Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Over 20 years of observations in the boreal forest reveal a decreasing trend of atmospheric new particle formation

Li, Xinyang ; Li, Haiyan LU ; Yao, Lei ; Stolzenburg, Dominik ; Sarnela, Nina ; Vettikkat, Lejish ; de Jonge, Robin Wollesen LU ; Baalbaki, Rima ; Uusitalo, Helmi and Kontkanen, Jenni , et al. (2024) In Boreal Environment Research 29(1-6). p.35-52
Abstract

New particle formation (NPF) events substantially contribute to the number concentration of atmospheric particles and cloud condensation nuclei (CCN) which can further influence radiative balance and Earth's climate. Many short-term studies have found that sulfuric acid (H2 SO4) and highly oxygenated organic molecules (HOM) are critical compounds in the early steps of NPF. However, it is not fully understood how NPF intensity and frequency respond to global warming and declining anthropogenic sulfur dioxide (SO2) emissions, affecting HOM and H2 SO4 formation, respectively. Here, we report the results of long-term (over 20 years) datasets collected at the Station for Measuring... (More)

New particle formation (NPF) events substantially contribute to the number concentration of atmospheric particles and cloud condensation nuclei (CCN) which can further influence radiative balance and Earth's climate. Many short-term studies have found that sulfuric acid (H2 SO4) and highly oxygenated organic molecules (HOM) are critical compounds in the early steps of NPF. However, it is not fully understood how NPF intensity and frequency respond to global warming and declining anthropogenic sulfur dioxide (SO2) emissions, affecting HOM and H2 SO4 formation, respectively. Here, we report the results of long-term (over 20 years) datasets collected at the Station for Measuring Ecosystem-Atmosphere Relations (SMEAR) II (Hyytiälä, Finland). Owing to the significant contribution of HOM in the initial and subsequent particle formation and growth, we have derived a HOM proxy for conducting the long-term trend analysis. Measurement results together with modelled proxies reveal the declining trends of SO2, H2 SO4, Condensation Sink (CS), NPF frequency and particle formation rate (J3) along with increasing trends of monoterpenes and HOM.

(Less)
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; ; ; and , et al. (More)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; and (Less)
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Boreal Environment Research
volume
29
issue
1-6
pages
18 pages
publisher
Finnish Zoological and Botanical Publishing Board
external identifiers
  • scopus:85195556680
ISSN
1239-6095
language
English
LU publication?
yes
id
6ab9e86b-b238-4e70-9982-0d529c17bb9c
alternative location
https://www.borenv.net/BER/archive/pdfs/ber29/ber29-077-102.pdf
date added to LUP
2024-09-12 14:44:23
date last changed
2024-09-12 14:44:36
@article{6ab9e86b-b238-4e70-9982-0d529c17bb9c,
  abstract     = {{<p>New particle formation (NPF) events substantially contribute to the number concentration of atmospheric particles and cloud condensation nuclei (CCN) which can further influence radiative balance and Earth's climate. Many short-term studies have found that sulfuric acid (H<sub>2</sub> SO<sub>4</sub>) and highly oxygenated organic molecules (HOM) are critical compounds in the early steps of NPF. However, it is not fully understood how NPF intensity and frequency respond to global warming and declining anthropogenic sulfur dioxide (SO<sub>2</sub>) emissions, affecting HOM and H<sub>2</sub> SO<sub>4</sub> formation, respectively. Here, we report the results of long-term (over 20 years) datasets collected at the Station for Measuring Ecosystem-Atmosphere Relations (SMEAR) II (Hyytiälä, Finland). Owing to the significant contribution of HOM in the initial and subsequent particle formation and growth, we have derived a HOM proxy for conducting the long-term trend analysis. Measurement results together with modelled proxies reveal the declining trends of SO<sub>2</sub>, H<sub>2</sub> SO<sub>4</sub>, Condensation Sink (CS), NPF frequency and particle formation rate (J<sub>3</sub>) along with increasing trends of monoterpenes and HOM.</p>}},
  author       = {{Li, Xinyang and Li, Haiyan and Yao, Lei and Stolzenburg, Dominik and Sarnela, Nina and Vettikkat, Lejish and de Jonge, Robin Wollesen and Baalbaki, Rima and Uusitalo, Helmi and Kontkanen, Jenni and Lehtipalo, Katrianne and Daellenbach, Kaspar R. and Jokinen, Tuija and Aalto, Juho and Keronen, Petri and Schobesberger, Siegfried and Nieminen, Tuomo and Petäjä, Tuukka and Kerminen, Veli Matti and Bianchi, Federico and Kulmala, Markku and Dada, Lubna}},
  issn         = {{1239-6095}},
  language     = {{eng}},
  number       = {{1-6}},
  pages        = {{35--52}},
  publisher    = {{Finnish Zoological and Botanical Publishing Board}},
  series       = {{Boreal Environment Research}},
  title        = {{Over 20 years of observations in the boreal forest reveal a decreasing trend of atmospheric new particle formation}},
  url          = {{https://www.borenv.net/BER/archive/pdfs/ber29/ber29-077-102.pdf}},
  volume       = {{29}},
  year         = {{2024}},
}