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- Title
Vertical profiling of clouds and aerosols across the Southern Ocean.
- Authors
Alexander, Simon; Protat, Alain
- Abstract
We present highlights of recent Australian-led clouds and aerosol research over the SouthernOcean and coastal East Antarctica as part of the broader SOCRATES field campaigns. Usinga combined Raman-elastic backscatter lidar deployed aboard a ship, we quantify theproperties of aerosols within the remote Southern Ocean marine boundary layer between43∘S and 66∘S. In clean, marine air, we determine a lidar ratio of S = (18 ± 2) sr, aerosoloptical depths within the well-mixed near-surface layer of τ = (0.12 ± 0.08) north of 55∘Sand τ = (0.07 ± 0.04) further south. Dried sea salt is observed in the lower part ofdehumidified decoupled layers across all latitudes. Merging cloud data from this lidar and aW-band cloud radar allows us to quantify various cloud properties across the SouthernOcean; we will also present results of the differences in cloud properties acrossthe oceanic polar front boundary. Lastly, we present the seasonal cycle of cloudproperties at Macquarie Island (54∘S) based on data from our lidar and the cloud radar.Initial highlights from our current Davis (69∘S) deployment will also be presented.
- Subjects
ANTARCTICA; MACQUARIE Island (Tas.); AEROSOLS; BOUNDARY layer (Aerodynamics); OCEAN; VERTICAL seismic profiling; SEA salt; LIDAR
- Publication
Geophysical Research Abstracts, 2019, Vol 21, p1
- ISSN
1029-7006
- Publication type
Article