Ice dynamics from Earth observations
|
|
|
- Clementine George
- 5 years ago
- Views:
Transcription
1 Ice dynamics from Earth observations Twila Moon Bristol Glaciology Centre Geographical Sciences University of Bristol 1
2 When you have mapped the ice sheets once your career will be over because they don t change very quickly. - A well- known glaciologist, circa 1995 ice sheet ocean ice sheet bed 2
3 GF GF GF XYXY N XY ^_ GF GF U XY ") ")XY N XY Velocity (m/yr) 1000 Velocity 10 scale 100 (m/yr)
4 First look at Greenland glacier velocities 15 Jakobshavn Isbræ Velocity (km/yr) 10 5 Up glacier Terminus Distance along glacier (km) [Joughin et al., Nature, 2004] 4
5 First look at Greenland glacier velocities 12 Helheim Glacier Velocity (km/yr) Distance along glacier (km) 40 [Howat et al., GRL, 2005] 5
6 First look at Greenland glacier velocities 14 Kangerdlugssuaq Glacier Velocity (km/yr) Distance along glacier (km) [Howat et al., Science, 2007] 6
7 Rapid speedup in Antarctica [Scambos et al., GRL, 2004] 7
8 Projections for future sea level rise [IPCC 2007] 8
9 Projections for future sea level rise Dynamical processes related to ice flow not included in current models Understanding of these processes is limited and there is no consensus on their magnitude. [IPCC 2007] 9
10 Impacts of ice mass loss 6 m 60 m 10
11 Local to global impacts of ice sheet change 6 m 60 m 11
12 Local to global impacts of ice sheet change 6 m 60 m 12
13 Focus on areas of large, rapid change!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!( !( !(!(!(!(!(!(!(!(!(!(!( GF GF GF!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!( GF XYXY!(!( N XY ^_ GF XYXY XY XY XY GF GF NW U!(!(!(!(!(!( ") XY!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!( ")XY N XY Velocity (m/yr) 1000 Velocity 10 scale 100 (m/yr)
14 A connected ice- ocean system glacier & fjord topography terminus change hydrologic system velocity ice mélange & sea ice fjord & ocean characteristics ice sheet bed & bathymetry 14
15 Multi- year velocity changes changes: 28% speedup 34% speedup 15
16 Widespread retreat (1992/ /10) Terminus change 10+ km retreat 7 to 10 km retreat 4 to 7 km retreat 1 to 4 km retreat Advance/retreat <1 km 1+ km advance [Data available: NSIDC] 16
17 Local variability in space and time 2010 to 2011 Percent annual velocity change [modified from Moon et al., Science, 2012] 17
18 Local variability in space and time 2010 to 2011 Percent annual velocity change [modified from Moon et al., Science, 2012] 18
19 Improving temporal resolution 19
20 Long- term speedup linked to retreat Mean velocity (m/yr) Mean terminus position (m) 20 [Moon et al., JGR, 2015]
21 Seasonal patterns respond to different forcing? Mean velocity (m/yr) Mean terminus position (m) 21 [Moon et al., JGR, 2015]
22 Seasonal terminus change sea ice link Mean terminus position (m) [Moon et al., JGR, 2015] 22
23 Hydrology- induced speedup Distributed and inefficient system Increasingly efficient Efficient and channelized system Ice flow direction [Carr et al., 2013] [Diagrams: I. Hewitt] 23
24 Distinct seasonal velocity patterns Relative measured Relative measured velocity (m/yr) velocity (m/yr) a) Type 1 b) Type 2 c) Type a) Type 1 b) Type 2 c) Type Jan-1 Jul-1 Dec-31 Jan-1 Jul-1 Dec-31 Jan-1 Jul-1 Dec Date of year Runoff (kg m -2 day -1 ) Date of year 24 [Moon et al., GRL, 2014]
25 Velocity linked to terminus change Relative measured velocity (m/yr) a) c) Type 13 b) Type 2 c) Type faster speed spring position -500 Dec-31 Jan-1 Jul-1 Dec Runoff (kg m -2 day -1 ) Date of year [Moon et al., GRL, 2014] 25
26 Velocity linked to subglacial hydrology a) b) Type 12 b) c) Type 23 c) Type 3 + Dec-31 Jan-1 Jul-1 Dec-31 Jan-1 Jul-1 Dec-31 Date of year + Date of year Runoff (kg m -2 day -1 ) [Diagrams: I. Hewitt] [Moon et al., GRL, 2014] 26
27 Velocity linked to subglacialhydrology a) Type 1 b) Type 2 c) Type 3 + Jan-1 Jul-1 Dec-31 Jan-1 Jul-1 Dec-31 Date of year Runoff (kg m -2 day -1 ) [Diagrams: I. Hewitt] 27 [Moon et al., GRL, 2014]
28 Velocity reflecting surface melt changes 2010 & 2012 response 2012 response 28
29 More improvements in space/time measurements Landsat 8 to ice surface velocity (globally). [Fahnestock et al., RSE, 2015] 29
30 Multiple satellites on the task Sentinel 1 radar-derived velocities. [Nagler et al., RS, 2015] 30
31 From regional to ice sheet wide analysis 200 km 31
32 From regional to ice sheet wide analysis km 200 km 32
33 Answering questions across space and time Velocity (m/yr) Velocity (m/yr) Differences during 2014 summer to fall: (May 24-June 9) to (Sep 6-Sep 22) 33
34 Answering questions across space and time Velocity (m/yr) Velocity (m/yr) Differences during 2014 summer to fall: (May 24-June 9) to (Sep 6-Sep 22) 34
35 Progress at all scales. For example Location & timing Understanding mass loss & freshwater flux Predicting sea level rise 35
36 New projections of future sea level rise New projections of future SLR RCP8.5 (high) 2007 IPCC high RCP2.6 (low) [IPCC 2013] 36
37 New projections of future sea level rise New projections of future SLR RCP8.5 (high) 2007 IPCC high RCP2.6 (low) Many of the IPCC 2013 conclusions regarding sea level rise and mass loss from ice sheets only have medium confidence. [IPCC 2013] 37
38 Expect more velocity changes to come [Paolo et al., Science, 2015] 38
39 Look where others aren t compared to [Tedstone et al., Nature, 2016] 39
40 Thank you & be in touch! Twila Moon Bristol Glaciology Centre Geographical Sciences University of Bristol 40
Observations of sea ice and ice sheet interaction in Greenland and the Antarctic Peninsula
Observations of sea ice and ice sheet interaction in Greenland and the Antarctic Peninsula Twila Moon 1,2, Ted Scambos 1, Mark Fahnestock 3, Ian Joughin 2, Ben Smith 2, Terry Haran 1, Marin Klinger 1,
Ice in a changing climate
Ice in a changing climate ESA$Ice$sheets$CCI$$ Phase$1$Results$&$Contribu8on$to$Climate$ Research$ $ $ R"Forsberg,"L"Sørensen,"R"Meister,"J"Levinsen,"" J"Dall,"A"Kusk"(DTU>Space,"Denmark)" T"Nagler"(ENVEO,"Austria)"
Open Research Online The Open University s repository of research publications and other research outputs
Open Research Online The Open University s repository of research publications and other research outputs Future sea-level rise from Greenland s main outlet glaciers in a warming climate Journal Item How
Buoyant flexure and basal crevassing in dynamic mass loss at Helheim Glacier
SUPPLEMENTARY INFORMATION DOI: 10.1038/NGEO2204 Buoyant flexure and basal crevassing in dynamic mass loss at Helheim Glacier Timothy D. James*, Tavi Murray, Nick Selmes, Kilian Scharrer and Martin O Leary
Today s Lecture: Land, biosphere, cryosphere (All that stuff we don t have equations for... )
Today s Lecture: Land, biosphere, cryosphere (All that stuff we don t have equations for... ) 4 Land, biosphere, cryosphere 1. Introduction 2. Atmosphere 3. Ocean 4. Land, biosphere, cryosphere 4.1 Land
Changes in ice front position on Greenland s outlet glaciers from 1992 to 2007
JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 113,, doi:10.1029/2007jf000927, 2008 Changes in ice front position on Greenland s outlet glaciers from 1992 to 2007 Twila Moon 1 and Ian Joughin 2 Received 24 October
"Ice Sheets and Sea Level Rise: How Should IPCC Handle Deep Uncertainty?" Michael Oppenheimer For Inside the IPCC Princeton University 1 April 2008
"Ice Sheets and Sea Level Rise: How Should IPCC Handle Deep Uncertainty?" Michael Oppenheimer For Inside the IPCC Princeton University 1 April 2008 This Talk is about: IPCCs (controversial) assessment
Optical Remote sensing of the Cryosphere: Focus on velocity mapping
Optical Remote sensing of the Cryosphere: Focus on velocity mapping Dr. Alexandra Messerli Norwegian Polar Institute ESA Remote Sensing of the Cryosphere Training Course 12 th June 2018 Longyearbyen, Svalbard
Sea level contribution of Antarctica & Greenland Andrew Shepherd
Andrew Shepherd School of Geosciences, Edinburgh Sea Subglacial level contribution lakes of Antarctica & Greenland Climate change Satellite observations Ice Sheets and Sea level Climate change Climate
Ice sheet freshwater forcing
Jan Lenaerts Utrecht University University of Colorado Ice sheet freshwater forcing Photo: Reijmer, 2011 Sea level meeting 5 to ~6 pm, South Bay Goal: Sea level rise and its impacts on coastal populations
Modelling of surface to basal hydrology across the Russell Glacier Catchment
Modelling of surface to basal hydrology across the Russell Glacier Catchment Sam GAP Modelling Workshop, Toronto November 2010 Collaborators Alun Hubbard Centre for Glaciology Institute of Geography and
Waking Giants: Ice Sheets in a Warming World
Waking Giants: Ice Sheets in a Warming World Dr. Robert Bindschadler Chief Scien6st Hydrospheric and Biospheric Sciences Laboratory NASA Goddard Space Flight Center Robert.A.Bindschadler@nasa.gov Ice Sheets
Antarctica & Greenland, Theory & Observations
Ocean-Ice Interactions: Antarctica & Greenland, Theory & Observations Keck Institute for Space Studies September 9, 2013 David HOLLAND New York University + Abu Dhabi 0 Overview: Ocean-Ice Interface Delivery
Large-scale changes in Greenland outlet glacier dynamics triggered at the terminus
PUBLISHED ONLINE: JANUARY 2 DOI:./NGEO Large-scale changes in Greenland outlet glacier dynamics triggered at the terminus Faezeh M. Nick 1 *, Andreas Vieli 1, Ian M. Howat 2 and Ian Joughin The recent
Fjord Circulation and Thermal Forcing in the Ice-Proximal Region
Fjord Circulation and Thermal Forcing in the Ice-Proximal Region Saffia Hossainzadeh, Prof. Slawek Tulaczyk, Connor Williams RASM Project Meeting University of Arizona November 14-16, 2012 Introduction
XVI. Warming and the cryosphere
XVI. Warming and the cryosphere review temperature from thermometers, satellites, glacier lengths and boreholes all show significant warming in the 20th C+ reconstruction of past temperatures from corals,
Climate Regimes of the Arctic
Climate Regimes of the Arctic The climate of Greenland, recent changes and the ice sheet mass balance Map of Greenland, showing elevation and the location of GC- Net automatic weather stations (+), expedition
Observed rate of loss of Arctic ice extent is faster than IPCC AR4 predictions
When will Summer Arctic Sea Ice Disappear? Wieslaw Maslowski Naval Postgraduate School Collaborators: Jaclyn Clement Kinney, Andrew Miller, Terry McNamara, John Whelan - Naval Postgraduate School Jay Zwally
The Wedge, Grease and Heat: Why Ice Sheets Hate Water
The Wedge, Grease and Heat: Why Ice Sheets Hate Water Dr. Robert Bindschadler Chief Scientist Laboratory for Hydrospheric and Biospheric Sciences NASA Goddard Space Flight Center Robert.A.Bindschadler@nasa.gov
Projection of global and regional sea level change for the 21st century
Projection of global and regional sea level change for the 21st century Jonathan Gregory 1,2 1 NCAS-Climate, University of Reading 2 Met Office Hadley Centre, Exeter Global mean sea level rise observed
Danish Meteorological Institute
Ministry of Climate and Energy Climate Change: Facts-Scenarios What can we learn from the ice sheets? Guðfinna Aðalgeirsdóttir www.dmi.dk/dmi/dkc08-06 Copenhagen 2008 page 1 of 11 Colophone Serial title:
Contrasts in the response of adjacent fjords and glaciers to ice-sheet surface melt in West Greenland
Annals of Glaciology 57(73) 2016 doi: 10.1017/aog.2016.19 25 The Author(s) 2016. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.
K&C Phase 4 Status report. Ice Sheet Monitoring using ALOS-2. University of California, Irvine 2 JPL
K&C Phase 4 Status report Ice Sheet Monitoring using ALOS-2 Bernd Scheuchl 1, Jeremie Mouginot 1, Eric Rignot 1,2 1 University of California, Irvine 2 JPL Science Team meeting #24 Tokyo, Japan, January
Sea-ice change around Alaska & Impacts on Human Activities
Sea-ice change around Alaska & Impacts on Human Activities Hajo Eicken Geophysical Institute University of Alaska Fairbanks, hajo.eicken@gi.alaska.edu Introduction The Arctic sea-ice cover: Observations
Ice Sheets and Glaciers
Ice Sheets and Glaciers Technical University of Denmark Kees van der Veen Department of Geography University of Kansas Why are glaciers and ice sheets important? Large volume of fresh water stored in ice
Climate Change: Impacts, Solutions, and Perceptions (part 2) OLLI, Spring 2013
Climate Change: Impacts, Solutions, and Perceptions (part 2) OLLI, Spring 2013 Climate Change: Impacts, Solutions, and Perceptions Spring 2013 (part 2) February 19 Ocean acidification and the increase
GSC 107 Lab # 3 Calculating sea level changes
GSC 107 Lab # 3 Calculating sea level changes Student name Student ID Background Glacial-Interglacial Cycles Climate-related sea-level changes of the last century are very minor compared with the large
Basal topographic controls on rapid retreat of Humboldt Glacier, northern Greenland
Journal of Glaciology, Vol. 61, No. 225, 2015 doi: 10.3189/2015JoG14J128 137 Basal topographic controls on rapid retreat of Humboldt Glacier, northern Greenland J.R. CARR, 1,2,3 A. VIELI, 4 C.R. STOKES,
Supraglacial Lake Formation and What it Means for Greenland s Future
Supraglacial Lake Formation and What it Means for Greenland s Future GreenPeace Ulyana Nadia Horodyskyj GEOG 5271 questions of interest How, when and where do these lakes form in Greenland? How do these
Watch for Week 8/9 Review Assessment
Wednesday, October 25, 2017 Exam 2 results, key is posted on the main course website. Please check to make sure there are no errors in the scoring of the Scantron portion of the exam (note the scantron
Glacial Earthquakes in Greenland and Antarctica
Annu. Rev. Earth Planet. Sci. 2010. 38:467 91 First published online as a Review in Advance on February 25, 2010 The Annual Review of Earth and Planetary Sciences is online at earth.annualreviews.org This
Measuring recent dynamic behaviour of Svalbard glaciers to investigate calving and surging
Measuring recent dynamic behaviour of Svalbard glaciers to investigate calving and surging Adrian Luckman, Swansea University, UNIS Doug Benn, Heidi Sevestre, University of St Andrews Suzanne Bevan, Swansea
Title. Author(s)Greve, Ralf. Issue Date Doc URL. Type. Note. File Information.
Title Increased future sea level rise due to rapid decay o Author(s)Greve, Ralf CitationProceedings of the First International Symposium on Issue Date 008--04 Doc URL http://hdl.handle.net/5/4868 Type
Ice Sheets and Climate Change. William H. Lipscomb Los Alamos National Laboratory
Ice Sheets and Climate Change William H. Lipscomb Los Alamos National Laboratory What is an expert? An expert is somebody who is more than 50 miles from home, has no responsibility for implementing the
The recent retreat of glaciers in the world
The recent retreat of glaciers in the world Consequences for the global environment Dr Bernard Francou Director of Research Emeritus Grenoble-Alpes University - France Glaciers are part of the cryosphere
Decay of the Greenland Ice Sheet due to surface-meltwater-induced acceleration of basal sliding
Decay of the Greenland Ice Sheet due to surface-meltwater-induced acceleration of basal sliding arxiv:0905.07v [physics.geo-ph] May 009 Ralf Greve Shin Sugiyama Institute of Low Temperature Science, Hokkaido
Frank PATTYN Laboratoire de Glaciologie Université Libre de Bruxelles Belgium
Frank PATTYN Laboratoire de Glaciologie Université Libre de Bruxelles Belgium 200 x 10 6 people living in coastal floodplains IPCC, 2007 2 x 10 6 km 2 and 10 12 US$ worth of assets lying
Danish Meteorological Institute Scientific Report 15-05
Danish Meteorological Institute Figure 6.2: Monthly temperature fields used to drive the spinup run. temperature data [Bindschadler et al., 2013] to drive PISM. This spinup run through the past glacial
Acceleration of the contribution of the Greenland and Antarctic ice sheets to sea level rise
GEOPHYSICAL RESEARCH LETTERS, VOL. 38,, doi:10.1029/2011gl046583, 2011 Acceleration of the contribution of the Greenland and Antarctic ice sheets to sea level rise E. Rignot, 1,2 I. Velicogna, 1,2 M. R.
Non-linear retreat of Jakobshavn Isbræ since the Little Ice Age controlled by geometry
The Cryosphere Discuss., https://doi.org/.194/tc-17-11 Discussion started: 2 September 17 Non-linear retreat of Jakobshavn Isbræ since the Little Ice Age controlled by geometry Nadine Steiger 1, Kerim
CO, USA) CHAPTER 6A ICE SHEETS
6A Ice Sheets Charles R. Bentley (Department of Geology and Geophysics, University of Wisconsin, Madison, WI, USA); Robert H. Thomas (EG&G Services, NASA Wallops Flight Facility, Wallops Island, Virginia,
Future sea level rise through 2100 and beyond
Future sea level rise through 2100 and beyond Emma Stone Uncertain World Summit (Tuesday 20 October 2015) 1 Why are we interested in future sea level rise? How certain are we about the worst case scenario
Greenland subglacial drainage evolution regulated by weakly-connected regions of the bed
Greenland subglacial drainage evolution regulated by weakly-connected regions of the bed Matthew Hoffman Stephen Price Lauren Andrews Ginny Catania Weakly-connected Drainage Distributed Drainage Channelized
Step-wise changes in glacier flow speed coincide with calving and glacial earthquakes at Helheim Glacier, Greenland
Click Here for Full Article GEOPHYSICAL RESEARCH LETTERS, VOL. 35, L24503, doi:10.1029/2008gl036127, 2008 Step-wise changes in glacier flow speed coincide with calving and glacial earthquakes at Helheim
Sea level change around the Philippines
Sea level Sea level around the Philippines Institute of Environmental Science for Social Change (ESSC) Conference on Internal Migration and Displacement Davao City, Philippines 20 May 2012 Regional How
Global Ocean Heat Content (0-700m) Other signs of (global) warming. Global Sea Level Rise. Change in upper ocean temperature ( )
Global Ocean Heat Content (0-700m) Change in upper ocean temperature (1955-2003) 0.25C 0.50C Solid lines are three independent estimates (95% confidence interval in grey) IPCC 2007 Fig TS.16 Trends in
Update on Climate Science. Professor Richard Betts, Met Office
Update on Climate Science Professor Richard Betts, Met Office The science of climate change Crown copyright Met Office Prof Richard Betts Head of Climate Impacts Research Crown copyright Met Office Observing
Greenland marine-terminating glacier area changes:
Annals of Glaciology 52(59) 2011 91 Greenland marine-terminating glacier area changes: 2000 2010 Jason E. BOX, 1,2 David T. DECKER 2 1 Department of Geography, The Ohio State University, 1036 Derby Hall,
Title. Author(s)Maslowski, Wieslaw. Citation 地球温暖化による劇変を解明する. 平成 20 年 6 月 24 日. 札幌市. Issue Date Doc URL. Type.
Title When will Summer Arctic Sea Ice Disappear? Author(s)Maslowski, Wieslaw Citation 地球温暖化による劇変を解明する. 平成 20 年 6 月 24 日. 札幌市 Issue Date 2008-06-24 Doc URL http://hdl.handle.net/2115/34395 Type conference
Brita Horlings
Knut Christianson Brita Horlings brita2@uw.edu https://courses.washington.edu/ess431/ Natural Occurrences of Ice: Distribution and environmental factors of seasonal snow, sea ice, glaciers and permafrost
Summary for the Greenland ice sheet
Contribution of Greenland and Antarctica to future sea level change Catherine Ritz, Gaël Durand, Fabien Gillet-Chaulet, Olivier Gagliardini, Vincent Peyaud EDGe team, LGGE, CNRS/UJF Grenoble, France Ice
Snow cover measurement and variation analysis
Snow cover measurement and variation analysis Konosuke Sugiura / Associate Professor, University of Toyama Fig.1 The rapid progression of snow cover extent in the northern hemisphere in October 2012. Red:
UNSTOPPABLE COLLAPSE OF THE WEST ANTARCTIC ICE SHEET IS NOT HAPPENING
UNSTOPPABLE COLLAPSE OF THE WEST ANTARCTIC ICE SHEET IS NOT HAPPENING Dr. Don J. Easterbrook, Western Washington University, Bellingham, WA May 19, 2014 A New York Times headline reads Scientists Warn
Interaction Between the Warm Subsurface Atlantic Water in the Sermilik Fjord and Helheim Glacier in Southeast Greenland
Interaction Between the Warm Subsurface Atlantic Water in the Sermilik Fjord and Helheim Glacier in Southeast Greenland Ola M. Johannessen, Alexander Korablev, Victoria Miles, Martin W. Miles & Knut E.
Spatial and temporal variations in Greenland glacial-earthquake activity,
JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 117,, doi:10.1029/2012jf002412, 2012 Spatial and temporal variations in Greenland glacial-earthquake activity, 1993 2010 Stephen A. Veitch 1 and Meredith Nettles 1
Glaciers and climate change Jon Ove Hagen, Department of Geosciences University of Oslo
Glaciers and climate change Jon Ove Hagen, Department of Geosciences University of Oslo joh@geo.uio.no Department of geosciences, Faculty of Mathematics and Natural Sciences Glaciers and climate change
IMPACTS OF A WARMING ARCTIC
The Earth s Greenhouse Effect Most of the heat energy emitted from the surface is absorbed by greenhouse gases which radiate heat back down to warm the lower atmosphere and the surface. Increasing the
Durham Research Online
Durham Research Online Deposited in DRO: 09 January 2018 Version of attached le: Published Version Peer-review status of attached le: Peer-reviewed Citation for published item: Carr, R. and Stokes, C.R.
Grounding line migration and high-resolution calving dynamics of Jakobshavn Isbræ, West Greenland
JOURNAL OF GEOPHYSICAL RESEARCH: EARTH SURFACE, VOL. 118, 382 395, doi:1.129/212jf2515, 213 Grounding line migration and high-resolution calving dynamics of Jakobshavn Isbræ, West Greenland R. Rosenau,
Ocean variability contributing to basal melt rate near the ice front of Ross Ice Shelf, Antarctica
Ocean variability contributing to basal melt rate near the ice front of Ross Ice Shelf, Antarctica Laurie Padman I. Arzeno, R.C. Beardsley, R. Limeburner, B. Owens, S.R. Springer, C.L. Stewart, M.J.M.
Supplementary Materials for
advances.sciencemag.org/cgi/content/full/3/12/e1701169/dc1 Supplementary Materials for Abrupt shift in the observed runoff from the southwestern Greenland ice sheet Andreas P. Ahlstrøm, Dorthe Petersen,
Rapid submarine melting driven by subglacial discharge, LeConte Glacier, Alaska
GEOPHYSICAL RESEARCH LETTERS, VOL. 40, 1 6, doi:10.1002/grl.51011, 2013 Rapid submarine melting driven by subglacial discharge, LeConte Glacier, Alaska Roman J Motyka, 1,2 William P Dryer, 1,2 Jason Amundson,
Changing Landscapes: Glaciated Landscapes. How do glaciers move?
Changing Landscapes: Glaciated Landscapes How do glaciers move? What you need to know Differences between cold-and warm-based glaciers, their locations and rates of movement Glacier ice movement including
Antarctic Ice Sheet cci. Anna Hogg
Antarctic Ice Sheet cci Anna Hogg Overview 1.Project Summary and Status 2.AIS cci Products Surface Elevation Change Gravimetry Mass Balance Ice Velocity Grounding Line Location 3.Climate Assessment 4.AIS
Understanding and Modelling Rapid Dynamic Changes of Tidewater Outlet Glaciers: Issues and Implications
Surv Geophys (211) 32:437 458 DOI 1.17/s1712-11-9132-4 Understanding and Modelling Rapid Dynamic Changes of Tidewater Outlet Glaciers: Issues and Implications Andreas Vieli Faezeh M. Nick Received: 5 November
Lecture 28: Observed Climate Variability and Change
Lecture 28: Observed Climate Variability and Change 1. Introduction This chapter focuses on 6 questions - Has the climate warmed? Has the climate become wetter? Are the atmosphere/ocean circulations changing?
ICE is less dense than water about 92% of the density of water; it floats. This is unlike the behavior of most substances, which generally are denser
ICE is less dense than water about 92% of the density of water; it floats. This is unlike the behavior of most substances, which generally are denser as solids than as liquids (right). This is a result
ACTIVITY II: THE FATE OF THE LARSEN S, A FAMILY OF ANTARCTIC ICE SHELVES
ACTIVITY II: THE FATE OF THE LARSEN S, A FAMILY OF ANTARCTIC ICE SHELVES Ice Shelves play a critical role in Antarctica, serving as a buffer between the ocean and the continental ice sheet covering the
Modelling the transfer of supraglacial meltwater to the bed of Leverett Glacier, Southwest Greenland
doi:10.5194/tc-9-123-2015 Author(s) 2015. CC Attribution 3.0 License. Modelling the transfer of supraglacial meltwater to the bed of Leverett Glacier, Southwest Greenland C. C. Clason 1, D. W. F. Mair
Glaciers Response after Disintegration of Northern Larsen Ice Shelf, Antarctic Peninsula, observed by Multisensor Satellite Data
Glaciers Response after Disintegration of Northern Larsen Ice Shelf, Antarctic Peninsula, observed by Multisensor Satellite Data Helmut Rott1,2, Jan Wuite1, Thomas Nagler1, Dana Floricioiu3, Michael Kern4
Why modelling? Glacier mass balance modelling
Why modelling? Glacier mass balance modelling GEO 4420 Glaciology 12.10.2006 Thomas V. Schuler t.v.schuler@geo.uio.no global mean temperature Background Glaciers have retreated world-wide during the last
Advanced Lecture: Oceanographic regime of the West Antarctic Ice Shelves
ACDC2010: Ice Sheet - Ocean Interactions 8-19 June 2010, MIT FABLAB, Lyngen, NORWAY Advanced Lecture: Oceanographic regime of the West Antarctic Ice Shelves Adrian Jenkins British Antarctic Survey, Natural
Mass balance of the Greenland ice sheet from 1958 to 2007
GEOPHYSICAL RESEARCH LETTERS, VOL. 35, L20502, doi:10.1029/2008gl035417, 2008 Mass balance of the Greenland ice sheet from 1958 to 2007 E. Rignot, 1,2 J. E. Box, 3 E. Burgess, 4 and E. Hanna 5 Received
Extensive Retreat of Greenland Tidewater Glaciers,
Extensive Retreat of Greenland Tidewater Glaciers, 2000 2010 Author(s): T. Murray, K. Scharrer, N. Selmes, A. D. Booth, T. D. James, S. L. Bevan, J. Bradley, S. Cook, L. Cordero Llana, Y. Drocourt, L.
Ice flux divergence anomalies on 79north Glacier, Greenland
GEOPHYSICAL RESEARCH LETTERS, VOL. 38,, doi:10.1029/2011gl047338, 2011 Ice flux divergence anomalies on 79north Glacier, Greenland H. Seroussi, 1,2 M. Morlighem, 1,2 E. Rignot, 1,3 E. Larour, 1 D. Aubry,
Accelerating ice loss from the fastest Greenland and Antarctic glaciers
GEOPHYSICAL RESEARCH LETTERS, VOL. 38,, doi:10.1029/2011gl047304, 2011 Accelerating ice loss from the fastest Greenland and Antarctic glaciers R. Thomas, 1 E. Frederick, 1 J. Li, 2 W. Krabill, 1 S. Manizade,
Observing Arctic Sea Ice Change. Christian Haas
Observing Arctic Sea Ice Change Christian Haas Decreasing Arctic sea ice extent in September Ice extent is decreasing, but regional patterns are very different every year The Cryosphere Today, http://arctic.atmos.uiuc.edu;
GREENLAND ICE SHEET PHYSICAL-GEOGRAPHIC SETTING. Perfluorocarbons (PFCs), GWP 7,000 9,000. Sulfur hexafluoride (SF 6 ), GWP: 23,900
310 GREENLAND ICE SHEET TABLE 1. Various Greenhouse Gases as Proportion of Total Emissions Developed Developing Least Developed CO 2 81% 41% 5% N 2 O 6 10 12 CH 4 11 16 21 Fluor gases 2 0 0 LUCF 0 33 62
Sea level over glacial cycles.
Sea level over glacial cycles. T1: 1 m/century With short periods of with rates up to 4m/century LIG Sea level higher than today (+9m) Siddall et al. 2003 Very stable sea level in human history. Image
Ice Sheet Modeling and Sea Level Rise. William Lipscomb, NCAR CESM Sea Level Session 10 January 2018
Ice Sheet Modeling and Sea Level Rise William Lipscomb, NCAR CESM Sea Level Session 10 January 2018 Ice sheets in IPCC AR4 The IPCC Fourth Assessment Report (AR4) projected 0.18 to 0.59 m of sea level
Greenland and Antarctic ice sheets under 1.5 C global warming
Greenland and Antarctic ice sheets under 1.5 C global warming Frank Pattyn, Catherine Ritz, Edward Hanna, Xylar Asay-Davis, Rob DeConto, Gaël Durand, Lionel Favier, Xavier Fettweis, Heiko Goelzer, Nicholas
Modelling meltwater delivery to the ice-bed interface through fractures at the margin of the Greenland Ice Sheet
Modelling meltwater delivery to the ice-bed interface through fractures at the margin of the Greenland Ice Sheet Caroline Clason, Douglas Mair & Peter Nienow CESM Land Ice Working Group Meeting, January
Glacier Hydrology. Why should you care?
Glacier Hydrology Why should you care? Climate Local Meteorology Surface Mass And Energy Exchange Net Mass Balance Dynamic Response Effect on Landscape Changes In Geometry Water Flow PRACTICAL MATTERS:
GRACE Measurement of Total Water Storage Variations Over Texas
GRACE Measurement of Total Water Storage Variations Over Texas Byron Tapley, Srinivas Bettadpur Himanshu Save, Tatyana Pekker University of Texas Center for Space Research First Texas Water Forum - Drought
Chapter 2. Changes in Sea Level Melting Cryosphere Atmospheric Changes Summary IPCC (2013)
IPCC (2013) Ice is melting faster (sea ice, glaciers, ice sheets, snow) Sea level is rising More ocean heat content More intense rainfall More severe drought Fewer frosts More heat waves Spring is arriving
basal } 0.01 m a -1 Glacier hydrology Glacier hydrology Glacier hydrology Water sources 2nd part: applied glaciology
Glacier hydrology GEO 4420, 19.10.2006 Glacier hydrology Relevance: Water resource (climate change scenario) Ice dynamics (sliding, surge, icestreams) Geo-hazards (outburst floods) (Erosion, sediment transport)
Recent changes in high-latitude glaciers, ice caps and ice sheets
Recent changes in high-latitude glaciers, ice caps and ice sheets Waleed Abdalati NASA/Goddard Space Flight Center, Greenbelt, Maryland The glaciers and ice sheets of the world contain enough ice to raise
Iceberg properties and distributions in three Greenlandic fjords using satellite imagery
Annals of Glaciology 58(74) 2017 doi: 10.1017/aog.2017.5 92 The Author(s) 2017. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.
CLIMATE READY BOSTON. Climate Projections Consensus ADAPTED FROM THE BOSTON RESEARCH ADVISORY GROUP REPORT MAY 2016
CLIMATE READY BOSTON Sasaki Steering Committee Meeting, March 28 nd, 2016 Climate Projections Consensus ADAPTED FROM THE BOSTON RESEARCH ADVISORY GROUP REPORT MAY 2016 WHAT S IN STORE FOR BOSTON S CLIMATE?
Modeled and observed fast flow in the Greenland ice sheet
Modeled and observed fast flow in the Greenland ice sheet Ed Bueler 1 Constantine Khroulev 1 Andy Aschwanden 2 Ian Joughin 3 1 Dept of Mathematics and Statistics, University of Alaska Fairbanks 2 Arctic
A RADAR-BASED CLIMATOLOGY OF HIGH PRECIPITATION EVENTS IN THE EUROPEAN ALPS:
2.6 A RADAR-BASED CLIMATOLOGY OF HIGH PRECIPITATION EVENTS IN THE EUROPEAN ALPS: 2000-2007 James V. Rudolph*, K. Friedrich, Department of Atmospheric and Oceanic Sciences, University of Colorado at Boulder,
Past and future climate development in Longyearbyen, Svalbard
Past and future climate development in Longyearbyen, Svalbard Eirik J. Førland 1,2 and Ketil Isaksen 1 1). Norwegian Meteorological Institute 2). Norwegian Centre for Climate Services Svalbard Science
The State of the cryosphere
The State of the cryosphere Course outline Introduction The cryosphere; what is it? The Earth; a unique planet Cryospheric components Classifications Lecture outlines The State of the cryosphere The State
Remote Sensing 4 Global mass changes from remote sensing
Remote Sensing 4 Global mass changes from remote sensing Nick Barrand School of Geography, Earth & Environmental Sciences University of Birmingham, UK Why glacier mass changes? o Water resources o Energy
Radar mapping of snow melt over mountain glaciers in High Mountain Asia Mentor: Tarendra Lakhankar Collaborators: Nir Krakauer, Kyle MacDonald and
Radar mapping of snow melt over mountain glaciers in High Mountain Asia Mentor: Tarendra Lakhankar Collaborators: Nir Krakauer, Kyle MacDonald and Nick Steiner How are Glaciers Formed? Glaciers are formed
What we know about regional sea level rise and how we are affected by variations from the global mean
regional sea level rise and variations from the global Magnus Hieronymus 2018 Regional and Global Sea level Global Density change: thermosteric Regional Density change: thermosteric+ halosteric Land Ice
A unifying framework for iceberg-calving models
822 Journal of Glaciology, Vol. 56, No. 199, 2010 A unifying framework for iceberg-calving models Jason M. AMUNDSON, Martin TRUFFER Geophysical Institute, University of Alaska Fairbanks, 903 Koyukuk Drive,
Lu, S., P. Craig, C. Wallen, Z. Liu, A. Stoddard, W. McAnnally and E. Maak. Dynamic Solutions, Knoxville, TN USACOE, Sacramento District
An Extended-Delta Hydrodynamic Model Framework for Sea Level Rise Analysis to Support Resource Management Planning for the Sacramento-San Joaquin River Delta Lu, S., P. Craig, C. Wallen, Z. Liu, A. Stoddard,
Understanding and attributing climate variations: The role of energy. Kevin E Trenberth NCAR
Understanding and attributing climate variations: The role of energy Kevin E Trenberth NCAR NCAR: attribution A way to organize a lot of research Makes it relevant to societal concerns Has some implications
Loitering of the Retrea1ng Sea Ice Edge in the Arc1c Seas
Michael Steele Loitering of the Retrea1ng Sea Ice Edge in the Arc1c Seas Arc$c Obs Mtg: Sea$le Michael Steele & Wendy Ermold Polar Science Center, Applied Physics Laboratory Seattle, WA USA Steele, M.