College Links
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Research Links
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Selected Publications
Research Links
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Magee et al 2011 |
Magee and Kavic 2011 |
Magee et al 2006 |
Magee et al 2000 |
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Experimental Cloud Physics Laboratory
The College of New Jersey
magee@tcnj.edu
Welcome to the cloud
physics lab. Please take a few minutes to explore the
innovative work that has been conducted by our TCNJ students.
If you are a current or prospective TCNJ student, exciting research
opportunities are available, so please do not hesitate to contact
me.
Research Topics and Techniques
Ice Crystal ESEM Nanoanalysis: In
collaboration with the Princeton University Imaging and Analysis
Center we are using Environmental Scanning Electron Microscopy
to take some of the highest magnification, highest-resolution images
and movies of ice crystals ever recorded. Take a look at our videos
on vimeo
Spectroscopic In-Situ Ellipsometery:
With the help of a grant from the Research Corporation, our lab is
now equipped with a state-of-the-art Horiba Inc. Ellipsometer to
make measurements of thin films with precision of less than 1 nm.
We are in the process of perfecting ice growth in the ellipsometer
chamber in order to study surface nanostructures of ice films.
Acoustic Raindrop Distrometer: We're working on an
building and testing an inexpensive device that can electronically measure
and sort raindrop sizes by "listening" to the sound of drop impacts using a
piezoelectric pickup. The distribution of drop sizes plays an
important role in calibrating radar reflectivity with a real rainfall rate.
Our prototype system meaured more than 8000 raindrop sizes in one minute
during a Hurricane Sandy squall.
Remote sensing analysis of overshooting tops in Tornadic
Supercells: TCNJ students are analyzing speciality high
resolution radar and satellite data in an attempt to better understand the
dynamics of supercell thunderstorms around the instant of tornado formation.
We are aiming to provide research that would contribute to increased
effectiveness of NWS tornado warnings.
Ice Crystal Optical Microphotography:
An Olympus stereomicroscope, digital photography, and custom-built
cold-stage are used to photograph natural and lab-grown ice
crystals. Analysis of these images promises to answer several
open questions about ice crystal morphology and growth
characteristics. Also, they are pretty.
Multi-crystal dendritic snowflake, partly
melted. Captured at TCNJ during early snow shower, October 28,
2008. |
Olympus SZ-60 and SCION firewire CCD |
Electrodynamic Levitation: High AC voltages are applied to
a symmetric electrode geometry, resulting in an electric field that traps a
charged particle along the central axis of the levitation cell. Water
droplets and ice crystals can be levitated for hours on end. The
properties of the particles are then probed in an effort to refine our
understanding of how cloud particles respond to varied conditions of ambient
temperature, humidity, and pressure.
Quadrupole levitation cell built in
physics machine shop by
physics major, John Beatty. |
High voltage, 4 channel, variable frequency AC power supply
Custom electronics equipment on loan from Penn State |
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Research Assistants
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Kayla Spector
John Lenehan
Joe Grippaldi
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Former Assistants
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Andrew Miller ('15)
Marco Amaral ('14)
Adam Cumiskey ('13)
Maggie Fuller ('13)
Melissa Jardel ('12)
Mike Wijkowski ('14)
Rachel Goldberg ('14)
Megan Hartline ('13)
Rachel Sherman ('09)
John Beatty ('11)
Cindy Lin ('11)
Corey Tong ('10)
John Lenehan ('13)
Joe Grippaldi ('12)
Kayla Spector ('13)
Brianna Carrol ('09)
David Uhrich ('09)
Irene Ning ('09)
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Research Posters
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AGU 2012
Ice growth in ESEM
Diffusion Chamber
Tornado Overshoot Tops
AGU 2011
Ice Ellipsometry
Tornados from A-Train
AGU 2009
Cirrus nucleation
MUSE summer posters
Lin
Grippaldi
Lenehan
Spector
Goldberg
Cumiskey
Miller
Hartline
Semester project posters
Jardel
Cumiskey
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