Advanced

Examination of laboratory-generated coated soot particles: An overview of the LACIS Experiment in November (LExNo) campaign

Stratmann, F.; Bilde, M.; Dusek, U.; Frank, Göran LU ; Hennig, T.; Henning, S.; Kiendler-Scharr, A.; Kiselev, A.; Kristensson, A. and Lieberwirth, I., et al. (2010) In Journal of Geophysical Research 115. p.11203-11203
Abstract
In the suite of laboratory measurements described here and in companion articles we deal with the hygroscopic growth and activation behavior of coated soot particles synthesized to mimic those of an atmospheric aerosol originating from biomass combustion. The investigations were performed during the measurement campaign LACIS Experiment in November (LExNo) which took place at the Leipzig Aerosol Cloud Interaction Simulator (LACIS). The specific goals of this campaign were (1) to perform a critical supersaturation measurement intercomparison using data sets from three different cloud condensation nucleus (CCN) instruments (two static thermal gradient type, one stream-wise thermal gradient type) and LACIS, (2) to examine particle hygroscopic... (More)
In the suite of laboratory measurements described here and in companion articles we deal with the hygroscopic growth and activation behavior of coated soot particles synthesized to mimic those of an atmospheric aerosol originating from biomass combustion. The investigations were performed during the measurement campaign LACIS Experiment in November (LExNo) which took place at the Leipzig Aerosol Cloud Interaction Simulator (LACIS). The specific goals of this campaign were (1) to perform a critical supersaturation measurement intercomparison using data sets from three different cloud condensation nucleus (CCN) instruments (two static thermal gradient type, one stream-wise thermal gradient type) and LACIS, (2) to examine particle hygroscopic growth (hydrated particle size as function of relative humidity) for particle characteristics such as aerosol mass spectrometer (AMS) measured soluble mass and particle morphology, and (3) to relate critical supersaturations derived from both measurements of soluble mass and high humidity tandem differential mobility analyzer (HH-TDMA) determined growth factors to critical supersaturations measured by means of the CCN instruments. This paper provides information on the particle synthesis techniques used during LExNo, an overview concerning the particle characterization measurements performed, and, by proving relations between measured composition, hygroscopic growth, and activation data, lay the foundations for the detailed investigations described in the companion studies. In the context of the present paper, excellent agreement of the critical supersaturations measured with three different CCN instruments and LACIS was observed. Furthermore, clear relations between coating masses determined with AMS and both hygroscopic growth factors at 98% RH and measured critical supersaturations could be seen. Also, a strong correlation between measured hygroscopic growth (growth factors at 98%) and measured critical supersaturation for all of the differently coated soot particles (coating substances being levoglucosan and/or ammonium (hydrogen) sulfate) was found. This is clearly indicative of the possibility of predicting the critical supersaturation of coated soot particles based on hygroscopic growth measurements using Kohler theory. (Less)
Please use this url to cite or link to this publication:
author
, et al. (More)
(Less)
publishing date
type
Contribution to journal
publication status
published
subject
keywords
SIZE, EMISSIONS, AEROSOL MASS-SPECTROMETER, BIOMASS BURNING PARTICLES, DECOMPOSITION, THERMAL, AMMONIUM-SULFATE, LEVOGLUCOSAN, CCN ACTIVATION, SUPERSATURATION, CALIBRATION
in
Journal of Geophysical Research
volume
115
pages
11203 - 11203
publisher
American Geophysical Union
external identifiers
  • scopus:77953754747
ISSN
2156-2202
DOI
10.1029/2009JD012628
project
MERGE
language
English
LU publication?
no
id
a07938d2-b049-4bff-be3a-d723ea6c77bc (old id 1671496)
date added to LUP
2010-09-17 09:39:39
date last changed
2018-05-29 09:40:46
@article{a07938d2-b049-4bff-be3a-d723ea6c77bc,
  abstract     = {In the suite of laboratory measurements described here and in companion articles we deal with the hygroscopic growth and activation behavior of coated soot particles synthesized to mimic those of an atmospheric aerosol originating from biomass combustion. The investigations were performed during the measurement campaign LACIS Experiment in November (LExNo) which took place at the Leipzig Aerosol Cloud Interaction Simulator (LACIS). The specific goals of this campaign were (1) to perform a critical supersaturation measurement intercomparison using data sets from three different cloud condensation nucleus (CCN) instruments (two static thermal gradient type, one stream-wise thermal gradient type) and LACIS, (2) to examine particle hygroscopic growth (hydrated particle size as function of relative humidity) for particle characteristics such as aerosol mass spectrometer (AMS) measured soluble mass and particle morphology, and (3) to relate critical supersaturations derived from both measurements of soluble mass and high humidity tandem differential mobility analyzer (HH-TDMA) determined growth factors to critical supersaturations measured by means of the CCN instruments. This paper provides information on the particle synthesis techniques used during LExNo, an overview concerning the particle characterization measurements performed, and, by proving relations between measured composition, hygroscopic growth, and activation data, lay the foundations for the detailed investigations described in the companion studies. In the context of the present paper, excellent agreement of the critical supersaturations measured with three different CCN instruments and LACIS was observed. Furthermore, clear relations between coating masses determined with AMS and both hygroscopic growth factors at 98% RH and measured critical supersaturations could be seen. Also, a strong correlation between measured hygroscopic growth (growth factors at 98%) and measured critical supersaturation for all of the differently coated soot particles (coating substances being levoglucosan and/or ammonium (hydrogen) sulfate) was found. This is clearly indicative of the possibility of predicting the critical supersaturation of coated soot particles based on hygroscopic growth measurements using Kohler theory.},
  author       = {Stratmann, F. and Bilde, M. and Dusek, U. and Frank, Göran and Hennig, T. and Henning, S. and Kiendler-Scharr, A. and Kiselev, A. and Kristensson, A. and Lieberwirth, I. and Mentel, T. F. and Poschl, U. and Rose, D. and Schneider, J. and Snider, J. R. and Tillmann, R. and Walter, S. and Wex, H.},
  issn         = {2156-2202},
  keyword      = {SIZE,EMISSIONS,AEROSOL MASS-SPECTROMETER,BIOMASS BURNING PARTICLES,DECOMPOSITION,THERMAL,AMMONIUM-SULFATE,LEVOGLUCOSAN,CCN ACTIVATION,SUPERSATURATION,CALIBRATION},
  language     = {eng},
  pages        = {11203--11203},
  publisher    = {American Geophysical Union},
  series       = {Journal of Geophysical Research},
  title        = {Examination of laboratory-generated coated soot particles: An overview of the LACIS Experiment in November (LExNo) campaign},
  url          = {http://dx.doi.org/10.1029/2009JD012628},
  volume       = {115},
  year         = {2010},
}