|
Award Abstract #0632231
IPY: An Innovative Observational Network for Critical Arctic Gateways--Understanding Exchanges through Davis and Fram Straits
| NSF Org: |
ARC
Arctic Sciences Division
|
|
|
| Initial Amendment Date: |
March 29, 2007 |
|
| Latest Amendment Date: |
May 5, 2009 |
|
| Award Number: |
0632231 |
|
| Award Instrument: |
Continuing grant |
|
| Program Manager: |
Martin Jeffries
ARC Arctic Sciences Division
OPP Office of Polar Programs
|
|
| Start Date: |
April 1, 2007 |
|
| Expires: |
March 31, 2010 (Estimated) |
|
| Awarded Amount to Date: |
$2107643 |
|
| Investigator(s): |
Craig Lee craig@apl.washington.edu (Principal Investigator)
Richard Moritz (Co-Principal Investigator)
Jason Gobat (Co-Principal Investigator)
Kathleen Stafford (Co-Principal Investigator)
|
|
| Sponsor: |
University of Washington
4333 Brooklyn Ave NE
SEATTLE, WA 98195 206/543-4043
|
|
| NSF Program(s): |
AON IMPLEMENTATION
|
|
| Field Application(s): |
|
|
| Program Reference Code(s): |
OTHR, 5296, 5295, 1079, 0000
|
|
| Program Element Code(s): |
5293
|
ABSTRACT
Lee 0632231
University of Washington
Funds are provided in support of a study to understand exchanges across a major gateway linking the Arctic with the subpolar North Atlantic " Davis Strait (Canadian Arctic Archipelago). The proposed study purports to quantify, with robust error estimates, Davis Strait watermass variability, volume, liquid freshwater, heat and ice fluxes at weekly to inter-annual timescales. These measurements will be used to advance understanding of the impacts of these exchanges on large scale characteristics of the Atlantic and Arctic Oceans.
The proposed observation system, currently under development in Davis Strait, employs complementary techniques to resolve critical aspects of the exchange. The system includes:
(1) A sparse array of subsurface moorings, each instrumented with an upward looking sonar, an Acoustic Doppler Current Profiler (ADCP), conductivity-temperature (CT) sensors, and (deep) conventional current meters, will provide time series of upper ocean currents, ice velocity, and ice thickness,
(2) Shelf sites instrumented with ADCPs, CT sensors and an innovative, low-cost package for collecting CT time series in the ice-threatened near-surface region, and
(3) Acoustically navigated Seagliders to provide year-round, repeated, high-resolution hydrographic sections across the straits.
The Davis Strait network will be undertaken in collaboration with the Bedford Institution of Oceanography.
PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH
Vage, K., R.S. Pickart, V. Thierry, G. Riverdin, C.M. Lee, B. Petrie, T.A. Agnew, A. Wong and M.H. Ribergaard. "Surprising Return of Deep Convection to the Subpolar North Atlantic Ocean in Winter 2007 â?? 2008," Nature Geoscience, v.2, 2009, p. 67.
Please report errors in award information by writing to: awardsearch@nsf.gov.
|
