Annual cycle observations of aerosols capable of ice formation in central Arctic clouds

Creamean, Jessie M.; Barry, Kevin R.; Hill, Thomas C. J.; Hume, Carson; DeMott, Paul J.; Shupe, Matthew D.; Dahlke, Sandro; Willmes, Sascha; Schmale, Julia; Beck, Ivo; Hoppe, Clara Jule Marie; Fong, Allison A.; Chamberlain, Emelia J.; Bowman, Jeff S.; Scharien, Randall K.; Persson, Ola

doi:10.1038/s41467-022-31182-x

Cited by 35 publications

(44 citation statements)

References 104 publications

(119 reference statements)

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“…Previous studies suggest that biological materials attached to or emitted with sea spray and mineral dust particles may contribute to INP activity in high latitudes (Tobo et al, 2019;Hartmann et al, 2020;Rinaldi et al, 2021;Creamean et al, 2022;Xi et al, 2022;Yun et al, 2022). Although TEM can detect such primary biological particles if they are present (Adachi et al, 2020), no such biological materials were found in the current fine-mode particles.…”

Section: Carbonaceous Particlesmentioning

confidence: 99%

Composition and mixing state of Arctic aerosol and cloud residual particles from long-term single-particle observations at Zeppelin Observatory, Svalbard

et al. 2022

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Abstract. The Arctic region is sensitive to climate change and is warming faster than the global average. Aerosol particles change cloud properties by acting as cloud condensation nuclei and ice-nucleating particles, thus influencing the Arctic climate system. Therefore, understanding the aerosol particle properties in the Arctic is needed to interpret and simulate their influences on climate. In this study, we collected ambient aerosol particles using whole-air and PM10 inlets and residual particles of cloud droplets and ice crystals from Arctic low-level clouds (typically, all-liquid or mixed-phase clouds) using a counterflow virtual impactor inlet at the Zeppelin Observatory near Ny-Ålesund, Svalbard, within a time frame of 4 years. We measured the composition and mixing state of individual fine-mode particles in 239 samples using transmission electron microscopy. On the basis of their composition, the aerosol and cloud residual particles were classified as mineral dust, sea salt, K-bearing, sulfate, and carbonaceous particles. The number fraction of aerosol particles showed seasonal changes, with sulfate dominating in summer and sea salt increasing in winter. There was no measurable difference in the fractions between ambient aerosol and cloud residual particles collected at ambient temperatures above 0 ∘C. On the other hand, cloud residual samples collected at ambient temperatures below 0 ∘C had several times more sea salt and mineral dust particles and fewer sulfates than ambient aerosol samples, suggesting that sea spray and mineral dust particles may influence the formation of cloud particles in Arctic mixed-phase clouds. We also found that 43 % of mineral dust particles from cloud residual samples were mixed with sea salt, whereas only 18 % of mineral dust particles in ambient aerosol samples were mixed with sea salt. This study highlights the variety in aerosol compositions and mixing states that influence or are influenced by aerosol–cloud interactions in Arctic low-level clouds.

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Section: Carbonaceous Particlesmentioning

confidence: 99%

Composition and mixing state of Arctic aerosol and cloud residual particles from long-term single-particle observations at Zeppelin Observatory, Svalbard

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Previous studies suggest that biological materials attached to or emitted with sea spray and mineral dust particles may contribute to INP activity in high latitudes (Tobo et al, 2019;Hartmann et al, 2020;Rinaldi et al, 2021;Creamean et al, 2022;Xi et al, 2022;Yun et al, 2022). Although TEM can detect such primary biological particles if they are present (Adachi 220 et al, 2020), no such biological materials were found in the current fine mode particles.…”

Section: Carbonaceous Particlesmentioning

confidence: 99%

“…This study is based on aerosol particles and cloud residual particles collected from the Zeppelin Observatory from 2017 to 80 2021 using impactor samplers and the CVI inlet. This period overlapped with the campaigns of the Ny-Ålesund AeroSol Cloud ExperimeNT (NASCENT) (Pasquier et al, 2022) and the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) (Shupe et al, 2022). We focused on measuring individual particles using scanning TEM coupled with…”

mentioning

confidence: 99%

Composition and mixing state of Arctic aerosol and cloud residual particles from long-term single-particle observations at Zeppelin Observatory, Svalbard

Adachi

Tobo

Koike

et al. 2022

Preprint

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Abstract. The Arctic region is sensitive to climate change and is warming faster than the global average. Aerosol particles change cloud properties by acting as cloud condensation nuclei and ice nucleating particles, thus influencing the Arctic climate system. Therefore, understanding the aerosol particle properties in the Arctic is needed to interpret and simulate their influences on climate. In this study, we collected ambient aerosol particles using whole-air and PM10 inlets and residual particles of cloud droplets and ice crystals from Arctic low-level clouds (typically, all-liquid or mixed-phase clouds) using a counterflow virtual impactor inlet at the Zeppelin Observatory near Ny-Ålesund, Svalbard, within a time frame of 4 years. We measured the composition and mixing state of individual fine-mode particles using transmission electron microscopy. On the basis of their composition, the aerosol and cloud residual particles were classified into mineral dust, sea salt, K-bearing, sulfate, and carbonaceous particles. The number fraction of aerosol particles showed seasonal changes, with sulfate dominating in summer and sea salt increasing in winter. There was no measurable difference in the fractions between ambient aerosol and cloud residual particles collected at ambient temperatures above 0 °C. On the other hand, cloud residual samples collected at ambient temperatures below 0 °C had several times more sea salt and mineral dust particles and fewer sulfates than ambient aerosol samples, suggesting that sea spray and mineral dust particles may influence the formation of cloud particles in Arctic mixed-phase clouds. We also found that 43 % of mineral dust particles from cloud residual samples were mixed with sea salt, whereas only 18 % of mineral dust particles in ambient aerosol samples were mixed with sea salt. This study highlights the variety of aerosol compositions and mixing states that influence or are influenced by aerosol-cloud interactions in Arctic low-level clouds.

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“…Therefore, information gained from in situ observations and modeling studies on the production of bioaerosols and their emission from the sea surface to the atmosphere, their abundance in the atmosphere, and their relative relationships with CCN and INPs, is critical when considering the importance of bioaerosols to the radiative budget and climate 15 effects via aerosol-cloud processes. Previous comprehensive observational studies focusing on sea surfaceaerosol-cloud interactions are limited (Abbatt et al, 2019;van Pinxteren et al, 2020;McFarquhar et al, 2021), and only a few studies have discussed the response of the abundance of CCN and INP number concentrations and activation properties to biogeochemical and environmental conditions based on in situ observations in the Southern Ocean and Antarctic (Schmale et al, 2019;Tatzelt et al, 2021), Arctic Ocean (Shupe et al, 2022), and 20Mediterranean Sea (Gong et al, 2019). Recently, an annual cycle of observation was conducted during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition to investigate the relationship between aerosols and clouds, and to assess the impact of aerosols on the climate.…”

Section: Introductionmentioning

confidence: 99%

Roles of marine biota in the formation of atmospheric bioaerosols, cloud condensation nuclei, and ice-nucleating particles over the North Pacific Ocean, Bering Sea, and Arctic Ocean

Kawana¹,

Taketani²,

Matsumoto³

et al. 2023

Preprint

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Abstract. We investigated the association of marine biological indicators (polysaccharides and protein-like gel particles, Chl-a) with the formation of fluorescent aerosol particles, cloud condensation nuclei (CCN), and ice-nucleating particles (INPs) over the North Pacific Ocean, Bering Sea, and Arctic Ocean during September–November 2019. The abundance of bioindicators was high in the North Pacific Ocean and the Bering Sea (e.g., up to 1.3 mg m−3 of Chl-a), suggesting high biological activity known as the autumn bloom. In the North Pacific Ocean, particles were characterized by high mass fractions of organics and sulfate with predominance of terrestrial air masses. Conversely, in the Bering Sea and the Arctic Ocean, particles were characterized by high mass fractions of sea salt and sulfate with predominance of maritime air masses. The averaged CCN concentration at 0.4 % supersaturation ranged from 99–151, 43–139, to 36 cm−3 over the North Pacific Ocean with terrestrial influences, over the Bering Sea with marine biogenic influences, and over the Arctic Ocean with marine influences, respectively, and the corresponding range of hygroscopicity parameter ĸ was 0.17–0.60, 0.42–0.68, and 0.67, respectively. The averaged INP concentration (NINP) measured at temperatures of −18 and −24 °C with marine sources was 0.01–0.09 and 0.1–2 L−1, respectively, and that over the Arctic Ocean was 0.001–0.016 and 0.012–0.27 L−1, respectively. When marine sources were dominant, fluorescent bioaerosols were strongly correlated with all bioindicator types (R: 0.81–0.88) when considering the wind-uplifting effect from the sea surface to the atmosphere. Correlations between NINP measured at −18 and −24 °C and all bioindicator types (R: 0.58–0.95 and 0.79–0.93, respectively) and between NINP and fluorescent bioaerosols (R: 0.50 and 0.60, respectively) were also positive, suggesting that marine bioindicators contributed substantially as sources of bioaerosols and cloud formation.

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Annual cycle observations of aerosols capable of ice formation in central Arctic clouds

Cited by 35 publications

References 104 publications

Composition and mixing state of Arctic aerosol and cloud residual particles from long-term single-particle observations at Zeppelin Observatory, Svalbard

Composition and mixing state of Arctic aerosol and cloud residual particles from long-term single-particle observations at Zeppelin Observatory, Svalbard

Composition and mixing state of Arctic aerosol and cloud residual particles from long-term single-particle observations at Zeppelin Observatory, Svalbard

Roles of marine biota in the formation of atmospheric bioaerosols, cloud condensation nuclei, and ice-nucleating particles over the North Pacific Ocean, Bering Sea, and Arctic Ocean

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