Understanding the Response of Greenland's Marine Terminating Glaciers to Oceanic and Atmospheric Forcing Agenda

U.S. CLIVAR International Workshop

June 4, 2013 - June 7, 2013

Wylie Inn & Conference Center, Beverly, MA

WORKSHOP AGENDA

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Tuesday Wednesday Thursday Friday

TUESDAY, JUNE 4^th

9:00 – 10:15: Session 1. Introduction and Big Picture Motivation

F. Straneo - Introduction: Meeting Structure and Goals (20 min) Talk

B. Bindschadler – Staying Ahead of the Greenland Ice Sheet (20 min) Talk

I. Joughin – Recent Greenland Ice Sheet Variability (20 min) Talk

10:15 - 10:45: Coffee Break

10:45 - 12:15: Session 2. Evidence of Glacier Variability (Chair: I. Joughin)

T. Moon – Patterns of glacier variability in Greenland (20 min) Talk

L. Stearns – Observing Tidewater Glacier Variability: Progress and Challenges (20 min) Talk

M. Truffer - Lessons learned from Alaskan tidewater glaciers (20 min)

Science Presentations and Poster Introductions (3 min each)

G. Hamilton – Factors leading to the onset of tidewater glacier terminus retreat
A. Ahlstrøm – Seasonal velocity variations of 11 outlet glaciers from in situ GPS Talk Poster
M. Andersen – Dynamic mass loss of North West Greenland Talk
E. Enderlin – Re-examining the timing of recent dynamic changes in NW Greenland Talk Poster
M. Truffer – Fjord /Glacier Ice Interactions: Nuup Kangerlua (Godthåbsfjord) Talk Poster
V. Miles - Rapid changes in advance-retreat (co) variability of Sermilik fjord glaciers, SE Greenland
S. Foga - Flow variability of Heilheim Glacier and potential oceanic forcing Talk Poster

12:15 – 1:30: Lunch

1:45 – 3:00: Session 3. What are the Proposed Mechanisms? (Chair: R. Bindschadler)

A. Vieli – Modelling the dynamics of tidewater outlet glaciers: approaches, issues, perspectives (20 min) Talk

J. Amundson – In defense of ice mélange (20 min) Talk

R. Motyka – Submarine melting: drivers, measurement, and importance (20 min) Talk

Discussion

3:00 – 3:30: Coffee Break

3:30 - 5:00: Session 4. What Can the Paleo Record Teach Us? (Chairs: D. Roberts, A. Vieli)

C. Andresen – Linking glaciers, ocean and atmospheric variability – lessons from marine sediment archives (20 min) Talk

J. Lloyd – Long term variability of the ocean around Greenland (20 min) Talk

D. Roberts – West Greenland ice stream instability during the LGM/Holocene transition (20 min) Talk

Science Presentations and Poster Introductions (3 min each)

A. Carlson – Paleo influence of ocean temperatures on southwest GIS margins Talk
A. Jennings – The Role of Ocean Warming in Central West Greenland Ice Stream Retreat: LGM through Deglaciation Talk
L. Levy – Constraints on the Holocene extents of the southwestern margin of the GIS Talk
T. Lowell – Late Holocene Expansion of the GIS and Implications for Its Current Decay Talk
K. Nisancioglu – Melting of Northern Greenland during the last interglacial Talk Poster
M. Kelly – Late glacial-early Holocene fluctuations of GIS outlet glaciers and adjacent local ice caps Talk
K. Kjeldsen – Mass loss of the southern half of the GIS since the Little Ice Age Max Talk & Poster will not be made available online

5:00 - 6:00: End of Day Discussion (Moderators: L. Padman, G. Hamilton)

6:00 - 7:00: Poster Session I

7:30 Dinner at the Salem Beerworks, Salem, MA

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WEDNESDAY, JUNE 5^th

8:30 – 10:00: Session 5. Dynamics at the Ice-Ocean Boundary (R. Motyka, D. Menemenlis)

A. Jenkins – Ice-Ocean Boundary Dynamics (20 min) Talk

K. Nicholls – Observations from the ice-ocean boundary (20 min) Talk

Science Presentations and Poster Introductions (3 min each)

S. Kimura – An application of plume theory to assess impacts of subglacial discharge on glacier subaqueous melting Talk
T. Millgate – Effect of Basal Channels on Oceanic Ice-Shelf Melting Talk Poster
S. Hossainzadeh – Effects of Greenland’s Runoff in a Regional Arctic System Model Talk Poster
R. Sciascia – Seasonal variability of submarine melting and circulation in an East Greenland fjord Talk Poster
A. Wells – Melting-driven evolution of an ice shelf coupled to a buoyant meltwater plume Talk
Y. Xu – Subaqueous melting of Store Glacier, W Greenland from 3D numerical modeling and ocean observations Talk

Discussion

10:00 - 10:30: Coffee Break

10:30 - 12:15: Session 6. Role of (sub) Glacial Hydrology (Chairs: O. Sergienko, D. van As)

I. Hewitt – Modeling glacial hydrology: implications for submarine melt water discharge (20 min) Talk

T. Creyts - Seeing what condition the condition is in: Characteristics of Greenland drainage in englacial and subglacial systems (20 min) Talk will not be available online.

Science Presentations and Poster Introductions (3 min each)

T. Creyts – Fast or slow?: Englacial drainage in the Greenland Ice Sheet Talk
K. Schild – Understanding the Subglacial Hydrological Environment of a Greenland Tidewater Glacier Talk
W. Chu – Role of subglacial hydrology and basal topography in driving ice flow of Greenland outlet glaciers Talk
D. Lampkin – A Fuel Injected Ice Stream? Melt Water Drainage from Saturated Crevasses, Jakobshavn Talk
D. Van As – Increasing meltwater discharge from the Nuuk (SW) region Poster

Summary/Discussion

12:15 – 1:30: Lunch

1:45 – 3:30: Session 7. Oceanic Forcing at the Glaciers’ Edge (Chairs: F. Straneo, J. Mortensen)

D. Sutherland – Connections between continental shelf circulation and fjord circulation (20 min) Talk

F. Straneo – Observations at the margins of Greenland Glaciers (20 min) Talk

Science Presentations and Poster Introductions (3 min each)

P. Budgell –A Nested High-Resolution Simulation of Circulation in Sermilik Fjord Talk Poster
R. Jackson – Shelf-forced fjord circulation and heat transport at the terminus of a major outlet glacier Talk Poster
C. Gladish – Sub-annual renewal of a Greenland glacial fjord driven by subglacial fresh water discharge Talk Poster
L. Padman – Decadal Variability of Petermann Gletscher, NW Greenland - Ice, Ocean, and Atmosphere Talk
V. Miles – Rapid changes in advance–retreat (co) variability of Sermilik fjord glaciers, southeast Greenland Talk
J. Mortensen– Circulation and heat sources for glacial melt in a subarctic sill fjord (Godthabsfjord) Talk Poster
J. Bendtsen – Modeling of intermediate water mass formation and heat transport in Godthabsfjord Talk
R. Motyka - LeConte Glacier, Alaska: Submarine Melting and Proglacial Fjord Dynamics in September 2012 Talk Poster

Summary/Discussion

3:30 - 4:00: Coffee Break

4:00 - 5:00: End of Day Discussion (Moderators: R. Hallberg, O. Sergienko)

5:00 - 6:00: Poster Session II

6:00: Reception at Wiley

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THURSDAY, JUNE 6^th

8:30 – 10:30: Session 8. Large Scale Ocean/Continental Shelves (Chairs: F. Straneo, P. Heimbach)

I. Fenty – Ocean Variability around Greenland: Insights from Observations and a Coupled Ocean-Sea Ice Model (20 min) Talk

R. Curry – Variability in the North Atlantic Ocean 1950-2010 (20 min) Talk

T. Haine – Modeling the large-scale ocean circulation around Greenland (20 min) Talk

Science Presentations and Poster Introductions (3 min each)

I. Koszalka – Oceanic variability on the SE Greenland shelf in the vicinity of the Helmheim-Sermilik glacier-fjord system
W. Maslowski – Modeling of Ocean Dynamics and Variability near Greenland’s Marine Terminating Glaciers Talk
U. Schauer – Decadal warming in the West Spitsbergen Current in Fram Strait Talk
P. Dodd – The Supply of Warm Atlantic Water to Nioghalvfjerdsbræn in North East Greenland Talk
P. Myers – Oceanographic processes in Baffin Bay impacting or being impacted by Greenland Talk
B. Harden – Shelf variability and the forcing of hydrographic changes within Sermilik fjord Talk

Summary/Discussion

10:30 - 11:00: Coffee Break

11:00 - 12:15: Session 9. Calving and Ice Melange (Chairs: I. Joughin, G. Hamilton)

J. Bassis – Granular model of ice (partially) explains diverse calving patterns from grounded and floating glaciers (20 min) Talk

Science Presentations and Poster Introductions (3 min each)

A. Taylor – A physically-based crevasse-depth calving model applied in two dimensions to marine outlet glaciers: Talk
T. Bartholomaus – Does calving matter? Evidence for significant submarine melt Talk Poster
R. Cassotto – Observations of tidal and calving impacts on near-terminus ice flow and terminus stability? Talk Poster
M. Dennin – Jamming of Ice Melange: Modeling Ice Melange Dynamics with Particle Rafts Talk Poster
W. Sneed – Norske Oer Ice Barrier: permanent, semi-permanent, or not Talk Poster
C. Richards – Timing and characterization of calving events from surface waves Talk Poster
M. Oltmanns – Forcing of the ice by Katabatic winds – Ammassalik, SE Greenland Talk

Discussion

12:15 – 1:30: Lunch

1:45 - 3:30: Session 10. Modeling Glaciers, Ice sheets and Climate (Chairs: A. Vieli, S. Price)

H. Seroussi – Modeling of Greenland dynamics (20 min) Talk will not be available online.

S. Price – Land Ice Modeling in Earth System Models (20 min) Talk

Science Presentations and Poster Introductions (3 min each)

O. Sergienko – Basal conditions of fast-flowing outlet glaciers and ice streams from 3D inversions Talk
F. Nick – Future sea-level rise from Greenland’s major outlet glaciers in a warming climate Talk Poster
A. Humbert – Modelling concepts of the Jacobshavn Isbrae and the Greenland Ice Sheet Talk
R. Hallberg – Adding Coupling between Oceans and Ice-sheet Dynamics to Coupled Climate Models Talk
N. Schlegel – Sensitivity of flow in Greenland glaciers to errors in surface mass balance forcing Talk & Poster will not be available online.
C. Rodehacke – Fully coupled ice sheet–earth system simulations: GIS response to CO2 Talk
C. Little – Uncertainty in 21st century oceanic heat content near Greenland Talk Poster

Discussion

3:30 - 4:00: Coffee Break

4:00 - 5:00: Session 11. Bathymetry (Chairs: J. Mortensen, R. Motyka)

R. Bell – Airborne Measurements of Glaciers and Fjords (20 min) Talk

Science Presentations and Poster Introductions (3 min each)

K. Tinto – Bathymetry in fjords of Northwestern Greenland from Operation IceBridge aerogravity Talk
D. Porter – Fjord bathymetry controls on basal melt and glacier retreat in Greenland Talk

Summary/Discussion

5:00 - 6:00: End of Day Discussion (Moderators: L. Stearns, D. Menemenlis)

6:00 - 7:00: Poster Session III

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