed
- 2022-01-26 03:40:20
@article{b6b2acd5-194a-4612-80d0-9eac49af2520,
abstract = {{The climate effects downwind of an urban area resulting from gaseous and particulate emissions within the city are as yet inadequately quantified. The aim of this work was to estimate these effects for Malmo city in southern Sweden (population 280 000). The chemical and physical particle properties were simulated with a model for Aerosol Dynamics, gas phase CHEMistry and radiative transfer calculations (ADCHEM) following the trajectory movement from upwind of Malmo, through the urban background environment and finally tens and hundreds of kilometers downwind of Malmo. The model results were evaluated using measurements of the particle number size distribution and chemical composition. The total particle number concentration 50 km (similar to 3 h) downwind, in the center of the Malmo plume, is about 3700 cm(-3) of which the Malmo contribution is roughly 30%. Condensation of nitric acid, ammonium and to a smaller extent oxidized organic compounds formed from the emissions in Malmo increases the secondary aerosol formation with a maximum of 0.7-0.8 mu gm(-3) 6 to 18 h downwind of Malmo. The secondary mass contribution dominates over the primary soot contribution from Malmo already 3 to 4 h downwind of the emission sources and contributes to an enhanced total surface direct or indirect aerosol shortwave radiative forcing in the center of the urban plume ranging from -0.3 to -3.3 Wm(-2) depending on the distance from Malmo, and the specific cloud properties.}},
author = {{Roldin, Pontus and Swietlicki, Erik and Massling, A. and Kristensson, Adam and Löndahl, Jakob and Eriksson, Axel and Pagels, Joakim and Gustafsson, S.}},
issn = {{1680-7324}},
language = {{eng}},
number = {{12}},
pages = {{5897--5915}},
publisher = {{Copernicus GmbH}},
series = {{Atmospheric Chemistry and Physics}},
title = {{Aerosol ageing in an urban plume - implication for climate}},
url = {{https://lup.lub.lu.se/search/files/2229813/5052403.pdf}},
doi = {{10.5194/acp-11-5897-2011}},
volume = {{11}},
year = {{2011}},
}