Ian Joughin
Senior Principal Engineer
Affiliate Professor, Earth and Space Sciences
ian@apl.uw.edu
Phone
206-221-3177
Biosketch
Ian Joughin continues his pioneering research into the use of differential SAR interferometry for the estimation of surface motion and topography of ice sheets. He combines the remote sensing with field work and modeling to solve ice dynamics problems. Solving the problems helps him understand the mass balance of the Greenland and Antarctic Ice Sheets in response to climate change.
In addition to polar research, he also contributed to the development of algorithms that were used to mosaic data for the near-global map of topography from the Shuttle Radar Topography Mission (SRTM).
Education
B.S. Electrical Engineering, University of Vermont, 1986
M.S. Electrical Engineering, University of Vermont, 1990
Ph.D. Electrical Engineering, University of Washington, 1995
Videos
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A Response to "Catastrophic" Sea Level Rise Headlines |
28 Jul 2015
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Clocking Greendland's Glaciers: Ice-sheet-wide velocity mapping |
5 Dec 2013
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Publications |
2000-present and while at APL-UW |
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Ocean-induced melt volume directly paces ice loss from Pine Island Glacier |
22 Oct 2021
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icepack: A new glacier flow modeling package in Python, version 1.0 |
26 Jul 2021
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Ice-shelf retreat drives recent Pine Island Glacier speedup |
11 Jun 2021
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Observing traveling waves in glaciers with remote sensing: new flexible time series methods and application to Sermeq Kujalleq (Jakobshavn Isbræ), Greenland |
28 Jan 2021
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Brief communication: Heterogenous thinning and subglacial lake activity on Thwaites Glacier, West Antarctica |
18 Dec 2020
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Toward a universal glacier slip law |
3 Apr 2020
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Mass balance of the Greenland Ice Sheet from 1992 to 2018 |
12 Mar 2020
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A decade of variability on Jakobshavn Isbræ: ocean temperatures pace speed through influence on mélange rigidity |
24 Jan 2020
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Melt at grounding line controls observed and future retreat of Smith, Pope, and Kohler glaciers |
5 Nov 2019
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Ice shelf basal melt rates from a high-resolution digital elevation model (DEM) record for Pine Island Glacier, Antarctica |
10 Oct 2019
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Measuring height change around the periphery of the Greenland Ice Sheet with radar altimetry |
11 Jun 2019
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Regularized Coulomb friction laws for ice sheet sliding: Application to Pine Island Glacier, Antarctica |
16 May 2019
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Greenland Ice Mapping Project: Ice flow velocity variation at sub-monthly to decadal timescales |
11 Jul 2018
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Evolving environmental and geometric controls on Columbia Glacier's continued retreat |
1 Jul 2018
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Ice velocity of Jakobshavn Isbrae, Petermann Glacier, Nioghalvfjerdsfjorden, and Zachariae Isstrøm, 2015–2017, from Sentinel 1-a/b SAR imagery |
18 Jun 2018
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Intercomparison and validation of SAR-based ice velocity measurement techniques within the Greenland Ice Sheet CCI project |
12 Jun 2018
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Ionospheric correction of InSAR data for accurate ice velocity measurement at polar regions |
1 May 2018
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GPS-derived estimates of surface mass balance and ocean-induced basal melt for Pine Island Glacier ice shelf, Antarctica |
21 Nov 2017
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Increased ice flow in Western Palmer Land linked to ocean melting |
16 May 2017
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Drainage of southeast Greenland firn aquifer water through crevasses to the bed |
7 Feb 2017
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Englacial latent-heat transfer has limited influence on seaward ice flux in western Greenland |
1 Feb 2017
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Greenland Ice Sheet flow response to runoff variability |
16 Nov 2016
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Sensitivity of Pine Island Glacier to observed ocean forcing |
28 Oct 2016
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Antarctic firm compaction rates from repeat-track airborne radar data: I: Methods |
1 Oct 2015
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Greenland supraglacial lake drainages triggered by hydrologically induced basal slip |
4 Jun 2015
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Seismicity on the western Greenland Ice Sheet: Surface fracture in the vicinity of active moulins |
1 Jun 2015
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Seasonal to multiyear variability of glacier surface velocity, terminus position, and sea ice/ice melange in northwest Greenland |
13 May 2015
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Limits to future expansion of surface-melt-enhanced ice flow into the interior of western Greenland |
28 Mar 2015
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Seasonal and interannual variations in ice melange and its impact on terminus stability, Jakobshavn Isbrae, Greenland |
1 Feb 2015
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Marine ice sheet collapse potentially underway for the Thwaites Glacier Basin, West Antarctica |
16 May 2014
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Further speedup of Jakobshavn Isbrae |
3 Feb 2014
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Tropical Pacific influence on the source and transport of marine aerosols to West Antarctica |
1 Feb 2014
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Pine Island glacier ice shelf melt distributed at kilometre scales |
26 Sep 2013
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Future sea-level rise from Greenland's main outlet glaciers in a warming climate |
8 May 2013
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Recurring dynamically induced thinning during 1985 to 2010 on Upernavik Isstrøm, West Greenland |
1 Mar 2013
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Ice sheet record of recent sea ice behavior and polynya variability in the Amundsen Sea, West Antarctica |
1 Jan 2013
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A reconciled estimate of ice-sheet mass balance |
30 Nov 2012
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Ice-sheet response to oceanic forcing |
30 Nov 2012
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Seasonal to decadal scale variations in the surface velocity of Jakobshavn Isbrae, Greenland: Observation and model-based analysis |
25 May 2012
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21st-century evolution of Greenland outlet glacier velocities |
4 May 2012
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Modeling ice-sheet flow |
4 May 2012
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Constraining ice mass loss from Jakobshavn Isbrae (Greenland) using InSAR-measured crustal uplift |
1 Mar 2012
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Oceanic controls on the mass balance of Wilkins Ice Shelf, Antarctica |
20 Jan 2012
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Warming of waters in an East Greenland fjord prior to glacier retreat: Mechanisms and connection to large-scale atmospheric conditions |
9 Sep 2011
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Seasonal speedup of a Greenland marine-terminating outlet glacier forced by surface melt-induced changes in subglacial hydrology |
23 Aug 2011
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Stability of the West Antarctic ice sheet in a warming world |
24 Jul 2011
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Changes in the dynamics of marine terminating outlet glaciers in west Greenland (2000-2009) |
23 Jun 2011
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The propsed DESDynI mission - From science to implementation |
23 May 2011
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Seasonal speedup of the Greenland Ice Sheet linked to routing of surface water |
1 Feb 2011
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GPS measurements of crustal uplift near Jakobshavn Isbrae due to glacial ice mass loss |
16 Sep 2010
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Greenland flow variability from ice-sheet-wide velocity mapping |
1 Aug 2010
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Synthesizing multiple remote-sensing techniques for subglacial hydrologic mapping: Application to a lake system beneath MacAyeal Ice Stream, West Antarctica |
1 Jun 2010
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An inventory of active subglacial lakes in Antarctica detected by ICESat (2003-2008) |
1 Sep 2009
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Constraints on the lake volume required for hydro-fracture through ice sheets |
16 May 2009
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Basal conditions for Pine Island and Thwaites glaciers, West Antarctica, determined using satellite and airborne data |
1 Apr 2009
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Greenland ice sheet motion coupled with daily melting in late summer |
7 Jan 2009
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A simple law for ice-shelf calving |
28 Nov 2008
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Continued evolution of Jakobshavn Isbrae following its rapid speedup |
28 Oct 2008
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Rates of southeast Greenland ice volume loss from combined ICESat and ASTER observations |
9 Sep 2008
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Changes in ice front position on Greenland's outlet glaciers from 1992 to 2007 |
7 Jun 2008
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Fracture propagation to the base of the Greenland ice sheet during supraglacial lake drainage |
9 May 2008
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Seasonal speedup along the western flank of the Greenland ice sheet |
9 May 2008
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Ice-front variation and tidewater behavior on Helheim and Kangerdlugssuaq Glaciers, Greenland |
26 Jan 2008
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Numerical modeling of ocean-ice interactions under Pine Island Bay's ice shelf |
19 Oct 2007
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Rapid response of modern day ice sheets to external forcing |
15 May 2007
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Rapid changes in ice discharge from Greenland outlet glaciers |
16 Mar 2007
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Large subglacial lakes in East Antarctica at the onset of fast-flowing ice streams |
22 Feb 2007
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East Antarctic ice stream tributary underlain by major sedimentary basin |
1 Jan 2006
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Rapid retreat and acceleration of Helheim Glacier, east Greenland |
22 Nov 2005
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Continued deceleration of Whillans Ice Stream, West Antarctica |
17 Nov 2005
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Ice-sheet and sea-level changes |
21 Oct 2005
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Marine ice modification of fringing ice shelf flow |
30 Aug 2005
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Subglacial conditions during and after stoppage of an Antarctic Ice Stream: Is reactivation imminent? |
20 Jul 2005
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Rheology of the Ronne Ice Shelf, Antarctica, inferred from satellite radar interferometry data using an inverse control method |
8 Mar 2005
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Evidence for subglacial water transport in the West Antarctic ice sheet through three-dimensional satellite radar interferometry |
8 Feb 2005
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Calving of large tabular icebergs from ice shelf rift systems |
21 Jan 2005
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Large fluctuations in speed on Greenland's Jakobshavn Isbrae glacier |
2 Dec 2004
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Basal shear stress of the Ross ice streams from control method inversions |
24 Sep 2004
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Ice flow direction change in interior West Antarctica |
24 Sep 2004
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In The News
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Why a mighty Antarctic glacier is purging ice into the sea Mashable, Mark Kaufman |
22 Jun 2021
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Edge of Pine Island Glacier’s ice shelf is ripping apart, causing key Antarctic glacier to gain speed UW News, Hannah Hickey |
11 Jun 2021
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Ice shelf protecting Antarctic glacier is breaking up faster Associated Press, Seth Borenstein |
11 Jun 2021
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Antarctic'as ice sheet is melting 3 times faster than before Associate Press, Seth Borenstein |
14 Jun 2018
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Hidden lakes drain below West Antarctica's Thwaites Glacier UW News and Information, Hannah Hickey |
8 Feb 2017
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Satellite system tracks glaciers' flow in real time Nature News, Jeff Tollefson |
16 Dec 2016
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RIft in Pine Island glacier points to a coming, broader collapse Mashable, Maria Gallucci |
28 Nov 2016
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UW has 29 faculty on list of ‘highly cited researchers’ for 2016 UW News and Information |
22 Nov 2016
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John Kerry just visited the most stunning example of our changing climate The Washington Post, Chris Mooney |
19 Jun 2016
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We've been getting these key details about Greenland’s melting all wrong Washington Post, Chelsea Harvey |
1 Apr 2016
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With collapsing West Antarctica, sea level rise may be twice as high as we thought Mashable, Andrew Freedman |
31 Mar 2016
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The secrets in Greenland's Ice Sheet New York Times Magazine, Jon Gertner |
12 Nov 2015
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Is Antarctica losing ice or gaining it? Scientific American, Malavika Vyawahare |
5 Nov 2015
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What Antarctica's incredible "growing" icepack really means National Geographic, Brian Clark Howard |
3 Nov 2015
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Antarctic melting irreversible in 60 years Discovery News, Eric Niiler |
2 Nov 2015
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Scientists declare an 'urgent' mission — study West Antarctica, and fast Washington Post, Chris Mooney |
29 Sep 2015
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Two UW researchers elected AGU fellows UW News and Information, Hannah Hickey |
29 Jul 2015
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Prediction of rapid sea level rise won't change global climate talks National Geographic, Brian Clark Howard |
21 Jul 2015
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Greenland's glaciers are accelerating so fast, they have stretch marks Slate, Eric Holthaus |
14 May 2015
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The big melt: Antarctica's retreating ice may re-shape Earth ABC News, LUIS ANDRES HENAO and SETH BORENSTEIN, Associated Press |
27 Feb 2015
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Collapse or catastrophe? The Economist |
17 May 2014
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Antarctic ice sheet slipping into the sea National Public Radio: Science Friday, Ira Flatow |
16 May 2014
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Antarctic glaciers melting 'passed point of no return' USA Today, Traci Watson |
13 May 2014
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New study: Glacial collapse in Antarctica 'unstoppable' KUOW Radio, Steve Scher, Ashley Ahearn, and Posey Gruener |
13 May 2014
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UW researchers: Polar ice sheet doomed, but how soon? The Seattle Times, Craig Welch |
13 May 2014
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Antarctic glacier loss is 'unstoppable,' study says Time, Bryan Walsh |
12 May 2014
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Irreversible collapse of Antarctic glaciers has begun, studies say Los Angeles Times, Scott Gold |
12 May 2014
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Melting of Antarctic ice sheet might be unstoppable National Public Radio, Scott Neuman |
12 May 2014
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NASA spots worrisome Antarctic ice sheet melt The Washington Post |
12 May 2014
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Scientists warm of melting ice sheet, rising sea level The Wall Street Journal, Robert Lee Hotz |
12 May 2014
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Scientists warn of rising oceans from polar melt The New York Times, Justin Gillis and Kenneth Chang |
12 May 2014
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Studies: Seas to rise up to 10 feet from 'unstoppable' glacier melt U.S. News and World Report, Alan Neuhauser |
12 May 2014
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West Antarctic glacier loss: 'We have passed the point of no return' Christian Science Monitor, Pete Spotts |
12 May 2014
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West Antarctic ice sheet collapse is under way UW News and Information, Hannah Hickey |
12 May 2014
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West Antarctic ice sheet's collapse triggers sea level warning NBC News, Alan Boyle |
12 May 2014
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Western Antarctic ice sheet collapse has already begun, scientists warn The Guardian, Suzanne Goldenberg |
12 May 2014
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Antarctic ice may be held in place by small plugs — for now National Geographic Daily News, Larry O'Hanlon |
4 May 2014
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Greenland ice sheet loses its last grip CBS News, Becky Oskin |
17 Mar 2014
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Glacier that sank the Titanic is really on the move, say scientists The Christian Science Monitor, Sudeshna Chowdhury |
4 Feb 2014
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Greenland glacier hits speed record BBC News, Paul Rincon |
4 Feb 2014
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Glacier blamed for berg that sank Titanic unleashes more ice National Public Radio, Richard Harris |
3 Feb 2014
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Greenland's fastest glacier sets new speed record UW News and Information, Hannah Hickey |
3 Feb 2014
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UW researchers mapping changes in glacier ice KING5 News, Seattle, Adam Mertz |
25 Nov 2013
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International study provides more solid measure of shrinking in polar ice sheets UW News and Information, Hannah Hickey |
29 Nov 2012
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Data sheds light on speed of Greenland's glaciers BBC News, Mark Kinver |
4 May 2012
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Greenland ice melt could raise seas less than feared, study says CNN, Matt Smith |
4 May 2012
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Greenland glaciers shrinking quickly, but not worst case The Washington Post (Associated Press) |
3 May 2012
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Greenland's ice melting more slowly than expected NPR 'All Things Considered', RIchard Harris |
3 May 2012
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Increasing speed of Greenland glaciers gives new insight for rising sea level UW Today, Vince Stricherz |
3 May 2012
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Sea-level rise 'may not be as high as worst-case scenarios have predicted' The Guardian, Damian Carrington |
3 May 2012
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Giant Greenland glacier cracks, piece floats off MSNBC, Larry O'Hanlon |
13 Jul 2010
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Scientists step closer to saving the ice shelf USA Today, Michelle Kessler |
28 Nov 2008
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The sober science of migrating rubber duckies Wall Street Journal, Rorbert Lee Hotz |
14 Nov 2008
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Good signs from Greenland's ice sheet National Public Radio, Richard Harris |
17 Apr 2008
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