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Earth Institute Research Projects

Cape Adare Long Term Moorings (CALM): Analysis Phase

Lead PI: Mr. Bruce A. Huber , Professor Arnold L. Gordon

Unit Affiliation: Ocean & Climate Physics, Lamont-Doherty Earth Observatory (LDEO)

June 2012 - May 2015
Inactive
Antarctica
Project Type: Research

DESCRIPTION: Time series data, from ocean moorings, on key aspects of evolving ocean properties are of considerable importance in assessing the condition of the ocean system. They are needed, for example, their understand how the oceans are warming, and how they continue to uptake greenhouse gases such as CO2.

The Cape Adare Long Term Mooring (CALM) program goal was to observe the bottom water export from the Ross Sea to the deep ocean. To accomplish this two instrumented moorings were set on the continental slope off Cape Adare (western Ross Sea, Antarctica), positioned to capture the export of Antarctic Bottom Water (AABW), some of the coldest and densest water found in the global ocean. Data records for the moorings spans over some four years in this very remote part of the ocean. The CALM analysis will address some specific objectives:

- Characterize the temperature, salinity and current variability associated with the Ross Sea AABW export.

- Examine the linkages between observed variability to regional tides, atmosphere and sea ice forcing.

- Relate the Ross Sea AABW export fluctuations to the larger scale climate system dynamics, such as ENSO and SAM, and to AABW formation along other margins of Antarctica, e.g. the Weddell Sea

SPONSOR:

National Science Foundation (NSF)

FUNDED AMOUNT:

$241,178

EXTERNAL COLLABORATORS:

CLIMA

WEBSITE:

https://www.nsf.gov/awardsearch/showAward?AWD_ID=1141890&HistoricalAwards=false

PUBLICATIONS:

Kohut, Josh Hunter, Elias Huber, Bruce. "Small-scale variability of the cross-shelf flow over the outer shelf of the Ross Sea," Journal of Geophysical Research: Oceans, v.118, 2013, p. 1863-1876. doi:10.1002/jgrc.20090

Gordon, Arnold L. Huber, Bruce A. Busecke, J.. "Bottom water export from the western Ross Sea, 2007 through 2010," Geophysical Research Letters, v.42, 2015. doi:10.1002/2015GL064457

KEYWORDS

data interdisciplinary bottom water export oceans