Cloud and Precipitation Over the Southern Ocean from the RV Investigator
Abstract
During Austral Autumn 2016 and Summer 2018, the Australian Research Vessel Investigator conducted voyages into the remote Southern Ocean south of Tasmania carrying a suite of modern atmospheric remote sensing instruments. Lasting 5 and 6 weeks, respectively, these voyages documented cloud and precipitation properties using millimeter Doppler radar, optical lidar, and passive microwave radiometry. In addition, radiosondes were routinely launched to characterize the thermodynamic structure of the atmosphere. Findings from these voyages are still emerging but the 2016 voyage revealed that supercooled stratocumulus near the base of the marine inversion in decoupled marine boundary layers composed a significant fraction of the characteristically high cloud cover. We this paper, we will review these findings and present new results from the 2018 voyage that penetrated significantly farther south into the marginal ice zone. We will, in addition, highlight case studies during which the NSF GV overflew the Investigator as part of the SOCRATES mission.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2018
- Bibcode:
- 2018AGUFM.A13G2536M
- Keywords:
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- 0305 Aerosols and particles;
- ATMOSPHERIC COMPOSITION AND STRUCTUREDE: 0320 Cloud physics and chemistry;
- ATMOSPHERIC COMPOSITION AND STRUCTUREDE: 3310 Clouds and cloud feedbacks;
- ATMOSPHERIC PROCESSESDE: 3349 Polar meteorology;
- ATMOSPHERIC PROCESSES