| Contributors | Affiliation | Role |
|---|---|---|
| Hansell, Dennis | University of Miami Rosenstiel School of Marine and Atmospheric Science (UM-RSMAS) | Principal Investigator |
| Gegg, Stephen R. | Woods Hole Oceanographic Institution (WHOI BCO-DMO) | BCO-DMO Data Manager |
Data Report NBP1302
Dr. Hansell, Dr. Kooyman and Dr. Yuan
RVIB Nathaniel B. Palmer
United States Antarctic Program
Antarctic Support Contractor
Prepared by Julian Race and Chris Linden
Data Report NBP1302
Dr. Hansell, Dr. Kooyman and Dr. Yuan
RVIB Nathaniel B. Palmer
United States Antarctic Program
Antarctic Support Contractor
Prepared by Julian Race and Chris Linden
| Website | |
| Platform | RVIB Nathaniel B. Palmer |
| Report | |
| Start Date | 2013-02-12 |
| End Date | 2013-04-05 |
| Description | Ross Sea, Antarctica (53 days)
RVIB Nathaniel B. Palmer : February-April 2013
McMurdo Station, Antarctica - Punta Arenas, Chile
Project Title: “TRacing the fate of Algal Carbon Export in the Ross Sea” (TRACERS)Chief Scientist: Dennis Hansell, UM-RSMASProject Description: The research focus of this cruise was to investigate the biogeochemistry associated after a phytoplankton bloom at the end of the Antarctic Austral Summer. I helped analyze and coordinate analyses of nutrients (silicic acid, phosphate, and nitrate) and collect samples for dissolved organic carbon (DOC).
Note R2R Link takes user to Marine Geoscience Data System (MGDS):NBP1302
Nathaniel B. Palmer Systems and Specifications |
Sinking particles are a major element of the biological pump and they are commonly assigned to two fates: mineralization in the water column and accumulation at the seafloor. However, there is another fate of export hidden within the vertical decline of carbon, the transformation of sinking organic matter to fine suspended and/or dissolved organic fractions. This process has been suggested but has rarely been observed or quantified. As a result, it is presumed that the solubilized fraction is largely mineralized over short time scales. However, global ocean surveys of dissolved organic carbon are demonstrating a significant water column accumulation of organic matter under high productivity environments. This proposal will investigate the transformation of organic particles from sinking to solubilized phases of the export flux in the Ross Sea. The Ross Sea experiences high export particle production, low dissolved organic carbon export with overturning circulation, and the area has a predictable succession of production and export events. In addition, the basin is shallow (< 1000 m) so the products the PIs will target are relatively concentrated. To address the proposed hypothesis, the PIs will use both well-established and novel biochemical and optical measures of export production and its fate. The outcomes of this work will help researchers close the carbon budget in the Ross Sea.
| Funding Source | Award |
|---|---|
| NSF Division of Polar Programs (NSF PLR) |