Particle concentration and flux dynamics in the atmospheric boundary layer as the indicator of formation mechanism

Johanna Lauros, Andrey Sogachev, Sampo Smolander, Henri Vuollekoski, Sanna-Liisa Sihto, Ivan Mammarella, Lauri Laakso, Ullar Rannik, Michael Boy

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Sammanfattning

We carried out column model simulations to study particle fluxes and deposition and to evaluate different particle formation mechanisms at a boreal forest site in Finland. We show that kinetic nucleation of sulphuric acid cannot be responsible for new particle formation alone as the simulated vertical profile of particle number concentration does not correspond to observations. Instead organic induced nucleation leads to good agreement confirming the relevance of the aerosol formation mechanism including organic compounds emitted by the biosphere.

The simulation of aerosol concentration within the atmospheric boundary layer during nucleation event days shows a highly dynamical picture, where particle formation is coupled with chemistry and turbulent transport. We have demonstrated the suitability of our turbulent mixing scheme in reproducing the most important characteristics of particle dynamics within the boundary layer. Deposition and particle flux simulations show that deposition affects noticeably only the smallest particles in the lowest part of the atmospheric boundary layer.
Originalspråkengelska
TidskriftAtmospheric Chemistry and Physics
Volym11
Sidor (från-till)5591-5601
Antal sidor11
ISSN1680-7316
DOI
StatusPublicerad - 16 jun 2011
MoE-publikationstypA1 Tidskriftsartikel-refererad

Vetenskapsgrenar

  • 114 Fysik

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Lauros, Johanna ; Sogachev, Andrey ; Smolander, Sampo ; Vuollekoski, Henri ; Sihto, Sanna-Liisa ; Mammarella, Ivan ; Laakso, Lauri ; Rannik, Ullar ; Boy, Michael. / Particle concentration and flux dynamics in the atmospheric boundary layer as the indicator of formation mechanism. I: Atmospheric Chemistry and Physics. 2011 ; Vol. 11. s. 5591-5601.
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title = "Particle concentration and flux dynamics in the atmospheric boundary layer as the indicator of formation mechanism",
abstract = "We carried out column model simulations to study particle fluxes and deposition and to evaluate different particle formation mechanisms at a boreal forest site in Finland. We show that kinetic nucleation of sulphuric acid cannot be responsible for new particle formation alone as the simulated vertical profile of particle number concentration does not correspond to observations. Instead organic induced nucleation leads to good agreement confirming the relevance of the aerosol formation mechanism including organic compounds emitted by the biosphere.The simulation of aerosol concentration within the atmospheric boundary layer during nucleation event days shows a highly dynamical picture, where particle formation is coupled with chemistry and turbulent transport. We have demonstrated the suitability of our turbulent mixing scheme in reproducing the most important characteristics of particle dynamics within the boundary layer. Deposition and particle flux simulations show that deposition affects noticeably only the smallest particles in the lowest part of the atmospheric boundary layer.",
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Particle concentration and flux dynamics in the atmospheric boundary layer as the indicator of formation mechanism. / Lauros, Johanna; Sogachev, Andrey; Smolander, Sampo; Vuollekoski, Henri; Sihto, Sanna-Liisa; Mammarella, Ivan; Laakso, Lauri; Rannik, Ullar; Boy, Michael.

I: Atmospheric Chemistry and Physics, Vol. 11, 16.06.2011, s. 5591-5601.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

TY - JOUR

T1 - Particle concentration and flux dynamics in the atmospheric boundary layer as the indicator of formation mechanism

AU - Lauros, Johanna

AU - Sogachev, Andrey

AU - Smolander, Sampo

AU - Vuollekoski, Henri

AU - Sihto, Sanna-Liisa

AU - Mammarella, Ivan

AU - Laakso, Lauri

AU - Rannik, Ullar

AU - Boy, Michael

PY - 2011/6/16

Y1 - 2011/6/16

N2 - We carried out column model simulations to study particle fluxes and deposition and to evaluate different particle formation mechanisms at a boreal forest site in Finland. We show that kinetic nucleation of sulphuric acid cannot be responsible for new particle formation alone as the simulated vertical profile of particle number concentration does not correspond to observations. Instead organic induced nucleation leads to good agreement confirming the relevance of the aerosol formation mechanism including organic compounds emitted by the biosphere.The simulation of aerosol concentration within the atmospheric boundary layer during nucleation event days shows a highly dynamical picture, where particle formation is coupled with chemistry and turbulent transport. We have demonstrated the suitability of our turbulent mixing scheme in reproducing the most important characteristics of particle dynamics within the boundary layer. Deposition and particle flux simulations show that deposition affects noticeably only the smallest particles in the lowest part of the atmospheric boundary layer.

AB - We carried out column model simulations to study particle fluxes and deposition and to evaluate different particle formation mechanisms at a boreal forest site in Finland. We show that kinetic nucleation of sulphuric acid cannot be responsible for new particle formation alone as the simulated vertical profile of particle number concentration does not correspond to observations. Instead organic induced nucleation leads to good agreement confirming the relevance of the aerosol formation mechanism including organic compounds emitted by the biosphere.The simulation of aerosol concentration within the atmospheric boundary layer during nucleation event days shows a highly dynamical picture, where particle formation is coupled with chemistry and turbulent transport. We have demonstrated the suitability of our turbulent mixing scheme in reproducing the most important characteristics of particle dynamics within the boundary layer. Deposition and particle flux simulations show that deposition affects noticeably only the smallest particles in the lowest part of the atmospheric boundary layer.

KW - 114 Physical sciences

U2 - 10.5194/acp-11-5591-2011

DO - 10.5194/acp-11-5591-2011

M3 - Article

VL - 11

SP - 5591

EP - 5601

JO - Atmospheric Chemistry and Physics

JF - Atmospheric Chemistry and Physics

SN - 1680-7316

ER -