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SCRIPPS OCEANOGRAPHY
  • University of California-San Diego
  • 9500 Gilman Drive
  • La Jolla CA 92093-0532 USA
  • Tel: 1-858-534-0000
  • Fax: 1-858-534-0000
Recent Alumni

Li Xu 2012-2016

Li joined the Russell group as a postdoctoral scholar in April 2012 after she received her PhD in Atmospheric Science from University of Michigan. Her research activities involved multiscale modeling of aerosol indirect effects on decadal timescales and parameterization for frost flower aerosols salt emissions in the Arctic.


Yang Yang 2015-2016

Yang joined the Russell group as a postdoctoral scholar in February 2015 after he received his PhD in Atmospheric PPhysics and Atmospheric Environment from Institute of Atmospheric Physics, Chinese Academy of Sciences. His research activities included modeling of aerosol-cloud interaction, cloud radiative effects and aerosol transport variabilities on interannual timescales.


Sijia Lou 2015-2016

Sijia joined the Russell group as a postdoctoral scholar in April 2015 after she received her PhD in Atmospheric Physics and Atmospheric Environment from Institute of Atmospheric Physics, Chinese Academy of Sciences. Her research activities involved the interaction between dynamic cycles and dust aerosols over Asia.


Melissa Nguyen 2015

Melissa joined the Russell group in the summer of 2015 during her third year as an undergraduate at UC San Diego. She graduated with a bachelor degree of science in Chemical Engineering in the spring of 2016.


Kylee Chang 2013-2014


Kylee joined the Russell group in July 2013 as a graduate student in Marine Chemistry after graduating from Loyola Marymount University with a B.S. in Chemistry and working at the South Coast Air Quality Management District in Los Angeles. Her current research project involves analyzing filter samples from Alert, Canada for their chemical properties and comparing functional groups with filter and ice core samples from Washington. Her other interests include biological contributions to particle formation in the Arctic.


Seth Chunn 2013-2014


Seth joined the research group in the Fall of 2013 as an undergraduate at the University of California, San Diego. He graduated in the Spring of 2014 with a degree in Chemical Engineering.


Amanda Frossard 2008-2014


Amanda completed her PhD in Russell group in 2014. Her research focus was on aerosol particles, as a graduate student in Climate Science. She graduated from UC Berkeley with a BS in Chemistry in 2008 where she became interested in atmospheric chemistry. Her PhD work focused on determining the sources and composition of organic mass in the marine boundary layer using measurements of ambient and generated marine particles. Amanda also worked on determining the contributions of combustion sources to submicron organic mass in the Arctic, as part of the ICEALOT project. During her dissertation work, she measured the concentration and composition of ambient marine aerosol particles during three shipboard campaigns: CalNex, EPEACE, and WACS. During CalNex and WACS, Amanda also determined the organic composition of primary marine aerosol particles generated using the Bubbler and the Sea Sweep. Amanda is now a postdoctoral researcher at UC Berkeley in the Cohen Group in the Chemistry Department.


Ashley Corrigan 2009-2014


Ashley joined the Russell Group in September 2009 as part of the SIO Marine Chemistry Curricular Group, after graduating from the University of San Diego with a B.A in Biochemistry and Biology.  Her research included a collaboration at California Institute of Technology, measuring organic functional groups of secondary organic aerosols generated in laboratory smog chambers. Her research included participating in the CAL-NEX study at California Institute of Technology in May 2010. She will also studyed biogenic aerosols during the HUMPPA Campaign at the SMEAR II research site in Hyytiala, Finland during July 2010.


Janin Guzman Morales 2011-2013


Janin joined the Russell group in winter 2011 as a research scholar, after obtaining her B.S. in Chemistry at the National Autonomous University of Mexico. She became an SIO graduate student in Fall 2012 in the Marine Chemistry curricular group. She was actively involved in aerosol sampling, collecting data with the High Resolution Aerosol Mass Spectrometer at the Mt. Soledad, La Jolla, California Project in May-June 2012 and at the Western Atlantic Climate Study in August 2012. She is interseted in the relative contribution of different types of fuels to submicron particles in California urban areas.


Johannes Muelmenstaedt 2011-2012


Johannes joined the Russell group as a postdoctoral scholar in January 2011. He received his PhD in the physics of fundamental particles from UC Berkeley and then decided to turn his attention to larger systems. His projects included modeling of cloud microphysics in the Arctic and analysis of the E-PEACE 2011 data.


Rob Modini 2010-2012


Rob joined the Russell group as a postdoctoral researcher in November 2010. Shortly before, he obtained his PhD from Queensland University of Technology in Australia for work on the water uptake properties of marine aerosols. Continuing with the oceanic theme, Rob's current research at SIO was focused on sea spray aerosols. He conducted small- and large-scale bubble-bursting experiments to better characterize the production flux and chemical composition of sea spray particles produced under a range of different oceanic and atmospheric conditions.


Patrick Ferree 2012-2012


Patrick joined the group in the spring of 2012 as an undergraduate at UCSD. That spring he graduated with a B.S. in Chemistry and Philosophy.


Kabin Shakya 2011-2012


Kabin joined the Russell group as a postdoctoral scholar in August 2011. He received a Ph.D. in environmental engineering from Rice University. His previous works include characterizing the aerosols from Kathmandu, New Hampshire, and Houston, and smog chamber investigation on secondary organic aerosols and gaseous mercury chemistry. He is currently working on characterizing chamber particles using scanning transmission X-ray microscopy with near-edge absorption fine structure (STXM-NEXAFS). His other projects include studying the ambient particles using single particle soot photometer (sp2) and fourier transform infrared (FTIR) spectroscopy. His research interests include the study areas in aerosol chemistry, aerosol measurements, source apportionments, and secondary organic aerosol.


Anita Johnson 2010-2012

Anita joined the Russell group as an undergraduate in spring 2010, and after graduating from UCSD with a B.S. in Environmental Chemistry, became a Staff Research Associate. Her research included FTIR support in Tijuana during CalMex, analyzing the group's automated algorithm for quantifying FTIR spectra, and examining the effects of salt hydrates samples for FTIR. She provided FTIR support for collaborative studies around the world and is now a graduate student at Drexel University.



Shang Liu 2006-2012


Shang joined the Russell group of SIO in the fall of 2006. His research focused on the sources and formation of ambient secondary organic aerosols (SOA). To achieve this goal, he conducted several field measurements to study the chemical and physical properties of ambient aerosols using a set of online and offline techniques, including FTIR, HR-ToF-AMS, SMPS, and STXM-NEXAFS. He applied factor analysis to the ambient measurements to extract the sources that likely contributed to the SOA. To better understand the SOA formation mechanisms, Shang conducted reaction chamber studies in the lab. Special attention is given to the formation and loss of organonitrate functional groups. Shang has now finished working on the data collected at Bakersfield in May and June 2010 during the CalNex project.

Liu et al., Atmos. Chem. Phys., 2009.

Ranjit Bahadur 2004-2012


Ranjit was a Staff Research Associate in the Russell Group. His previous work has focused on theoretical simulations of phase transitions in atmospheric nanoparticles. Over time, Ranjit moved into compiling atmospheric aerosol measurements to provide a cohesive picture of organic carbon from the many organic aerosol sources. Most recently, Ranjit analyzed a large collection of black carbon measurements to address the question, "How is aerosol radiative forcing changing?"

Bahadur et al., Journal of Chemical Physics, 2006.
Bahadur et al., Journal of Physical Chemistry B, 2007.
Bahadur et al., Aerosol Science and Technology, 2008.
Bahadur et al., Journal of Chemical Physics, 2008.
Bahadur et al., Atmospheric Environment, 2009.
Bahadur et al., Environmental Science and Technology, 2010.
Bahadur et al., Aerosol Science and Technology, 2010.



Lars Ahlm 2010-2012


Lars joined the Russell group as a postdoctoral scholar in June 2010, after defending his PhD at Stockholm University in Sweden. His interests included aerosol and cloud microphysical growth, which he is studied using measurements collected at Bakersfield and Whistler.  He also looked at aerosol growth events from organic precursors.




Alice the Aerosol-Detector Dog


Alice had state-of-the-art nano-bio-detectors that targeted very low detection limits for carbonaceous particles derived from bovine sources after incomplete combustion using charred wood and coal fuels.  Her nano-sensors used bio-mimicking messengers to track complex compositions with "smart" adaptive learning algorithms.  Other meat-cooking operations were also studied, with a special focus on lamb, turkey, and salmon.  Particle analysis was performed online in real-time, typically resulting in complete digestion of complex proteins and carbohydrates with highly oxygenated organic functional groups.




Satoshi Takahama 2006-2011


Satoshi was a Project Scientist with the Russell Group. He focused on characterizing chemical composition and morphology of individual particles using Scanning Transmission X-Ray Microscopy (STXM) with carbon K-edge spectroscopy. Particles analyzed were collected during ACE-Asia, DYCOMS II, PELTI, MILAGRO, INTEX-B, ICEALOT, VOCALS REx, and AeroSCOPE. He also worked on a project to simulate thermophysical and dynamic properties of atmospheric systems containing organic molecules by molecular dynamics. Past projects include sample collection and analysis of FTIR organic functional-group composition of PM1 particles from Mexico City (urban location) and analysis of particle heterogeneity and oxidation state of iron in indiviual particles by STXM. He is now an Assistant Professor of Atmospheric Chemistry and Quality of the Air at the School of Architecture, Civil and Environmental Engineering (ENAC) at Ecole Polytechnique federale de Lausanne in Lausanne, Switzerland.

Takahama et al., Atmospheric Environment, 2007.
Takahama et al., Journal of Geophysical Research, 2008
Takahama et al., Journal of Geophysical Research, 2010
Takahama et al., Journal of Geophysical Research, 2010b


Zhan Zhao 2009-2011


Zhan joined the Russell group as a postdoctoral scholar in December 2009, after earning her PhD at the University of California, Davis. Her work focused on coupling Weather Research and Forecasting model with Chemistry (WRF/Chem) with an the Multiscale Aerosol Climate Model (MACM) to study the impact of local vs. non-local aerosol on regional climate and air quality simulation. She is now an Air Quality Specialist at the California Air Research Board.

Zhao et al. 2012J. Geophys. Res., 2012, in press.



Patrick Shaw 2008-2010


Patrick joined the Russell Group in June 2008 as a graduate student in Climate Sciences. He received his B.A. in Physics from the University of San Diego in 2005, and his M.S. in Atmospheric Science from the University of Arizona in 2007. His interests included Artic aerosols and aerosol-cloud interactions, and he focused on a North pole organic aerosol field campaign in Barrow, Alaska.

Shaw et al., Geophysical Research Letters, 2010



Lelia Hawkins 2005-2010


Lelia completed her PhD in the Russell Group in April 2010. Her main research interests included aerosols in marine environments and organic aerosol speciation. She received her B.S. in Chemistry and Environmental Systems from UCSD in 2005 where she discovered her passion for atmospheric chemistry, clouds and climate science in general. Lelia analyzed and published field measurements of organic aerosol collected at the Scripps Pier in June-September 2008 and shipboard measurements of organic aerosol collected during the fall 2008 VOCALS-REx campaign in the southeast Pacific Ocean. These studies focus on the effect of continental emissions on aerosol loading in coastal and remote marine atmospheres. Lelia also used single particle x-ray microscopy to analyze primary marine organic aerosol from shipboard measurements. Lelia then completed a Research and Teaching Postdoc with Dr. David De Haan at University of San Diego. She is now an assistant professor of chemistry at Harvey Mudd College.

Hawkins et al., Journal of Geophysical Research, 2008.
Hawkins et al., Journal of Geophysical Research, 2010.
Hawkins and Russell, Atmospheric Environment, 2010a.
Hawkins and Russell, Advances in Meteorology, 2010b.
Dissertation, 2010



Becca Rolph 2010-summer

Becca worked in the Russell group when she was a fourth year undergraduate student at McGill University in Montréal, Québec. Her major is Environment, with emphasis on atmospheric science and physical oceanography, and will also complete a minor in Chemistry. Her work in Lynn Russell's group concerns the CalNex 2010 field study. She has prepared filters for field sample collection, is currently scanning samples using FTIR when they return from the field, and is primarily focused on the CalTech groundsite. She is using FTIR measurements to identify organic functional groups and to link ambient aerosol particles with potential sources. She will be graduating in December 2011 with her undergraduate degree from McGill.





Rachel Schwartz 2007-2010


Rachel completed her Masters thesis in 2010 on her work on biogenic aerosols at Whistler. In spring 2008, she sampled at a mid-mountain site in Whistler, BC. Surrounded by forest this is a great location to look at biogenic influences on aerosol chemistry. In winter 2009 she collected sub- and supermicron bulk and single particle measurements up the mountain, at Whistler peak with Environment Canada.

Schwartz et al.,
Atmospheric Chemistry and Physics Discussions, 2010.
Masters Thesis, 2010.



Douglas Day 2008-2010


Doug joined the research group in October 2008 as a postdoctoral scholar. His work has focused on analyzing the regional differences of organic composition of single and submicron particles from measurements made during the INTEX-B campaign. He also evaluated cloud condensation nuclei activity and its relation to organic composition from the same campaign. During 2009, Doug conducted field measurements of organic aerosol at the Scripps Pier using AMS and FTIR. He is participated in CalNex, a collaborative field campaign aimed at understanding the issues at the nexus of air quality and climate change problems, as part of the Russell group measurements at Bakersfield. Doug is now a Research Scientist at the University of Colorado at Boulder (CU).

Day et al.,
Atmospheric Chemistry and Physics, 2009.
Day et al., Atmospheric Environment, 2010.



Tim Uplinger 2008-2009


Tim graduated in 2009 as a UCSD undergraduate Environmental Systems - Environmental Chemistry student. He first got involved with the Russell lab in October 2008, working in the lab as a Chancellor's Research scholar. His work included quantifying phenols in atmospheric aerosols for the 2004 ICARTT project.

Bahadur et al.,
Environmental Science and Technology, 2010.



Emily Effner 2008-2009


Emily was an undergraduate at UCSD receiving a B.S. in Environmental Systems - Environmental Chemistry in June 2009, and had already completed her B.A. in Anthropological Archaeology and an internship with SIO's Geology Dept doing isotopic studies of coral cores. She worked as the website designer and manager for Lynn Russell's group until 2010.



Meehye Lee 2006-2007


Meehye Lee is a professor of Earth and Environmental Sciences at the Korea University in South Korea. She was a visiting scholar in the Russell group from 2006 through 2007. Her work included measurements by FTIR for samples collected on Jeju Island, Korea.  
 



Amewu Mensah 2005-2006


Amewu Mensah visited the Russell group to learn about atmospheric aerosols from 2005 to 2006, during her first year of graduate studies on nucleation theory at the University of Cologne. She is now continuing her graduate studies at Julich, where she has switched her research focus to experimental observations of biogenic secondary organic aerosols.

Russell et al., 2007Journal of Geophysical Research, 2007.



Alice Delia 2004-2005

Alice was a post-doctoral researcher with the Atmospheric Aerosols Group.  She received her Ph.D. from the University of Colorado in May 2004, where her research focused on field results using an Aerodyne Aerosol Mass Spectrometer to measure the size and chemical composition of submicron non-refractory aerosols.  She collected filter samples as part of the International Consortium for Atmospheric Research on Transport and Transformation (ICARTT) in July and August 2004 at Appledore Island and Chebogue Point.

Steven Maria 1999-2004

Steve completed his PhD in 2004 and is now a consulting engineer at a defense contractor in New Jersey. His research focused on the characterization of atmospheric organic particulate matter using new aerosol-specific calibrations for FTIR spectroscopy technique. FTIR analysis can quantify organic alkane, alkene, aromatic, alcohol, carbonyl, sulfur, and nitrogen groups, allowing for estimates of total organic carbon (OC) and total organic mass (OM) bulk submicron aerosol concentrations. The resulting OM/OC ratios provide an improved estimate of the conversion factor used to convert from the widely-used thermal-optical OC measurements to total OM.
 
Maria, Characterization and Quantification of Atmospheric Organic Particulate Matter, 2004. (thesis)
Maria et al., Atmospheric Environment, 2002.
Maria et al., Journal of Geophysical Research, 2003.
Maria et al., Science, 2004.
Bates et al., Journal of Geophysical Research, 2004.
Maria and Russell, Environmental Science & Technology, 2005.

Cynthia Randles 2001-2004
Geophysical Fluid Dynamics Laboratory
NOAA
Princeton, NJ


Cynthia is now a postdoctoral scholar at NASA Goddard in Maryland. She studied the direct effect of atmospheric aerosols (i.e. scattering & absorption of light by aerosol particles) with an emphasis on organic aerosols. In particular, she is interested in how the presence of organics within an aerosol particle can change the particle's hygroscopicity (or, it's ability to take up water), and thus alter the optical (scattering & absorption) properties of the aerosol.

Randles et al., Geophysical Research Letters, 2004.



Elizabeth Singh 2001-2004

Elizabeth is now an engineer for Dupont Corporation in Deleware. Her research focused on characterizing the size and sodium mass of sea-salt aerosols. The majority of sea salt aerosols are created by bubbles bursting at the ocean's surface. She has created a bubble generator to simulate this aerosol formation under laboratory conditions. After the aerosols are generated, they go into a salt particle counter (SPC) to characterize the sea-salt. The SPC consists of a differential mobility analyzer (DMA) to separate the particles according to their electrical mobility, a condensation particle counter (CPC) to count how many particles are in each size class, and a flame photometric detector (FPD) to thermally dissociate the aerosols to determine their sodium mass concentration. Her experimental setup looks at particles in the size range of 0.01 - 0.30 um.

Singh, Bond Number Dependence of Particle Production from Bubble Bursting, 2004. (thesis)
Russell and Singh, Aerosol Science and Technology, 2006.


Yi Ming 1998-2003

Yi completed his PhD in 2003 and is now a research scientist at NOAA GFDL in New Jersey. Her research work focused on the thermodynamics of aerosol particles with an emphasis on modeling the organic compounds present in aerosols. He studied the hygroscopic growth behaviors of aerosol particles with the Princeton Organic-Electrolyte Model (POEM) jointly developed with Prof. Russell. This model helped him to understand the radiative properties of aerosols in the global climate model.
 
Ming Yi's website: www.gfdl.noaa.gov/~yim, and his most recent award viewable at: 2007 Presidential Award for Early Career Scientists and Engineers. (congradulations!!)  

Ming and Russell, Journal of Geophysical Research, 2001.
Prenni et al., Journal of Physical Chemistry A,   2001.
Ming and Russell, Environmental and Energy Engineering, 2002.
Russell and Ming, Journal of Chemical Physics, 2002.
Ming, Thermodynamic Equilibrium of Organic Aerosols in the Atmosphere, 2003. (thesis)
Ming et al., Journal of Geophysical Research, 2005.
Ming et al., Review of Geophysics, 2005.


Monica Rivera 2000-2003

Monica is now a consulting engineer at a defense contractor in New Jersey. Monica took part in two field projects, ACE-Asia and DYCOMS II. She collected aerosol samples on teflon filters using particle concentrators, then used FTIR spectroscopy to characterize their organic compostion.

Rivera, Organic Functional Group and Elemental Quantification of ACE-ASIA Submicron Aerosol Aboard the Research Vessel Ronald H. Brown, 2004. (thesis)


Kelly Kuhns-Kobland 2001-2003

Kelly used local aerosol characterization data to investigate the effects of aerosol dynamics on particulate matter in the human respiratory tract. This information, in conjunction with medical studies, provided us with insight into the health effects of inhaling various New Jersey particulate matter.

Kuhns, Hygroscopic Growth of Organic Particles in the Human Respiratory Tract, 2003. (thesis)


Ana Tresmondi 2001-2002

Ana is now a research scientist at University of Campinas in Brazil. She did an internship with the Aerosol Group while she was a PhD student at the University of Campinas, Brazil. She used a receptor model (factor analysis) on the collected by this group in the ACE-Asia project to find the main aerosol types indicated by the measurements of elemental composition.


Prof. Carynelisa Erlick 1997-1999
The Institute of Earth Sciences
The Hebrew University of Jerusalem

http://www.earth.huji.ac.il/staff-main.asp?id=193


Caryn is now a professor at the Hebrew University in Israel. She was a postdoctural scholar in the aerosol group from 1997 to 2000. She is currently Senior Lecturer teaching classes in radiative transfer in the atmosphere, enviromental chemistry, and environmental remote sensing.

Schmeling et al., Tellus B, 2000
Erlick et al., Journal of Geophysical Research, 2001.
Erlick et al., Journal of Geophysical Research, 2006


Assistant Prof. Tim Garrett 2000-2002
Depatartment of Meteorology
University of Utah


Tim was a postdoctoral scholar in the aerosol group from 2000 to 2002. His current group focuses on using airborne observations to understand how small-scale cloud processes are important to climate. Current topics include the effects of pollution on the radiative properties of clouds, and the interactions between dynamics, radiation, and microphysics within tropical cirrus.
 
Garrett et al., Journal of Geophysical Research, 2003.