Journal article

A Climatology of the Marine Atmospheric Boundary Layer over the Southern Ocean from Four Field Campaigns during 2016–2018

Son Truong, Yi Huang, Francisco Lang, Martina Messmer, Ian Simmonds, Steven Siems, Michael Manton

Journal of Geophysical Research: Atmospheres | American Geophysical Union | Published : 2020

Abstract

A climatology of the marine atmospheric boundary layer (MABL) and the lower free troposphere over the Southern Ocean (SO) is constructed using 2,186 high‐resolution atmospheric soundings from four recent campaigns conducted in the period of 2016–2018. Relationships between the synoptic meteorology and MABL thermodynamic structure are examined using a k‐means cluster analysis, complemented by front and cyclone composite analyses. Seven distinct clusters are identified, five of which are consistent with an established climatology over the SO storm track. Two new clusters (C1 and C2) are introduced over the high‐latitude SO. C1 is commonly located poleward of the ocean polar front near mesocycl..

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Grants

Awarded by Australian Research Council


Funding Acknowledgements

This work is supported by an Australian Research Council discovery grant DP190101362. The authors deeply thank the entire CAPRICORN, MARCUS, MICRE, and SOCRATES teams for their tremendous efforts and dedication in collecting the data sets. We thank the CSIRO MNF for its great support and service. We greatly appreciate Micheal Reeder from Monash University for providing support with the front identification algorithm. We sincerely thank Alain Protat at The Bureau of Meteorology, Australia and Dr. Peter May at Monash University for insightful comments on the work.