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A modelling study o...
A modelling study of OH, NO3 and H2SO4 in 2007- 2018 at SMEAR II, Finland : Analysis of long-term trends
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- Chen, Dean (author)
- University of Helsinki
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- Xavier, Carlton (author)
- University of Helsinki
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- Clusius, Petri (author)
- University of Helsinki
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- Nieminen, Tuomo (author)
- University of Helsinki
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- Roldin, Pontus (author)
- Lund University,Lunds universitet,MERGE: ModElling the Regional and Global Earth system,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Centre for Environmental and Climate Science (CEC),Faculty of Science,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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- Qi, Ximeng (author)
- Nanjing University
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- Pichelstorfer, Lukas (author)
- University of Helsinki
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- Kulmala, Markku (author)
- Nanjing University,University of Helsinki
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- Rantala, Pekka (author)
- University of Helsinki
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- Aalto, Juho (author)
- University of Helsinki
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- Sarnela, Nina (author)
- University of Helsinki
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- Kolari, Pasi (author)
- University of Helsinki
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- Keronen, Petri (author)
- University of Helsinki
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- Rissanen, Matti P. (author)
- University of Tampere
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- Taipale, Ditte (author)
- University of Helsinki
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- Foreback, Benjamin (author)
- University of Helsinki
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- Baykara, Metin (author)
- Istanbul Technical University,University of Helsinki
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- Zhou, Putian (author)
- University of Helsinki
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- Boy, Michael (author)
- University of Helsinki
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(creator_code:org_t)
- 2021
- 2021
- English 24 s.
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In: Environmental Science: Atmospheres. - : Royal Society of Chemistry (RSC). - 2634-3606. ; 1:6, s. 449-472
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http://dx.doi.org/10... (free)
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https://pubs.rsc.org...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Major atmospheric oxidants (OH,O3 and NO3) dominate the atmospheric oxidation capacity, while H2SO4 is considered as a main driver for new particle formation. Although numerous studies have investigated the long-term trend of ozone in Europe, the trends of OH, NO3 and H2SO4 at specific sites are to a large extent unknown. The one-dimensional model SOSAA has been applied in several studies at the SMEAR II station and has been validated by measurements in several projects. Here, we applied the SOSAA model for the years 2007-2018 to simulate the atmospheric chemical components, especially the atmospheric oxidants OH and NO3, as well as H2SO4 at SMEAR II. The simulations were evaluated with observations from several shorter and longer campaigns at SMEAR II. Our results show that daily OH increased by 2.39% per year and NO3 decreased by 3.41% per year, with different trends of these oxidants during day and night. On the contrary, daytime sulfuric acid concentrations decreased by 2.78% per year, which correlated with the observed decreasing concentration of newly formed particles in the size range of 3- 25 nm with 1.4% per year at SMEAR II during the years 1997-2012. Additionally, we compared our simulated OH, NO3 and H2SO4 concentrations with proxies, which are commonly applied in case a limited number of parameters are measured and no detailed model simulations are available.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
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- art (subject category)
- ref (subject category)
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- By the author/editor
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Chen, Dean
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Xavier, Carlton
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Clusius, Petri
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Nieminen, Tuomo
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Roldin, Pontus
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Qi, Ximeng
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show more...
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Pichelstorfer, L ...
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Kulmala, Markku
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Rantala, Pekka
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Aalto, Juho
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Sarnela, Nina
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Kolari, Pasi
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Keronen, Petri
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Rissanen, Matti ...
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Taipale, Ditte
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Foreback, Benjam ...
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Baykara, Metin
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Zhou, Putian
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Boy, Michael
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Meteorology and ...
- Articles in the publication
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Environmental Sc ...
- By the university
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Lund University