Journal article
Characteristics and Variability of Precipitation Across Different Sectors of an Extra-Tropical Cyclone: A Case Study Over the High-Latitudes of the Southern Ocean
SCH Truong, ST Siems, PT May, Y Huang, undefined Vignon, A Gevorgyan
Journal of Geophysical Research Atmospheres | AMER GEOPHYSICAL UNION | Published : 2023
DOI: 10.1029/2023JD039013
Abstract
Shipborne observations from the CAPRICORN-2018 field campaign were used to investigate the characteristics and variability of precipitation across different sectors of an extra-tropical cyclone on 16 February 2018, over the Southern Ocean (SO). Three distinct time periods—frontal, post-frontal, and cyclone—were identified during the day. The frontal passage recorded a total accumulation of 1.9 mm, where the precipitation phases were primarily composed of rain (96%), while the cyclone period recorded the largest precipitation (4.0 mm), where the precipitation phases varied with snow (10%), mixed-phase (40%), and rain (50%). The BASTA radar suggests the freezing level was shallow (∼500 m) with..
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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 acknowledge the use of the CSIRO Marine National Facility () and grant of sea time on RV Investigator in undertaking this research. We greatly appreciate Emeritus Prof. Michael Manton and Prof. Michael Reeder from Monash University for insightful comments on the work. We acknowledge Alain Protat and Valentine Louf for their work in preparing the OceanPOL data. We thank Estefania Montoya Duque for valuable discussion on the GPM (IMERG) and ERA5 precipitation dataset. Lastly, we thank the three reviewers' thoughtful suggestions, which helped us improve our paper.