| Contributors | Affiliation | Role |
|---|---|---|
| Mitchell, B. Gregory | University of California-San Diego (UCSD-SIO) | Principal Investigator |
| Stramski, Dariusz | University of California-San Diego (UCSD-SIO) | Co-Principal Investigator |
| Chandler, Cynthia L. | Woods Hole Oceanographic Institution (WHOI BCO-DMO) | BCO-DMO Data Manager |
| Parameter | Description | Units |
| cruise_id | cruise designation | |
| event | event number from event log | |
| cast_type | CTD = CTD rosette | |
| sta | station number from event log | |
| cast | rosette cast number from event log | |
| bot | rosette bottle number | |
| depth_n | nominal depth | meters |
| as_xxx | soluble absorption coefficient at xxx wavelength | 1/meters |
| Dataset-specific Instrument Name | Niskin Bottle |
| Generic Instrument Name | Niskin bottle |
| Dataset-specific Description | CTD clean rosette (Niskin) bottles were used to collect water samples |
| Generic Instrument Description | A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24, or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc. |
| Dataset-specific Instrument Name | Trace Metal Bottle |
| Generic Instrument Name | Trace Metal Bottle |
| Dataset-specific Description | Trace metal (TM) clean rosette bottles were used to collect water samples. |
| Generic Instrument Description | Trace metal (TM) clean rosette bottle used for collecting trace metal clean seawater samples. |
| Website | |
| Platform | RVIB Nathaniel B. Palmer |
| Report | |
| Start Date | 1997-11-05 |
| End Date | 1997-12-13 |
| Description | Ross Sea Process Study 4
SeaWiFS transmits images to U.S. JGOFS scientists aboard the Palmer, for first time on November 23, 1997. Methods & Sampling PI: Greg Mitchell of: Scripps Institution of Oceanography (UCSD) dataset: Optics - soluble absorption coefficients dates: November 09, 1997 to December 11, 1997 location: N: -60.1622 S: -76.6325 W: 168.9257 E: -169.9655 project/cruise: AESOPS/NBP97-8 - Process 4 cruise ship: R/V Nathaniel B. Palmer Methodology This data is associated with the B. Greg Mitchell, Dariusz Stramski, and Rick A. Reynolds AESOPS proposal entitled: "Optical measurements and modeling to estimate concentrations and fluxes of organic matter within the Southern Ocean" The U.S. JGOFS DMO has compiled a list of event numbers for which there is no corresponding bottle file data. |
| Website | |
| Platform | R/V Roger Revelle |
| Report | |
| Start Date | 1998-01-08 |
| End Date | 1998-02-08 |
| Description | Polar Front Survey II. Additional information about this cruise can be found at https://usjgofs.whoi.edu/aesops/aboutrr8.html Methods & Sampling PI: Greg Mitchell of: Scripps Institution of Oceanography (UCSD) dataset: Optics - soluble absorption coefficients dates: January 12, 1998 to January 28, 1998 location: N: -56.9998 S: -67.7842 W: -170.1117 E: -169.9983 project/cruise: AESOPS/RR-KIWI-8 - APFZ Survey 2 cruise ship: R/V Roger A. Revelle Methodology This data is associated with the B. Greg Mitchell, Dariusz Stramski, and Rick A. Reynolds AESOPS proposal entitled: "Optical measurements and modeling to estimate concentrations and fluxes of organic matter within the Southern Ocean" The U.S. JGOFS DMO has compiled a list of event numbers for which there is no corresponding bottle file data. |
| Website | |
| Platform | R/V Roger Revelle |
| Report | |
| Start Date | 1998-02-13 |
| End Date | 1998-03-19 |
| Description | Polar Front Process II. Additional information about this cruise can be found at https://usjgofs.whoi.edu/aesops/aboutrr9.html Methods & Sampling PI: Greg Mitchell of: Scripps Institution of Oceanography (UCSD) dataset: Optics - soluble absorption coefficients dates: February 16, 1998 to March 14, 1998 location: N: -52.966 S: -71.307 W: -174.732 E: -165.9248 project/cruise: AESOPS/RR-KIWI-9 - APFZ Process 2 cruise ship: R/V Roger A. Revelle Methodology This data is associated with the B. Greg Mitchell, Dariusz Stramski, and Rick A. Reynolds AESOPS proposal entitled: "Optical measurements and modeling to estimate concentrations and fluxes of organic matter within the Southern Ocean" The U.S. JGOFS DMO has compiled a list of event numbers for which there is no corresponding bottle file data. |
The U.S. Southern Ocean JGOFS program, called Antarctic Environment and Southern Ocean Process Study (AESOPS), began in August 1996 and continued through March 1998. The U.S. JGOFS AESOPS program focused on two regions in the Southern Ocean: an east/west section of the Ross-Sea continental shelf along 76.5°S, and a second north/south section of the Southern Ocean spanning the Antarctic Circumpolar Current (ACC) at ~170°W (identified as the Polar Front). The science program, coordinated by Antarctic Support Associates (ASA), comprised eleven cruises using the R.V.I.B Nathaniel B. Palmer and R/V Roger Revelle as observational platforms and for deployment and recovery of instrumented moorings and sediment-trap arrays. The Ross-Sea region was occupied on six occasions and the Polar Front five times. Mapping data were obtained from SeaSoar, ADCP, and bathymetric systems. Satellite coverage was provided by the NASA SeaWiFS and the NOAA/NASA Pathfinder programs.
The United States Joint Global Ocean Flux Study was a national component of international JGOFS and an integral part of global climate change research.
The U.S. launched the Joint Global Ocean Flux Study (JGOFS) in the late 1980s to study the ocean carbon cycle. An ambitious goal was set to understand the controls on the concentrations and fluxes of carbon and associated nutrients in the ocean. A new field of ocean biogeochemistry emerged with an emphasis on quality measurements of carbon system parameters and interdisciplinary field studies of the biological, chemical and physical process which control the ocean carbon cycle. As we studied ocean biogeochemistry, we learned that our simple views of carbon uptake and transport were severely limited, and a new "wave" of ocean science was born. U.S. JGOFS has been supported primarily by the U.S. National Science Foundation in collaboration with the National Oceanic and Atmospheric Administration, the National Aeronautics and Space Administration, the Department of Energy and the Office of Naval Research. U.S. JGOFS, ended in 2005 with the conclusion of the Synthesis and Modeling Project (SMP).