Marine and terrestrial influences on ice nucleating particles during continuous springtime measurements in an Arctic oilfield location
Aerosols that serve as ice nucleating particles (INPs) have the potential to modulate cloud microphysical properties and can therefore impact cloud radiative forcing (CRF) and precipitation formation processes. In remote regions such as the Arctic, aerosol–cloud interactions are severely understudie...
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ftdoajarticles:oai:doaj.org/article:d7b3fc0d5f91419c972ff4bdf63e8a1e 2023-05-15T14:38:47+02:00 Marine and terrestrial influences on ice nucleating particles during continuous springtime measurements in an Arctic oilfield location J. M. Creamean R. M. Kirpes K. A. Pratt N. J. Spada M. Maahn G. de Boer R. C. Schnell S. China 2018-12-01T00:00:00Z https://doi.org/10.5194/acp-18-18023-2018 https://doaj.org/article/d7b3fc0d5f91419c972ff4bdf63e8a1e EN eng Copernicus Publications https://www.atmos-chem-phys.net/18/18023/2018/acp-18-18023-2018.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-18-18023-2018 1680-7316 1680-7324 https://doaj.org/article/d7b3fc0d5f91419c972ff4bdf63e8a1e Atmospheric Chemistry and Physics, Vol 18, Pp 18023-18042 (2018) Physics QC1-999 Chemistry QD1-999 article 2018 ftdoajarticles https://doi.org/10.5194/acp-18-18023-2018 2022-12-31T14:09:09Z Aerosols that serve as ice nucleating particles (INPs) have the potential to modulate cloud microphysical properties and can therefore impact cloud radiative forcing (CRF) and precipitation formation processes. In remote regions such as the Arctic, aerosol–cloud interactions are severely understudied yet may have significant implications for the surface energy budget and its impact on sea ice and snow surfaces. Further, uncertainties in model representations of heterogeneous ice nucleation are a significant hindrance to simulating Arctic mixed-phase cloud processes. We present results from a campaign called INPOP (Ice Nucleating Particles at Oliktok Point), which took place at a US Department of Energy Atmospheric Radiation Measurement (DOE ARM) facility in the northern Alaskan Arctic. Three time- and size-resolved aerosol impactors were deployed from 1 March to 31 May 2017 for offline ice nucleation and chemical analyses and were co-located with routine measurements of aerosol number and size. The largest particles (i.e., ≥ 3 µ m or “coarse mode”) were the most efficient INPs by inducing freezing at the warmest temperatures. During periods with snow- and ice-covered surfaces, coarse mode INP concentrations were very low (maximum of 6 × 10 −4 L −1 at − 15 ∘ C), but higher concentrations of warm-temperature INPs were observed during late May (maximum of 2 × 10 −2 L −1 at − 15 ∘ C). These higher concentrations were attributed to air masses originating from over open Arctic Ocean water and tundra surfaces. To our knowledge, these results represent the first INP characterization measurements in an Arctic oilfield location and demonstrate strong influences from mineral and marine sources despite the relatively high springtime pollution levels. Ultimately, these results can be used to evaluate the anthropogenic and natural influences on aerosol composition and Arctic cloud properties. Article in Journal/Newspaper Arctic Arctic Ocean Sea ice Tundra Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Atmospheric Chemistry and Physics 18 24 18023 18042 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 J. M. Creamean R. M. Kirpes K. A. Pratt N. J. Spada M. Maahn G. de Boer R. C. Schnell S. China Marine and terrestrial influences on ice nucleating particles during continuous springtime measurements in an Arctic oilfield location |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Aerosols that serve as ice nucleating particles (INPs) have the potential to modulate cloud microphysical properties and can therefore impact cloud radiative forcing (CRF) and precipitation formation processes. In remote regions such as the Arctic, aerosol–cloud interactions are severely understudied yet may have significant implications for the surface energy budget and its impact on sea ice and snow surfaces. Further, uncertainties in model representations of heterogeneous ice nucleation are a significant hindrance to simulating Arctic mixed-phase cloud processes. We present results from a campaign called INPOP (Ice Nucleating Particles at Oliktok Point), which took place at a US Department of Energy Atmospheric Radiation Measurement (DOE ARM) facility in the northern Alaskan Arctic. Three time- and size-resolved aerosol impactors were deployed from 1 March to 31 May 2017 for offline ice nucleation and chemical analyses and were co-located with routine measurements of aerosol number and size. The largest particles (i.e., ≥ 3 µ m or “coarse mode”) were the most efficient INPs by inducing freezing at the warmest temperatures. During periods with snow- and ice-covered surfaces, coarse mode INP concentrations were very low (maximum of 6 × 10 −4 L −1 at − 15 ∘ C), but higher concentrations of warm-temperature INPs were observed during late May (maximum of 2 × 10 −2 L −1 at − 15 ∘ C). These higher concentrations were attributed to air masses originating from over open Arctic Ocean water and tundra surfaces. To our knowledge, these results represent the first INP characterization measurements in an Arctic oilfield location and demonstrate strong influences from mineral and marine sources despite the relatively high springtime pollution levels. Ultimately, these results can be used to evaluate the anthropogenic and natural influences on aerosol composition and Arctic cloud properties. |
format |
Article in Journal/Newspaper |
author |
J. M. Creamean R. M. Kirpes K. A. Pratt N. J. Spada M. Maahn G. de Boer R. C. Schnell S. China |
author_facet |
J. M. Creamean R. M. Kirpes K. A. Pratt N. J. Spada M. Maahn G. de Boer R. C. Schnell S. China |
author_sort |
J. M. Creamean |
title |
Marine and terrestrial influences on ice nucleating particles during continuous springtime measurements in an Arctic oilfield location |
title_short |
Marine and terrestrial influences on ice nucleating particles during continuous springtime measurements in an Arctic oilfield location |
title_full |
Marine and terrestrial influences on ice nucleating particles during continuous springtime measurements in an Arctic oilfield location |
title_fullStr |
Marine and terrestrial influences on ice nucleating particles during continuous springtime measurements in an Arctic oilfield location |
title_full_unstemmed |
Marine and terrestrial influences on ice nucleating particles during continuous springtime measurements in an Arctic oilfield location |
title_sort |
marine and terrestrial influences on ice nucleating particles during continuous springtime measurements in an arctic oilfield location |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/acp-18-18023-2018 https://doaj.org/article/d7b3fc0d5f91419c972ff4bdf63e8a1e |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Sea ice Tundra |
genre_facet |
Arctic Arctic Ocean Sea ice Tundra |
op_source |
Atmospheric Chemistry and Physics, Vol 18, Pp 18023-18042 (2018) |
op_relation |
https://www.atmos-chem-phys.net/18/18023/2018/acp-18-18023-2018.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-18-18023-2018 1680-7316 1680-7324 https://doaj.org/article/d7b3fc0d5f91419c972ff4bdf63e8a1e |
op_doi |
https://doi.org/10.5194/acp-18-18023-2018 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
18 |
container_issue |
24 |
container_start_page |
18023 |
op_container_end_page |
18042 |
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1766310802948620288 |