Cloud phase and macrophysical properties over the Southern Ocean during the MARCUS field campaign

• Published in: Atmospheric Measurement Techniques
• Main Authors: Xi, Baike, Dong, Xiquan, Zheng, Xiaojian, Wu, Peng
• Language: unknown
• Published: 2023
• Subjects: 54 ENVIRONMENTAL SCIENCES; Southern Ocean; aurora australis
• Online Access: http://www.osti.gov/servlets/purl/1876365; https://www.osti.gov/biblio/1876365; https://doi.org/10.5194/amt-15-3761-2022

To investigate the cloud phase and macrophysical properties over the Southern Ocean (SO), the Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Mobile Facility (AMF2) was installed on the Australian icebreaker research vessel (R/V) Aurora Australis during the Measurements of Aerosols, Radiation, and Clouds over the Southern Ocean (MARCUS) field campaign (41 to 69° S, 60 to 160° E) from October 2017 to March 2018. To examine cloud properties over the midlatitude and polar regions, the study domain is separated into the northern (NSO) and southern (SSO) parts of the SO, with a demarcation line of 60°S. The total cloud fractions (CFs) were 77.9 %, 67.6 %, and 90.3 % for the entire domain, NSO and SSO, respectively, indicating that higher CFs were observed in the polar region. Low-level clouds and deep convective clouds are the two most common cloud types over the SO.