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National Aeronautics and Space Administration Jet Propulsion Laboratory
California Institute of Technology
Cryospheric Sciences Program: Tools for managing a scarce resource.
JPL Cryo People
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The contributions to NASA's Cryospheric Sciences program from researchers at the Jet Propulsion Laboratory, California Institute of Technology, include:


Alberto Behar Alberto Behar

Alberto Behar’s primary interests are developing, testing and deploying architectures for future planetary surface spacecraft in remote extreme environments on Earth. He has developed in-situ instrumentation to study ice flows in Greenland and Antarctica. He is currently building a high definition video camera system for use in the Antarctic Pine Island Glacier Field Project.

Further formation at http://www-robotics.jpl.nasa.gov/people/Alberto_Behar/.

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Ben Holt Ben Holt

Ben Holt’s research interests focus on deriving sea ice thickness and snow depth from multi-sensor satellite and aircraft instrumentation. He is slowly but surely assembling a historical archive of in situ sea ice thickness and snow measurements. He is currently on the science definition team for the DESDynI SAR mission.

Further information at http://science.jpl.nasa.gov/people/Holt.

Erik Ivins Erik Ivins

Erik Ivins’ research interests include modeling elastic and viscous flow of the solid earth's deformation field; use of time-variable space gravity, GPS and altimetry for monitoring cryospheric change, postglacial rebound and sea level change. He leads the NASA participation in the IMBIE effort to use data from relevant space missions to constrain mass balance of the ice sheets (radar and laser altimetry, InSAR velocity mapping, GRACE space gravimetry). A paper for Science summarizes the results of the inter-comparison performed in 26 institutions and 7 countries.

Further information at http://science.jpl.nasa.gov/people/Ivins.

Ala Khazendar Ala Khazendar

Ala Khazendar’s research interests are ice shelves and floating termini in Antarctica and Greenland: their structure and flow, interaction with the ocean and factors leading to their destabilization. He applies methods that combine analyzing remote sensing data (IceBridge, ICESat, InSAR) with numerical modeling of ice flow or ice-ocean interactions.

Further formation at https://radar.jpl.nasa.gov/people/index.cfm?FuseAction=ShowPerson&pplID=33.

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Ron Kwok Ron Kwok

Ron Kwok is a Senior Research Scientist whose research interests include the mass and energy balance of the Arctic and Southern Ocean ice cover, and the role of the sea ice in global climate. His current focus is on the analysis of thickness, small-scale sea ice kinematics, time varying gravity from various spaceborne and airborne remote sensing instruments.

Further information at http://rkwok.jpl.nasa.gov.

Eric Larour Eric Larour

Eric Larour is the Project lead and co-developer of ISSM (Ice Sheet System Model), a collaboration between JPL and the Univ. California-Irvine to project the mass balance of Antarctica and Greenland in the next century. Interested in ice sheet modeling, sensitivity studies and data assimilation methods to improve transient simulations of ice flow, with the goal of projecting sea level rise in a changing climate.

Further information at http://issm.jpl.nasa.gov.

Dimitris Menemenlis Dimitris Menemenlis

Dimitris Menemenlis is a member of the Estimating the Circulation and Climate of the Ocean (ECCO) consortium. He was JPL technical lead of ECCO2, and he leads the follow-on ECCO-Ice (Ocean-Ice Interactions in Earth System Models) project, which aims to develop coupled ocean, sea-ice, and ice sheet data assimilation capabilities toward enabling firmer links between polar observations, understanding, and prediction.

Further information at http://ecco2.org.

Son V. Nghiem Son V. Nghiem

Son V. Nghiem is a Senior Research Scientist whose interests include impacts of Arctic sea ice reduction on atmospheric chemical processes (bromine explosion, ozone depletion, and mercury deposition), the surface melt of the Greenland Ice sheet, and Arctic sea ice applications using L-band radar data relevant to DESDynI SAR/Interferometric SAR characteristics.

Further formation at https://radar.jpl.nasa.gov/people/index.cfm?FuseAction=ShowPerson&pplID=12.

Further information at http://www.jpl.nasa.gov/news/news.php?release=2012-054 and http://www.nasa.gov/topics/earth/features/greenland-melt.html.


Eric Rignot Eric Rignot

Eric Rignot is a Senior Research Scientist at JPL and Professor of Earth System Science at the Univ. of California Irvine. His research interests include the interactions of ice and climate, the evolution of the Greenland and Antarctic ice sheets, submarine melting of the calving faces of glaciers, and the use of interferometric radar and other data to elucidate those processes.

Further information at http://ess.uci.edu/researchgrp/erignot/home.

Isabella Velicogna Isabella Velicogna

Isabella Velicogna is a JPL scientist and Assistant Professor of Earth System Science at the Univ. of California Irvine, whose research interests include the use of geodetic data, including GRACE, to study the mass of the Greenland and Antarctic ice sheets, the response of high latitude regions to climate worming.

Further information at http://www.ess.uci.edu/lab/isabella.

Xiaoping Frank Wu Xiaoping Frank Wu

Xiaoping Frank Wu’s interests include estimation of present-day seasonal, interannual, secular and historical ice mass variations over Greenland and Antarctica and their sea level contributions, combining multi-satellite geodetic, historical relative sea level (RSL), and glacio-geological data through global inverse algorithms. Also, to improve the International Terrestrial Reference Frame, which is a fundamental datum for global monitoring.

Further formation at http://scienceandtechnology.jpl.nasa.gov/people/x_wu/.

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Xiaoqing Wu Xiaoqing Wu

Xiaoqing Wu’s interests include high resolution ice sheet bedmapping of Greenland and Antarctica with tomographic sounding with the goal to produce bedmaps of most polar regions covered by NASA IceBridge mission.

Further formation at http://radar.jpl.nasa.gov/people/index.cfm?FuseAction=ShowPerson&pplID=125.

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