|Title||PIs||CoPI(s)||Other Project Members||Start Date||End Date||Abstract||Programs||Funding Agency||Implementation Categories||Keywords||Region||Grant/Project Funding Amount||Project Identifer(s)||Project Web Link||Weblink to data and/or metadata||Outreach/Education Description|
|Collaborative Research: IPY: Arctic Great Rivers Observatory (Arctic-GRO)|
Bruce Peterson (email@example.com)
The Arctic Great Rivers Observatory (Arctic-GRO) project will assess river constituent (chemistry, isotopes, nutrients) fluxes and discharge in the Ob', Yenisey, Lena, Kolyma, Yukon and Mackenzie Rivers. These observations will be used to test hypotheses about the magnitude, controls and ecological significance of these fluxes, and will provide new information on inter-annual variability and trends in the major fluxes of constituents to the Arctic Ocean. By measuring the flux of water and constituents in these key rivers at the junction between the continents and the Arctic Ocean, it is possible to efficiently assess changes occurring across vast regions of the continents that may diagnose environmental change on land, and forecast imminent changes in circulation and biogeochemical processes in the Arctic and North Atlantic oceans. Monitoring the great arctic rivers is an essential component of any comprehensive Arctic Observatory program and is critical for understanding environmental change in the Arctic, a goal of SEARCH. The data collection will represent a pulse of activity within the IPY timeframe and will provide a legacy of data for future investigations. Arctic-GRO is based upon strong scientific collaborations among US, Canadian and Russian scientists. It also represents a major component of the Arctic Circumpolar Coastal Observatory Network (ACCO-Net), an overarching IPY initiative designed to link key coastal erosion monitoring sites established as part of the international Arctic Coastal Dynamics project with major arctic river sampling sites established as part of the NSF Freshwater Integration (FWI) study. The project will link with and extend the Student Partners Project, a science and education effort involving K-12 students and their teachers at each sampling site. Teachers and their students are educated in global change and in turn collect river samples of selected constituents at higher frequencies than would otherwise be possible, thereby improving the science.
|Arctic Observing Network||National Science Foundation|
North Atlantic Ocean
|An Observational Array for High Resolution, Year-Round Measurements of Volume, Freshwater, and Ice Flux Variability in Davis Strait|
Craig Lee (firstname.lastname@example.org)
This study will use an integrated observing system that will provide year-round measurements of volume, liquid freshwater and ice fluxes across Davis Strait. Fluxes through the Strait represent the net integrated Canadian Archipelago through flow, modified by terrestrial inputs and oceanic processes during its southward transit through Baffin Bay. This study will be part of a coordinated international effort to quantify (and eventually monitor) the variability of fluxes connecting the Arctic and Atlantic Oceans and to understand the role played by the Arctic and sub-Arctic in steering decadal scale climate variability. The system will employ complementary techniques, combining mature technologies with recent developments in autonomous gliders (presently undertaking their first extended science missions) to address all aspects of flow through Davis Strait, including some measurements that have not previously been technologically feasible. The components of the proposed system include: A sparse array of subsurface moorings, each instrumented with an upward looking sonar, an Acoustic Doppler Current Profiler (ADCP) and a single conductivity-temperature (CT) sensor. These will provide a time series of upper ocean currents, ice velocity and ice thickness. These measurements will then be used to estimate the ice component of freshwater flux, provide an absolute velocity reference for geostrophic shears calculated from Seaglider hydrographic sections, and derive error estimates for lower-frequency flux calculations. Trawl and iceberg resistant bottom landers, instrumented with ADCPs and CT sensors, will be deployed across the Baffin and Greenland shelves to quantify variability associated with strong, narrow coastal flows. Acoustically navigated Seagliders will provide year-round, repeated, high-resolution hydrographic sections across the Strait. The combination of emerging and existing technologies implemented in the observing system may serve as a prototype for accurate long-term monitoring of freshwater and ice fluxes in high latitude environments subject to seasonal or permanent ice cover. Acoustically navigated autonomous gliders capable of extended missions in ice covered environments will provide a significant new observational tool, opening important regions of high latitude oceans to intensive measurement programs.
|Arctic Observing Network||National Science Foundation||Observing Change|
|Nansen-Amundsen Basin Observational System (NABOS)|
Igor Polyakov (email@example.com)
The overall purpose of the project is to provide a quantitative observationally based assessment of circulation, water mass transformations, and transformation mechanisms in the Eurasian (NABOS) and Canadian (CABOS) Basins of the Arctic Ocean.
The major objectives of this project are the following:
To quantify the structure and variability of the circulation in the upper, intermediate, and lower layers of the Eurasian and Canadian Basins;
To evaluate mechanisms by which the Atlantic Water is transformed on its pathway along the slope of the Eurasian and Canadian Basins;
To evaluate the impact of heat transport from the Atlantic Water on ice;
To investigate the strength and variability of the Fram Strait and the Barents Sea branches of the Atlantic Water;
To estimate the rate of exchange between the arctic shelves and the interior in order to clarify mechanisms of the arctic halocline formation;
To evaluate the storage and variability of heat and fresh water, particularly within the halocline of the Canada Basin;
To quantify Pacific water transport, variability, and water-mass transformation mechanisms from the Chukchi Sea shelf toward the Eurasian Basin.
Japan Marine Science and Technology Center
National Oceanic and Atmospheric Administration
National Science Foundation
Office of Naval Research
|IPY: Observing the Dynamics of the Deepest Waters in the Arctic Ocean|
Mary-Louise Timmermans (Mary-Louise.Timmermans@Yale.edu)
Funds are provided to support field research and analysis that will begin to develop an understanding of the dynamics and properties of the deep waters of the Canada Basin. The work builds on preliminary deep mooring observations near 2500-m depth that suggest a dynamically active environment in these deep waters, not the quiet basin previously assumed. The aim of the proposed work is to observe the horizontal and vertical motion in the deep Canada Basin over one year. To this end, the co-PIs will add instruments to the deep portion of two moorings that are scheduled to be deployed in the Canada Basin for one IPY year (2007-2008). The additional instruments will record velocity, pressure, temperature, and salinity below 2200 m. These will provide long time-series measurements in the deep Canada Basin, and will be a vital component of the "snapshot in time" of the state of the Arctic Ocean between 2007 and 2009.
Arctic Observing Network
International Polar Year
|National Science Foundation|
|Canadian Basin||$204,406||Continuing Grant 0632201||http://www.eol.ucar.edu/projects/aon-cadis/projects/|