Articles | Volume 23, issue 6
https://doi.org/10.5194/acp-23-3749-2023
https://doi.org/10.5194/acp-23-3749-2023
Measurement report
 | 
29 Mar 2023
Measurement report |  | 29 Mar 2023

Measurement report: Understanding the seasonal cycle of Southern Ocean aerosols

Ruhi S. Humphries, Melita D. Keywood, Jason P. Ward, James Harnwell, Simon P. Alexander, Andrew R. Klekociuk, Keiichiro Hara, Ian M. McRobert, Alain Protat, Joel Alroe, Luke T. Cravigan, Branka Miljevic, Zoran D. Ristovski, Robyn Schofield, Stephen R. Wilson, Connor J. Flynn, Gourihar R. Kulkarni, Gerald G. Mace, Greg M. McFarquhar, Scott D. Chambers, Alastair G. Williams, and Alan D. Griffiths

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Cited articles

Alexander, S. P. and Klekociuk, A. R.: Constraining Ice Water Content of Thin Antarctic Cirrus Clouds Using Ground-Based Lidar and Satellite Data, J. Atmos. Sci., 78, 1791–1806, https://doi.org/10.1175/JAS-D-20-0251.1, 2021. a
Alroe, J.: Emission Sources, Cloud-Relevant Properties and Variability of Aerosol over the Southern and Pacific Oceans, PhD thesis, Queensland University of Technology, https://doi.org/10.5204/thesis.eprints.209152, 2021. a
Alroe, J., Cravigan, L. T., Miljevic, B., Johnson, G. R., Selleck, P., Humphries, R. S., Keywood, M. D., Chambers, S. D., Williams, A. G., and Ristovski, Z. D.: Marine productivity and synoptic meteorology drive summer-time variability in Southern Ocean aerosols, Atmos. Chem. Phys., 20, 8047–8062, https://doi.org/10.5194/acp-20-8047-2020, 2020. a, b, c, d, e
Asmi, E., Frey, A., Virkkula, A., Ehn, M., Manninen, H. E., Timonen, H., Tolonen-Kivimäki, O., Aurela, M., Hillamo, R., and Kulmala, M.: Hygroscopicity and chemical composition of Antarctic sub-micrometre aerosol particles and observations of new particle formation, Atmos. Chem. Phys., 10, 4253–4271, https://doi.org/10.5194/acp-10-4253-2010, 2010. a
Ayers, G. P. and Gras, J. L.: Seasonal Relationship between Cloud Condensation Nuclei and Aerosol Methanesulphonate in Marine Air, Nature, 353, 834–835, https://doi.org/10.1038/353834a0, 1991. a
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Short summary
Observations of aerosols in pristine regions are rare but are vital to constraining the natural baseline from which climate simulations are calculated. Here we present recent seasonal observations of aerosols from the Southern Ocean and contrast them with measurements from Antarctica, Australia and regionally relevant voyages. Strong seasonal cycles persist, but striking differences occur at different latitudes. This study highlights the need for more long-term observations in remote regions.
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