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Ian Faloona (UC Davis), The Importance...

Fiamma Straneo (Scripps Institution of...

Upcoming Seminar

Chris Bretherton (University of Washington),Boundary layer clouds and aerosols over the Southern Ocean: New observations for making better climate models.

Wed, Feb 20, 2019

MSA 7124

ABSTRACT

The Southern Ocean is stormy, cloudy and remote. Global climate models typically simulate too little cloud in the cold sector of the extratropical cyclones that constantly sweep across it and struggle with their microphysics, with regional and global consequences for our changing climate. Recent field and modeling studies are enriching our understanding of these processes and biases. During 2016-2018, the U. S. and Australia jointly coordinated four campaigns studying cloud, aerosol, and ocean surface processes between Tasmania and Antarctica. Cruises of a research ship gave a holistic view of the upper ocean and lower atmosphere during two summers; an island station provided year-round measurements, an icebreaker sampled down to the Antarctic coast, and a research aircraft sampled the clouds. Intriguing early results include a surprisingly high concentration of small sulfate aerosol particles, an extreme lack of ice nuclei, prevalence of high-albedo multilayer supercooled liquid clouds at temperatures as low as -30 C, lightly precipitating ice and even drizzle, and relatively high cloud droplet number concentrations much of the time. Two climate models nudged to real temperature and wind fields were sampled at the same places and times as these observations. With realistic meteorology, they position the cloud layers reasonably but compare much less well with observed profiles of aerosols, liquid, ice and precipitation.

Cigdem Akan	Postdoctoral Scholar	akanc [at] ucla.edu
Xin An	Postdoctoral Scholar	xinan [at] atmos.ucla.edu
Akio Arakawa	Distinguished Research Professor Emeritus	aar [at] atmos.ucla.edu	MSA 7141
Tersi Arias	Graduate Student	tersiarias [at] atmos.ucla.edu
Cody Ashe-McNalley	Systems Administrator / Programmer	cody [at] atmos.ucla.edu	MSA 7101
Roy Bakarn	Postdoctoral Scholar
Daniele Bianchi	Assistant Professor	dbianchi [at] atmos.ucla.edu	MSA 7949
Jacob Bortnik	Associate Professor	jbortnik [at] atmos.ucla.edu	MSA 7228
Nathaniel Brockway	Graduate Student	nwbrock [at] atmos.ucla.edu
Marcelo Chamecki	Associate Professor	chamecki [at] ucla.edu
Yi Chao	Adjunct Professor	ychao001 [at] gmail.com
Mickael D. Chekroun	Associate researcher	mchekroun [at] atmos.ucla.edu
Gang Chen	Associate Professor	gchenpu [at] atmos.ucla.edu	MSA 7149
Jie Rou Chen	Graduate Student	jchen [at] atmos.ucla.edu
Tomas Chor	Graduate Student	tomaschor [at] atmos.ucla.edu
Chris Collimore	Graduate Student	cccollimore [at] atmos.ucla.edu
Santo Fedele Colosimo	Postdoctoral Scholar	fedele [at] atmos.ucla.edu
Daniel Dauhajre	Graduate Student	ddauhajre [at] atmos.ucla.edu
Anthony DeAngelis	Postdoctoral Scholar	adeangelis [at] atmos.ucla.edu
Daphne Dizon	Administrative Specialist	djdizon [at] atmos.ucla.edu	MS 7127
Charles Dong	Research Professor	cdong [at] atmos.ucla.edu
Rob Eagle	Assistant Professor	robeagle [at] g.ucla.edu
Annmarie Eldering	Adjunct Assistant Professor	eldering [at] atmos.ucla.edu
Monica Fiello	Administrative Assistant
Robert Fovell	Professor Emeritus	fovell [at] atmos.ucla.edu	MSA 7162
Randall Friedl	Adjunct Professor
Rong Fu	Professor	rfu [at] atmos.ucla.edu	MSA 7173
Michael Ghil	Distinguished Research Professor	ghil [at] atmos.ucla.edu	MSA 7236
Geoff Girard	Chief Administrative Officer	girard [at] atmos.ucla.edu	MS 7133
David Gonzalez-Martinez	Graduate Student	dhgonzalez89 [at] ucla.edu
Matthew Grieco	Graduate Student	mgrieco [at] atmos.ucla.edu
Andreas Groth	Researcher	andreasgroth [at] atmos.ucla.edu	MS 7234
Yu Gu	Researcher	gu [at] atmos.ucla.edu	GE 2645
Jonathan Gula	Assistant Researcher
Katrina Hales	Staff Research Associate
Alex Hall	Professor/Vice Chair	alexhall [at] atmos.ucla.edu	MSA 7955
Larry Harding	Adjunct Professor	lharding [at] atmos.ucla.edu	SH 5853
Julia Hazel	Graduate Student	jhazel [at] atmos.ucla.edu
Spencer Hill	Postdoctoral Scholar	shill [at] gps.caltech.edu	Geology 4684
Dial Hoang	Graduate Student	dhoang [at] atmos.ucla.edu
Yue Huang	Graduate Student	yhuang [at] atmos.ucla.edu
Steve Hurlock	Assistant Researcher	steveh [at] atmos.ucla.edu	BH 9277A
Alex Jousse	Postdoctoral Scholar	jousse [at] atmos.ucla.edu
Heejeong Kim	Assistant Researcher	heekim [at] atmos.ucla.edu	MS 7115
Jinwon Kim	Researcher	jkim [at] atmos.ucla.edu	GE 2645
Jasper Kok	Associate Professor	jfkok [at] ucla.edu	MSA 7142
Dmitri Kondrashov	Researcher	dkondras [at] atmos.ucla.edu	MS 7232
Yi-Hung Kuo	Graduate Student	yhkuo [at] atmos.ucla.edu
Baird Langenbrunner	Researcher	baird [at] atmos.ucla.edu
Hung-I Lee	Graduate Student	hilee [at] atmos.ucla.edu
Anita Leinweber	Adjunct Assistant Professor	leinweber [at] igpp.ucla.edu	SH 5843
Sydnie Lemieux	Graduate Student	slemieux [at] atmos.ucla.edu
Grace Leon	Contract and Grants Manager	gleon [at] atmos.ucla.edu	MS 7127
Kara Leung	User Support & Systems Administrator	kleung [at] atmos.ucla.edu	MS 7101A
Jeffrey Lew	Lecturer	lew [at] atmos.ucla.edu	MSA 1963
Jinxing Li	Postdoctoral Scholar	jli [at] atmos.ucla.edu
Qinbin Li	Professor	qli [at] atmos.ucla.edu	MSA 7220
Wen Li	Assistant Researcher	moonli [at] atmos.ucla.edu	MS 7984
Kuo-Nan Liou	Distinguished Professor	knliou [at] atmos.ucla.edu	MSA 7163
Denise Lopez	Administrative Specialist	dlopez [at] atmos.ucla.edu	MS 7127
Larry Lyons	Distinguished Professor	larry [at] atmos.ucla.edu	MSA 7138
Qianli Ma	Postdoctoral Scholar	qianlima [at] atmos.ucla.edu
Raleigh Martin	Postdoctoral Scholar	raleighm [at] atmos.ucla.edu	BH 9258
Cristian Martinez-Villalobos	Postdoctoral Scholar	cmartinezvil [at] atmos.ucla.edu
Matthew McKinney	Graduate Student	mmckinney [at] atmos.ucla.edu
Jim McWilliams	Louis B. Slichter Professor of Earth Sciences	jcm [at] atmos.ucla.edu	MSA 7983
Diana McWilliams	Administrative Specialist	dmcw [at] atmos.ucla.edu	MSA 7983
C. Roberto Mechoso	Distinguished Professor	mechoso [at] atmos.ucla.edu	MSA 7173
Joyce E. Meyerson	Staff Research Associate
Jonathan Mitchell	Associate Professor	mitch [at] atmos.ucla.edu	GE 4684
Jeroen Molemaker	Associate researcher	nmolem [at] atmos.ucla.edu
Jordyn Moscoso	Graduate Student	jmoscoso [at] atmos.ucla.edu
James Murakami	Staff Meteorologist	tenki [at] atmos.ucla.edu	MS 7101
Timothy Myers	Postdoctoral Scholar	tamyers [at] atmos.ucla.edu
J. David Neelin	Professor	neelin [at] atmos.ucla.edu	MSA 7969
Yukitoshi Nishimura	Assistant Researcher	toshi [at] atmos.ucla.edu	MS 7115
Jesse Norris	Postdoctoral Scholar	jessenorris [at] ucla.edu	Boelter 9275
Paul Northrop	Assistant Development Engineer
S. C. (Steve) Ou	Researcher	ssou [at] atmos.ucla.edu	GE 2645
Suzanne Paulson	Professor	paulson [at] atmos.ucla.edu	MSA 7157
Kimberly Perez	Student Affairs Officer	kperez [at] atmos.ucla.edu	MS 7127
Ole Peters	Assistant Researcher	ole [at] santafe.edu
Olga Pikelnaya	Researcher	olga [at] atmos.ucla.edu
Victor Pinto	Graduate Student	vpinto [at] ucla.edu
Xin Qu	Assistant Researcher	xinqu [at] atmos.ucla.edu
Dilhara Ranasinghe	Graduate Student	dilharar [at] atmos.ucla.edu	BH 9277
Katharine Reich	Administrative Specialist
Lionel Renault	Assistant Researcher
Rigoberto Resendiz	Contract and Grants Manager	rigoberto.resendiz [at] stat.ucla.edu	MS 8125D
Pablo Saide	Assistant Professor	saide [at] atmos.ucla.edu	MSA 7234
Ulli Seibt	Associate Professor	ulli [at] atmos.ucla.edu	MSA 7975
Alexander Shchepetkin	Project Scientist	alex [at] atmos.ucla.edu
Yong Shi	Assistant Researcher	yongshi [at] atmos.ucla.edu
Aviv Solodoch	Graduate Student	asolodoch [at] atmos.ucla.edu
Andrew Stewart	Assistant Professor	astewart [at] atmos.ucla.edu	MSA 7162
Jochen Stutz	Professor / Chair	jochen [at] atmos.ucla.edu	MSA 7172
Hui Su	Adjunct Professor	Hui.Su [at] jpl.nasa.gov
Fengpeng Sun	Assistant Researcher	sun [at] atmos.ucla.edu	MS 7343
Wu Sun	Graduate Student	wu.sun [at] ucla.edu	MS 7221
Yoshihide Takano	Project Scientist	ytakano [at] atmos.ucla.edu	GE B691
Richard Thorne	Distinguished Professor	rmt [at] atmos.ucla.edu	MSA 7979
Tina Treude	Professor	ttreude [at] g.ucla.edu	SH 5859
Aradhna Tripati	Associate Professor	ripple [at] zephyr.ess.ucla.edu	GE 2659
Katie Tuite	Graduate Student	ktuite [at] atmos.ucla.edu
Richard Turco	Distinguished Professor Emeritus	turco [at] atmos.ucla.edu	MSA 7157
Francis Turney	Graduate Student	fturney [at] ucla.edu
Duane Waliser	Adjunct Professor	duane.waliser [at] jpl.nasa.gov	MSA 7969
Boyi Wang	Graduate Student	bywang [at] atmos.ucla.edu
Chih-Ping Wang	Associate researcher	cat [at] atmos.ucla.edu	MS 7115
Xiaoyan Xing	Assistant Researcher	xyxing [at] atmos.ucla.edu
Yongkang Xue	Professor	yxue [at] geog.ucla.edu	Bunche 1255
Chao Yue	Postdoctoral Scholar	yuechao [at] atmos.ucla.edu
Henry Zapata	User Support Specialist	henryz [at] atmos.ucla.edu	MS 7101
Eftyhia Zesta	Associate researcher	ezesta [at] atmos.ucla.edu	MS 7220
Ken Zhao	Graduate Student	kzhao [at] atmos.ucla.edu
Ying Zou	Postdoctoral Scholar	ying [at] atmos.ucla.edu

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ABSTRACT

Campus Address

Mailing Address

Contact Information

Campus Address	Mailing Address	Contact Information
520 Portola Plaza	UCLA Atmospheric & Oceanic Sciences	Students Services Office: (310) 825-1954
Math Sciences Building 7127	Box 951565	Email: studentinfo@atmos.ucla.edu
Los Angeles, CA 90095	Los Angeles, CA 90095-1565	Phone: (310) 825-1217