The role of highly oxygenated organic molecules in the Boreal aerosol-cloud-climate system

Pontus Roldin; Mikael Ehn; Theo Kurten; Tinja Olenius; Matti P. Rissanen; Nina Sarnela; Jonas Elm; Pekka Rantala; Liqing Hao; Noora Hyttinen; Liine Heikkinen; Douglas Worsnop; Lukas Pichelstorfer; Carlton Xavier; Petri  Clusius; Emilie Öström; Tuukka Petäjä; Markku Kulmala; Hanna Vehkamäki; Annele Virtanen; Ilona Riipinen; Michael Boy

doi:10.1038/s41467-019-12338-8

The role of highly oxygenated organic molecules in the Boreal aerosol-cloud-climate system

Pontus Roldin, Mikael Ehn, Theo Kurten, Tinja Olenius, Matti P. Rissanen, Nina Sarnela, Jonas Elm, Pekka Rantala, Liqing Hao, Noora Hyttinen, Liine Heikkinen, Douglas Worsnop, Lukas Pichelstorfer, Carlton Xavier, Petri Clusius, Emilie Öström, Tuukka Petäjä, Markku Kulmala, Hanna Vehkamäki, Annele VirtanenIlona Riipinen, Michael Boy

Research output: Contribution to journal › Article › Scientific › peer-review

Abstract

Over Boreal regions, monoterpenes emitted from the forest are the main precursors for secondary organic aerosol (SOA) formation and the primary driver of the growth of new aerosol particles to climatically important cloud condensation nuclei (CCN). Autoxidation of monoterpenes leads to rapid formation of Highly Oxygenated organic Molecules (HOM). We have developed the first model with near-explicit representation of atmospheric new particle formation (NPF) and HOM formation. The model can reproduce the observed NPF, HOM gas-phase composition and SOA formation over the Boreal forest. During the spring, HOM SOA formation increases the CCN concentration by similar to 10 % and causes a direct aerosol radiative forcing of -0.10 W/m(2). In contrast, NPF reduces the number of CCN at updraft velocities <0.2 m/s, and causes a direct aerosol radiative forcing of +0.15 W/m(2). Hence, while HOM SOA contributes to climate cooling, NPF can result in climate warming over the Boreal forest.

Original language	English
Article number	4370
Journal	Nature Communications
Volume	10
Number of pages	15
ISSN	2041-1723
DOIs	https://doi.org/10.1038/s41467-019-12338-8
Publication status	Published - 25 Sep 2019
MoE publication type	A1 Journal article-refereed

Fields of Science

ALPHA-PINENE
GAS
OXIDATION-PRODUCTS
OXIDIZED MULTIFUNCTIONAL COMPOUNDS
OZONOLYSIS
PARTICLE FORMATION
PEROXY-RADICALS
RO2 RADICALS
SATURATION VAPOR-PRESSURES
TROPOSPHERIC DEGRADATION
114 Physical sciences
116 Chemical sciences

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Cite this

Roldin, P., Ehn, M., Kurten, T., Olenius, T., Rissanen, M. P., Sarnela, N., ... Boy, M. (2019). The role of highly oxygenated organic molecules in the Boreal aerosol-cloud-climate system. Nature Communications, 10, [4370]. https://doi.org/10.1038/s41467-019-12338-8

Roldin, Pontus ; Ehn, Mikael ; Kurten, Theo ; Olenius, Tinja ; Rissanen, Matti P. ; Sarnela, Nina ; Elm, Jonas ; Rantala, Pekka ; Hao, Liqing ; Hyttinen, Noora ; Heikkinen, Liine ; Worsnop, Douglas ; Pichelstorfer, Lukas ; Xavier, Carlton ; Clusius, Petri ; Öström, Emilie ; Petäjä, Tuukka ; Kulmala, Markku ; Vehkamäki, Hanna ; Virtanen, Annele ; Riipinen, Ilona ; Boy, Michael. / The role of highly oxygenated organic molecules in the Boreal aerosol-cloud-climate system. In: Nature Communications. 2019 ; Vol. 10.

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title = "The role of highly oxygenated organic molecules in the Boreal aerosol-cloud-climate system",

abstract = "Over Boreal regions, monoterpenes emitted from the forest are the main precursors for secondary organic aerosol (SOA) formation and the primary driver of the growth of new aerosol particles to climatically important cloud condensation nuclei (CCN). Autoxidation of monoterpenes leads to rapid formation of Highly Oxygenated organic Molecules (HOM). We have developed the first model with near-explicit representation of atmospheric new particle formation (NPF) and HOM formation. The model can reproduce the observed NPF, HOM gas-phase composition and SOA formation over the Boreal forest. During the spring, HOM SOA formation increases the CCN concentration by similar to 10 {\%} and causes a direct aerosol radiative forcing of -0.10 W/m(2). In contrast, NPF reduces the number of CCN at updraft velocities <0.2 m/s, and causes a direct aerosol radiative forcing of +0.15 W/m(2). Hence, while HOM SOA contributes to climate cooling, NPF can result in climate warming over the Boreal forest.",

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Roldin, P, Ehn, M , Kurten, T, Olenius, T, Rissanen, MP, Sarnela, N, Elm, J, Rantala, P, Hao, L, Hyttinen, N, Heikkinen, L , Worsnop, D, Pichelstorfer, L, Xavier, C, Clusius, P, Öström, E, Petäjä, T , Kulmala, M , Vehkamäki, H, Virtanen, A, Riipinen, I & Boy, M 2019, 'The role of highly oxygenated organic molecules in the Boreal aerosol-cloud-climate system', Nature Communications, vol. 10, 4370. https://doi.org/10.1038/s41467-019-12338-8

The role of highly oxygenated organic molecules in the Boreal aerosol-cloud-climate system. / Roldin, Pontus; Ehn, Mikael ; Kurten, Theo; Olenius, Tinja; Rissanen, Matti P.; Sarnela, Nina; Elm, Jonas; Rantala, Pekka; Hao, Liqing; Hyttinen, Noora; Heikkinen, Liine ; Worsnop, Douglas; Pichelstorfer, Lukas; Xavier, Carlton; Clusius, Petri ; Öström, Emilie; Petäjä, Tuukka ; Kulmala, Markku ; Vehkamäki, Hanna; Virtanen, Annele; Riipinen, Ilona; Boy, Michael.

In: Nature Communications, Vol. 10, 4370, 25.09.2019.

Research output: Contribution to journal › Article › Scientific › peer-review

TY - JOUR

T1 - The role of highly oxygenated organic molecules in the Boreal aerosol-cloud-climate system

AU - Roldin, Pontus

AU - Ehn, Mikael

AU - Kurten, Theo

AU - Olenius, Tinja

AU - Rissanen, Matti P.

AU - Sarnela, Nina

AU - Elm, Jonas

AU - Rantala, Pekka

AU - Hao, Liqing

AU - Hyttinen, Noora

AU - Heikkinen, Liine

AU - Worsnop, Douglas

AU - Pichelstorfer, Lukas

AU - Xavier, Carlton

AU - Clusius, Petri

AU - Öström, Emilie

AU - Petäjä, Tuukka

AU - Kulmala, Markku

AU - Vehkamäki, Hanna

AU - Virtanen, Annele

AU - Riipinen, Ilona

AU - Boy, Michael

PY - 2019/9/25

Y1 - 2019/9/25

N2 - Over Boreal regions, monoterpenes emitted from the forest are the main precursors for secondary organic aerosol (SOA) formation and the primary driver of the growth of new aerosol particles to climatically important cloud condensation nuclei (CCN). Autoxidation of monoterpenes leads to rapid formation of Highly Oxygenated organic Molecules (HOM). We have developed the first model with near-explicit representation of atmospheric new particle formation (NPF) and HOM formation. The model can reproduce the observed NPF, HOM gas-phase composition and SOA formation over the Boreal forest. During the spring, HOM SOA formation increases the CCN concentration by similar to 10 % and causes a direct aerosol radiative forcing of -0.10 W/m(2). In contrast, NPF reduces the number of CCN at updraft velocities <0.2 m/s, and causes a direct aerosol radiative forcing of +0.15 W/m(2). Hence, while HOM SOA contributes to climate cooling, NPF can result in climate warming over the Boreal forest.

AB - Over Boreal regions, monoterpenes emitted from the forest are the main precursors for secondary organic aerosol (SOA) formation and the primary driver of the growth of new aerosol particles to climatically important cloud condensation nuclei (CCN). Autoxidation of monoterpenes leads to rapid formation of Highly Oxygenated organic Molecules (HOM). We have developed the first model with near-explicit representation of atmospheric new particle formation (NPF) and HOM formation. The model can reproduce the observed NPF, HOM gas-phase composition and SOA formation over the Boreal forest. During the spring, HOM SOA formation increases the CCN concentration by similar to 10 % and causes a direct aerosol radiative forcing of -0.10 W/m(2). In contrast, NPF reduces the number of CCN at updraft velocities <0.2 m/s, and causes a direct aerosol radiative forcing of +0.15 W/m(2). Hence, while HOM SOA contributes to climate cooling, NPF can result in climate warming over the Boreal forest.

KW - ALPHA-PINENE

KW - GAS

KW - OXIDATION-PRODUCTS

KW - OXIDIZED MULTIFUNCTIONAL COMPOUNDS

KW - OZONOLYSIS

KW - PARTICLE FORMATION

KW - PEROXY-RADICALS

KW - RO2 RADICALS

KW - SATURATION VAPOR-PRESSURES

KW - TROPOSPHERIC DEGRADATION

KW - 114 Physical sciences

KW - 116 Chemical sciences

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DO - 10.1038/s41467-019-12338-8

M3 - Article

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JO - Nature Communications

JF - Nature Communications

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