Measurement report: Long-term measurements of aerosol precursor concentrations in the Finnish subarctic boreal forest
Aerosol particles form in the atmosphere via the clustering of certain atmospheric vapors. After growing into larger particles by the condensation of low-volatility gases, they can affect the Earth's climate by scattering light and acting as cloud condensation nuclei (CCN). Observations of low-...
Published in: | Atmospheric Chemistry and Physics |
---|---|
Main Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2022
|
Subjects: | |
Online Access: | https://doi.org/10.5194/acp-22-2237-2022 https://doaj.org/article/c30d3570351b483b94c2b72e2531cb34 |
id |
ftdoajarticles:oai:doaj.org/article:c30d3570351b483b94c2b72e2531cb34 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:c30d3570351b483b94c2b72e2531cb34 2023-05-15T15:01:54+02:00 Measurement report: Long-term measurements of aerosol precursor concentrations in the Finnish subarctic boreal forest T. Jokinen K. Lehtipalo R. C. Thakur I. Ylivinkka K. Neitola N. Sarnela T. Laitinen M. Kulmala T. Petäjä M. Sipilä 2022-02-01T00:00:00Z https://doi.org/10.5194/acp-22-2237-2022 https://doaj.org/article/c30d3570351b483b94c2b72e2531cb34 EN eng Copernicus Publications https://acp.copernicus.org/articles/22/2237/2022/acp-22-2237-2022.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-22-2237-2022 1680-7316 1680-7324 https://doaj.org/article/c30d3570351b483b94c2b72e2531cb34 Atmospheric Chemistry and Physics, Vol 22, Pp 2237-2254 (2022) Physics QC1-999 Chemistry QD1-999 article 2022 ftdoajarticles https://doi.org/10.5194/acp-22-2237-2022 2022-12-31T15:03:38Z Aerosol particles form in the atmosphere via the clustering of certain atmospheric vapors. After growing into larger particles by the condensation of low-volatility gases, they can affect the Earth's climate by scattering light and acting as cloud condensation nuclei (CCN). Observations of low-volatility aerosol precursor gases have been reported around the world, but longer-term measurement series and any Arctic data sets showing seasonal variation are close to nonexistent. Here, we present ∼7 months of aerosol precursor gas measurements performed with a nitrate-based chemical ionization atmospheric pressure interface time-of-flight (CI-APi-TOF) mass spectrometer. We deployed our measurements ∼150 km north of the Arctic Circle at the SMEAR I (Station for Measuring Ecosystem–Atmosphere Relations) continental Finnish subarctic field station, located in the Värriö strict nature reserve. We report concentration measurements of the most common compounds related to new particle formation (NPF): sulfuric acid (SA), methane sulfonic acid (MSA), iodic acid (IA) and the total concentration of highly oxygenated organic molecules (HOMs). At this remote measurement site, SA originates from both anthropogenic and biological sources and has a clear diurnal cycle but no significant seasonal variation. MSA shows a more distinct seasonal cycle, with concentrations peaking in the summer. Of the measured compounds, IA concentrations are the most stable throughout the measurement period, except in April during which time the concentration of IA is significantly higher than during the rest of the year. Otherwise, IA has almost identical daily maximum concentrations in spring, summer and autumn, and on NPF event or non-event days. HOMs are abundant during the summer months and low in the autumn months. Due to their low autumn concentrations and high correlation with ambient air temperature, we suggest that most HOMs are products of biogenic emissions, most probably monoterpene oxidation products. NPF events at SMEAR I happen under ... Article in Journal/Newspaper Arctic Subarctic Directory of Open Access Journals: DOAJ Articles Arctic Atmospheric Chemistry and Physics 22 4 2237 2254 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 T. Jokinen K. Lehtipalo R. C. Thakur I. Ylivinkka K. Neitola N. Sarnela T. Laitinen M. Kulmala T. Petäjä M. Sipilä Measurement report: Long-term measurements of aerosol precursor concentrations in the Finnish subarctic boreal forest |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Aerosol particles form in the atmosphere via the clustering of certain atmospheric vapors. After growing into larger particles by the condensation of low-volatility gases, they can affect the Earth's climate by scattering light and acting as cloud condensation nuclei (CCN). Observations of low-volatility aerosol precursor gases have been reported around the world, but longer-term measurement series and any Arctic data sets showing seasonal variation are close to nonexistent. Here, we present ∼7 months of aerosol precursor gas measurements performed with a nitrate-based chemical ionization atmospheric pressure interface time-of-flight (CI-APi-TOF) mass spectrometer. We deployed our measurements ∼150 km north of the Arctic Circle at the SMEAR I (Station for Measuring Ecosystem–Atmosphere Relations) continental Finnish subarctic field station, located in the Värriö strict nature reserve. We report concentration measurements of the most common compounds related to new particle formation (NPF): sulfuric acid (SA), methane sulfonic acid (MSA), iodic acid (IA) and the total concentration of highly oxygenated organic molecules (HOMs). At this remote measurement site, SA originates from both anthropogenic and biological sources and has a clear diurnal cycle but no significant seasonal variation. MSA shows a more distinct seasonal cycle, with concentrations peaking in the summer. Of the measured compounds, IA concentrations are the most stable throughout the measurement period, except in April during which time the concentration of IA is significantly higher than during the rest of the year. Otherwise, IA has almost identical daily maximum concentrations in spring, summer and autumn, and on NPF event or non-event days. HOMs are abundant during the summer months and low in the autumn months. Due to their low autumn concentrations and high correlation with ambient air temperature, we suggest that most HOMs are products of biogenic emissions, most probably monoterpene oxidation products. NPF events at SMEAR I happen under ... |
format |
Article in Journal/Newspaper |
author |
T. Jokinen K. Lehtipalo R. C. Thakur I. Ylivinkka K. Neitola N. Sarnela T. Laitinen M. Kulmala T. Petäjä M. Sipilä |
author_facet |
T. Jokinen K. Lehtipalo R. C. Thakur I. Ylivinkka K. Neitola N. Sarnela T. Laitinen M. Kulmala T. Petäjä M. Sipilä |
author_sort |
T. Jokinen |
title |
Measurement report: Long-term measurements of aerosol precursor concentrations in the Finnish subarctic boreal forest |
title_short |
Measurement report: Long-term measurements of aerosol precursor concentrations in the Finnish subarctic boreal forest |
title_full |
Measurement report: Long-term measurements of aerosol precursor concentrations in the Finnish subarctic boreal forest |
title_fullStr |
Measurement report: Long-term measurements of aerosol precursor concentrations in the Finnish subarctic boreal forest |
title_full_unstemmed |
Measurement report: Long-term measurements of aerosol precursor concentrations in the Finnish subarctic boreal forest |
title_sort |
measurement report: long-term measurements of aerosol precursor concentrations in the finnish subarctic boreal forest |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/acp-22-2237-2022 https://doaj.org/article/c30d3570351b483b94c2b72e2531cb34 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Subarctic |
genre_facet |
Arctic Subarctic |
op_source |
Atmospheric Chemistry and Physics, Vol 22, Pp 2237-2254 (2022) |
op_relation |
https://acp.copernicus.org/articles/22/2237/2022/acp-22-2237-2022.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-22-2237-2022 1680-7316 1680-7324 https://doaj.org/article/c30d3570351b483b94c2b72e2531cb34 |
op_doi |
https://doi.org/10.5194/acp-22-2237-2022 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
22 |
container_issue |
4 |
container_start_page |
2237 |
op_container_end_page |
2254 |
_version_ |
1766333911723409408 |