Principal Investigators

walden's picture Von Walden
Washington State University

Dr. Von P. Walden is a Professor of Civil and Environmental Engineering and a member of the Laboratory for Atmospheric Research at Washington State University.
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He received a B.S. in Physics from Utah State University and a M.S. and Ph.D. in Geophysics from the University of Washington. Dr. Walden's research interests include polar meteorology and remote sensing of the polar atmosphere. He has also worked on understanding climate change in the western U.S. He has conducted eight field experiments in Antarctica and the Arctic, including a current deployment at Summit Station, Greenland as part of NSF’s Arctic Observing Network. Dr. Walden served on NASA’s Validation Team for the Atmospheric Infrared Sounder (AIRS) from 2001 to 2008. He is currently on the Steering Committee for the International Arctic Systems for Observing the Atmosphere (IASOA) and is leading the Surface Radiation Working Group. At Washington State University, Dr. Walden teaches courses in atmospheric radiative transfer, remote sensing, and fluid mechanics.
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shupe's picture Matthew Shupe
Cooperative Institute for Research in Environmental Science (CIRES) University of Colorado
NOAA Earth System Research Laboratory (ESRL)

Matthew studies clouds, cloud processes, cloud-radiation interactions, and the interplay of clouds with the atmospheric boundary layer and surface.
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His recent foci are on mixed-phase clouds and atmospheric forcing of Arctic sea-ice and ice sheets. Most of this work entails combining measurements from sophisticated suites of ground-based remote sensors to characterize detailed cloud microphysical, radiative, and dynamical properties, as well as related features of the atmospheric structure and surface properties. Recent efforts have worked to link these detailed observations with process modeling to further elucidate processes responsible for cloud phase partitioning and maintenance. Matthew has been engaged in Arctic research for his whole career, getting his start at the Surface Heat Budget of the Arctic Ocean (SHEBA) experiment on an ice breaker in 1997. Since that time, Matthew has been involved in numerous observational activities in Alaska, northern Canada, Greenland, and the central Arctic sea ice. He is currently championing a new activity called MOSAiC (the Multi-disciplinary drifting Observatory for the Study of Arctic Climate), that will involve year-round, inter-disciplinary measurements from a drifting ship within the Arctic ice pack. Matthew's research support comes from the National Science Foundation, Department of Energy, and National Oceanic and Atmospheric Administration. Matthew oversees the ICECAPS cloud radar, POSS, radiosondes, hotplate, and sodar, as well as the data management and archival system.
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turner's picture Dave Turner
University of Oklahoma
NOAA National Severe Storms Laboratory (NSSL)

Dave is an observationalist and an atmospheric physicist. He uses a wide variety of in-situ and remote sensing techniques to characterize, understand, and quantify processes that occur in the atmosphere.
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In particular, Dave works with state-of-the-art remote sensors such as an automated water vapor and aerosol Raman lidar, Doppler lidar, Atmospheric Emitted Radiance Interferometer, multi-frequency microwave radiometer, and millimeter-wave cloud radar in his research. Dave utilizes observations from these and other more traditional instruments, typically in synergistic fashion, to gain insight into such topics as evolution of the boundary layer's turbulent structure; shallow convective cloud processes; the interaction between clouds, aerosols, radiation, precipitation, and the thermodynamic environment in the boundary layer; mixed-phase clouds; radiative transfer in the atmosphere; and other topics. Additionally, Dave has led and been involved with numerous feild campaigns, such as M-PACE, RHUBC-I and II, prior to ICECAPS. Dave is the instrument lead for the MPL, the HATPRO and HF MWRs, and the ceilometer as well as developing the retrievals for the PWV and LWP values.
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Ralf Bennartz
Vanderbilt University
University of Wisconsin - Madison, Space Science and Engineering Center (SSEC)

Ralf's research focuses on the role of water vapor, clouds, and precipitation in the climate system with an emphasis on their link to radiation processes.

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Currently, not much is known about changes in cloud amount, cloud type, or precipitation, and the international community is in dire need of climatologically relevant cloud and precipitation observations to gain a better understanding of the processes involved in climate change and of how human activities influence these processes. Remote sensing observations of the Earth system can in part serve as a means of understanding these complex processes. Indeed, such observations have already become a crucial input to numerical weather prediction models and also provide comprehensive data sets to study climate. Ralf's research combines the development of instrumentation and algorithms, the analysis of remote sensing observations observations, and the development of new models and methods to simulate atmospheric radiative transfer. Ralf has added a MASC instrument to the ICECAPS suite in 2014 to observe and characterize ice habits and particle size distributions.
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Co-Investigators

cavallo's picture Steven Cavallo
Associate Professor
University of Oklahoma
School of Meteorology
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neff's picture Bill Neff
Senior Research Scientist
Cooperative Institute for Research in Environmental Science (CIRES) University of Colorado
NOAA Earth System Research Laboratory (ESRL)
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  Ryan Neely
Lecturer
University of Leeds
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solomons's picture Amy Solomon
Research Scientist III
Cooperative Institute for Research in Environmental Science (CIRES) University of Colorado
NOAA Earth System Research Laboratory (ESRL)
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Scientific Staff

cox's picture Chris Cox
Research Scientist I
Cooperative Institute for Research in Environmental Science (CIRES) University of Colorado
NOAA Earth System Research Laboratory (ESRL)
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  Duane Hazen
Engineer
Cooperative Institute for Research in Environmental Science (CIRES) University of Colorado
NOAA Earth System Research Laboratory (ESRL)
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  Mark Kulie
Associate Researcher
University of Wisconsin - Madison, Space Science and Engineering Center (SSEC)
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merrelli's picture Aronne Merrelli
Associate Researcher
University of Wisconsin - Madison, Space Science and Engineering Center (SSEC)
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  Erik Olson
Researcher
University of Wisconsin - Madison, Space Science and Engineering Center (SSEC)
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pettersen's picture Claire Pettersen
Associate Instrumentation Innovator
University of Wisconsin - Madison, Space Science and Engineering Center (SSEC)
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Current and Former Students

  Shima Bahramvash-Shams
Graduate Student
Washington State University - Civil and Environmental Engineering Department
PhD Advisor: Von Walden
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' picture Sarah Borg
Graduate Student
University of Oklahoma - School of Meteorology
Advisor: Dave Turner/Steven Cavallo
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  Ben Castellani
Graduate Student
Cooperative Institute for Research in Environmental Science (CIRES) University of Colorado
Advisor: Matthew Shupe
Graduated with MS in 2014
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  Chris Cox
Graduate Student
University of Idaho - Geography Department
Advisor: Von Walden
Graduated with PhD in 2013
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edwards' picture Jonathan Edwards
Graduate Student
University of Oklahoma
Advisor: Dave Turner/Steven Cavallo
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  Marty Martinez
Graduate Student
Vanderbilt University
MS Advisor: Ralf Bennartz
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miller's picture Nathaniel Miller
Graduate Student
Cooperative Institute for Research in Environmental Science (CIRES) University of Colorado
MS Advisor: Dave Turner
Graduated with MS in 2012
Graduated with PhD in 2017
PhD Advisor: Matthew Shupe
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  Sarah Murphy
Graduate Student
Washington State University - Civil and Environmental Engineering Department
MS Advisor: Von Walden
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  Claire Pettersen
Graduate Student
University of Wisconsin - Madison
MS Advisor: Ralf Bennartz
Graduated with MS in 2014
PhD Advisor: Grant Petty
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row's picture Mallory Row
Graduate Student
University of Oklahoma
Advisor: Dave Turner/Steven Cavallo
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  Robert Stillwell
Graduate Student
Cooperative Institute for Research in Environmental Science (CIRES) University of Colorado
Graduated with PhD in 2017
Advisor: Jeff Thayer
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  Michael Stone
Graduate Student
Cooperative Institute for Research in Environmental Science (CIRES) University of Colorado
Advisor: Matthew Shupe
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willmot's picture Elena Willmot
Graduate Student
University of Wisconsin - Madison
Graduated with MS in 2014
Vanderbilt University
Advisor: Ralf Bennartz
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Field Technicians

2010-2011 Winter Phase I Matt Okraszewski
2010-2011 Winter Phase II Lance Roth
2010-2011 Winter Phase III Chris Cox
2011 Summer Phase Aronne Merrelli/Nate Miller
2011-2012 Winter Phase I Brad Halter
2011-2012 Winter Phase II Tom Cox
2011-2012 Winter Phase III Claire Pettersen
2012 Summer Phase Patrick Wright/Kevin Hammonds
2012-2013 Winter Phase I Patrick Wright
2012-2013 Winter Phase II Lance Roth
2013 Phase I (Spring) Sven Lidstrom
2013 Phase II (Autumn) Ben Castellani/Elena Willmot/Lana Cohen
2013 Phase III (Winter) John Lyons
2014 Phase I (Spring) Ward Handley
2014 Phase II (Autumn) Lana Cohen
2014 Phase III (Winter) Jennie Mowatt
2015 Spring Sam Dorsi
2015 Summer Sam Dorsi
2015 Autumn Clair Von Handorf
2015 Winter Michael Finnegan
2016 Spring Sam Dorsi
2016 Summer Hannah James
2016 Autumn Travis and Alyssa