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Award Abstract #0806393

Observations and Modeling of Ocean - Ice Sheet Interaction in Jakobshavn and Helheim Ice Fjords, Greenland

NSF Org: PLR
Division Of Polar Programs
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Initial Amendment Date: August 26, 2008
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Latest Amendment Date: July 30, 2010
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Award Number: 0806393
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Award Instrument: Standard Grant
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Program Manager: William J. Wiseman, Jr.
PLR Division Of Polar Programs
GEO Directorate For Geosciences
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Start Date: September 1, 2008
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End Date: August 31, 2014 (Estimated)
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Awarded Amount to Date: $389,044.00
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Investigator(s): David Holland dmh4@nyu.edu (Principal Investigator)
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Sponsor: New York University
70 WASHINGTON SQUARE S
NEW YORK, NY 10012-1019 (212)998-2121
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NSF Program(s): ARCTIC RESRCH SUPPRT & LOGISTI,
ARCTIC SYSTEM SCIENCE PROGRAM,
ARCTIC NATURAL SCIENCES
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Program Reference Code(s): 0000, 1079, OTHR
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Program Element Code(s): 5205, 5219, 5280

ABSTRACT

Over the last decade, satellite observations have shown that the floating ice tongues in Greenland's fjords have been retreating and that some outlet glaciers are doubling speed en route to the ocean. The purpose of this project is to improve the understanding of the role of the ocean in such fast, dynamical changes at the margin of the Greenland Ice Sheet, and to quantify the potential for contribution of such change to future global sea level. This will be achieved by making oceanographic and meteorological observations over a period of five years at two key fjords: one on the west coast, Jakobshavn, and the other on the east coast, Helheim. Observations of the hydrography, particularly water temperature, and bathymetry deep into these fjords are critical elements in understanding how ocean waters interact with the margin of the Greenland Ice Sheet. The oceanographic and meteorological observations will be used to develop and validate a coupled ocean- ice sheet computer model that will enable improved understanding of processes that contribute to sea level rise. The broader impacts of the study include the involvement of two graduate students in the computer modeling and fieldwork. The principal investigator and graduate students will also give talks in the Greenland settlements where they will be based, and the PI will continue his collaboration with the Ilullisat Museum near Jakobshavn Fjord.


PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH

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Joughin, I, R.B. Alley, and D.M. Holland. "Ice sheet response to oceanic forcing," Science, v.338, 2012. 

Straneo, F., D.A. Sutherland, D. Holland, C. Gladish, G.S. Hamilton, H.L. Johnson, E. Rignot, Y. Xu, and M. Koppes. "Characteristics of ocean waters reaching Greenland?s glaciers," Annals. Glaciology, v.53, 2012. 

R. Walker, D. Holland, B. Parizek, R. Alley, S. Nowicki, and A. Jenkins. "Efficient Flowline Simulations of Ice Shelf?Ocean Interactions: Sensitivity Studies with
a Fully Coupled Model," J. Phys. Oceanogr., v.43, 2013. 

Konig-Beatty, C. and D.M. Holland. "Modeling Landfast Sea Ice by Adding Tensile Strength," J. Phys. Oceanogr.), v.40, 2010, p. 185.

Lipscomb, W, D.M. Holland, and others, 2009. "A community ice-sheet model for sea level prediction," EOS Trans, American Geophysical Union (AGU), v.09, 23,, 2009.

Joughin, I., B. Smith, and D.M. Holland. "Sensitivity of 21st Century Sea Level to Ocean-Induced Thinning of Pine Island Glacier, Antarctica," Geophysical Research Letters, 2010. 

Holland, D.M., R.H. Thomas, B. deYoung, M.H. Ribergaard, and B. Lyberth. "Acceleration of Jakobshavn Isbrae Triggered by Warm Subsurface Ocean Waters," Nature Geosci, v.28 Sept, 2008. 

Straneo, F., D.A. Sutherland, D. Holland, C. Gladish, G.S. Hamilton, H.L. Johnson, E. Rignot, Y. Xu, and M. Koppes. "Characteristics of ocean waters reaching Greenlandā??s glaciers," Annals. Glaciology, v.53(60), 2012. 

Burton, J.C., J. M. Amundson, D. S. Abbot, A. Boghosian, L. M. Cathles, S. Correa-Legisos, K. N. Darnell, N. Guttenberg, D. M. Holland, and D. R. MacAyeal. "Laboratory investigations of iceberg capsize dynamics, energy dissipation and tsunamigenesis, Antarctica," J. Geophys. Res., v.117,F01, 2012. 

Joughin, I, R.B. Alley, and D.M. Holland. "Ice sheet response to oceanic forcing," Science, v.338(61, 2012, p. 1162. 


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BOOKS/ONE TIME PROCEEDING

Steffen, K., R. Thomas, S. Marshall, G. Cogley, D. Holland, E. Rignot, P. Clark. "Rapid Changes in Glaciers and Ice Sheets and their Impacts on Sea Level", 09/01/2008-08/31/2009, "U.S. Climate Change Science Program (CCSP), Synthesis and Assessment Product (SAP) 3.4.",  2009, "http://www.climatescience.gov/Library/sap/sap3-4/final-report/sap3-4-brochure.pdf".

Steffen, K., R. Thomas, S. Marshall, G. Cogley, D. Holland, E. Rignot, P. Clark. "Rapid Changes in Glaciers and Ice Sheets and their Impacts on Sea Level", 09/01/2009-08/31/2010, "U.S. Climate Change Science Program (CCSP), Synthesis and Assessment Product (SAP) 3.4.",  2009, "http://www.climatescience.gov/Library/sap/sap3-4/final-report/sap3-4-brochure.pdf".

Steffen, K., R. Thomas, S. Marshall, G. Cogley, D. Holland, E. Rignot, P. Clark. "Rapid Changes in Glaciers and Ice Sheets and their Impacts on Sea Level", 09/01/2010-08/31/2011, "U.S. Climate Change Science Program (CCSP), Synthesis and Assessment Product (SAP) 3.4.",  2009, "http://www.climatescience.gov/Library/sap/sap3-4/final-report/sap3-4-brochure.pdf".

Steffen, K., R. Thomas, S. Marshall, G. Cogley, D. Holland, E. Rignot, P. Clark. "Rapid Changes in Glaciers and Ice Sheets and their Impacts on Sea Level", 09/01/2011-08/31/2012, "U.S. Climate Change Science Program (CCSP), Synthesis and Assessment Product (SAP) 3.4.",  2009, "http://www.climatescience.gov/Library/sap/sap3-4/final-report/sap3-4-brochure.pdf".

 

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