Over 20 years of observations in the boreal forest reveal a decreasing trend of atmospheric new particle formation
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 (H2SO4) and highly oxyge...
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/578457 2024-09-15T18:00:08+00:00 Over 20 years of observations in the boreal forest reveal a decreasing trend of atmospheric new particle formation Li, Xinyang Li, Haiyan Yao, Lei Stolzenburg, Dominik Sarnela, Nina Vettikkat, Lejish de Jonge, Robin Wollesen Baalbaki, Rima Uusitalo, Helmi Kontkanen, Jenni Lehtipalo, Katrianne Daellenbach, Kaspar R. Jokinen, Tuija Aalto, Juho Keronen, Petri Schobesberger, Siegfried Nieminen, Tuomo Petäjä, Tuukka Kerminen, Veli-Matti Bianchi, Federico Kulmala, Markku Dada, Lubna 2024-06-27T13:45:08Z 35-52 application/pdf http://hdl.handle.net/10138/578457 eng eng Boreal Environment Research Publishing Board Boreal Environment Research 1239-6095 1797-2469 29 http://hdl.handle.net/10138/578457 Suomen ympäristökeskus CC BY 4.0 openAccess Artikkeli lehdessä 2024 ftunivhelsihelda 2024-08-21T23:48:04Z 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 (H2SO4) 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 H2SO4 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, H2SO4, Condensation Sink (CS), NPF frequency and particle formation rate (J3) along with increasing trends of monoterpenes and HOM. Article in Journal/Newspaper Boreal Environment Research HELDA – University of Helsinki Open Repository |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
description |
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 (H2SO4) 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 H2SO4 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, H2SO4, Condensation Sink (CS), NPF frequency and particle formation rate (J3) along with increasing trends of monoterpenes and HOM. |
format |
Article in Journal/Newspaper |
author |
Li, Xinyang Li, Haiyan Yao, Lei Stolzenburg, Dominik Sarnela, Nina Vettikkat, Lejish de Jonge, Robin Wollesen Baalbaki, Rima Uusitalo, Helmi Kontkanen, Jenni Lehtipalo, Katrianne Daellenbach, Kaspar R. Jokinen, Tuija Aalto, Juho Keronen, Petri Schobesberger, Siegfried Nieminen, Tuomo Petäjä, Tuukka Kerminen, Veli-Matti Bianchi, Federico Kulmala, Markku Dada, Lubna |
spellingShingle |
Li, Xinyang Li, Haiyan Yao, Lei Stolzenburg, Dominik Sarnela, Nina Vettikkat, Lejish de Jonge, Robin Wollesen Baalbaki, Rima Uusitalo, Helmi Kontkanen, Jenni Lehtipalo, Katrianne Daellenbach, Kaspar R. Jokinen, Tuija Aalto, Juho Keronen, Petri Schobesberger, Siegfried Nieminen, Tuomo Petäjä, Tuukka Kerminen, Veli-Matti Bianchi, Federico Kulmala, Markku Dada, Lubna Over 20 years of observations in the boreal forest reveal a decreasing trend of atmospheric new particle formation |
author_facet |
Li, Xinyang Li, Haiyan Yao, Lei Stolzenburg, Dominik Sarnela, Nina Vettikkat, Lejish de Jonge, Robin Wollesen Baalbaki, Rima Uusitalo, Helmi Kontkanen, Jenni Lehtipalo, Katrianne Daellenbach, Kaspar R. Jokinen, Tuija Aalto, Juho Keronen, Petri Schobesberger, Siegfried Nieminen, Tuomo Petäjä, Tuukka Kerminen, Veli-Matti Bianchi, Federico Kulmala, Markku Dada, Lubna |
author_sort |
Li, Xinyang |
title |
Over 20 years of observations in the boreal forest reveal a decreasing trend of atmospheric new particle formation |
title_short |
Over 20 years of observations in the boreal forest reveal a decreasing trend of atmospheric new particle formation |
title_full |
Over 20 years of observations in the boreal forest reveal a decreasing trend of atmospheric new particle formation |
title_fullStr |
Over 20 years of observations in the boreal forest reveal a decreasing trend of atmospheric new particle formation |
title_full_unstemmed |
Over 20 years of observations in the boreal forest reveal a decreasing trend of atmospheric new particle formation |
title_sort |
over 20 years of observations in the boreal forest reveal a decreasing trend of atmospheric new particle formation |
publisher |
Boreal Environment Research Publishing Board |
publishDate |
2024 |
url |
http://hdl.handle.net/10138/578457 |
genre |
Boreal Environment Research |
genre_facet |
Boreal Environment Research |
op_relation |
Boreal Environment Research 1239-6095 1797-2469 29 http://hdl.handle.net/10138/578457 Suomen ympäristökeskus |
op_rights |
CC BY 4.0 openAccess |
_version_ |
1810437249628635136 |