气候变化领域集成服务门户(CCPortal): Structure of an Atmospheric River Over Australia and the Southern Ocean: II. Microphysical Evolution

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DOI	10.1029/2020JD032514
	Structure of an Atmospheric River Over Australia and the Southern Ocean: II. Microphysical Evolution
	Finlon J.A.; Rauber R.M.; Wu W.; Zaremba T.J.; McFarquhar G.M.; Nesbitt S.W.; Schnaiter M.; Järvinen E.; Waitz F.; Hill T.C.J.; DeMott P.J.
发表日期	2020
ISSN	2169897X
卷号	125 期号:18
英文摘要	An atmospheric river affecting Australia and the Southern Ocean on 28–29 January 2018 during the Southern Ocean Clouds, Radiation, Aerosol Transport Experimental Study (SOCRATES) is analyzed using nadir-pointing W-band cloud radar measurements and in situ microphysical measurements from a Gulfstream-V aircraft. The AR had a two-band structure, with the westernmost band associated with a cold frontal boundary. The bands were primarily stratiform with distinct radar bright banding. The microphysical evolution of precipitation is described in the context of the tropical- and midlatitude-sourced moisture zones above and below the 0°C isotherm, respectively, identified in Part I. In the tropical-sourced moisture zone, ice particles at temperatures less than −8°C had concentrations on the order of 10 L−1, with habits characteristic of lower temperatures, while between −8°C and −4°C, an order of magnitude increase in ice particle concentrations was observed, with columnar habits consistent with Hallett-Mossop secondary ice formation. Ice particles falling though the 0°C level into the midlatitude-sourced moisture region and melting provided “seed” droplets from which subsequent growth by collision-coalescence occurred. In this region, raindrops grew to sizes of 3 mm and precipitation rates averaged 16 mm hr−1. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	atmospheric river; cloud processes; ice microphysics; seeder feeder
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185758
作者单位	Department of Atmospheric Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, United States; Now at Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; Cooperative Institute for Mesoscale and Microscale Studies, University of Oklahoma, Norman, OK, United States; School of Meteorology, University of Oklahoma, Norman, OK, United States; Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research, Eggenstein-Leopoldshafen, Germany; Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States
推荐引用方式 GB/T 7714	Finlon J.A.,Rauber R.M.,Wu W.,et al. Structure of an Atmospheric River Over Australia and the Southern Ocean: II. Microphysical Evolution[J],2020,125(18).
APA	Finlon J.A..,Rauber R.M..,Wu W..,Zaremba T.J..,McFarquhar G.M..,...&DeMott P.J..(2020).Structure of an Atmospheric River Over Australia and the Southern Ocean: II. Microphysical Evolution.Journal of Geophysical Research: Atmospheres,125(18).
MLA	Finlon J.A.,et al."Structure of an Atmospheric River Over Australia and the Southern Ocean: II. Microphysical Evolution".Journal of Geophysical Research: Atmospheres 125.18(2020).