| Contributors | Affiliation | Role |
|---|---|---|
| Goyet, Catherine | Universite de Perpignan | Principal Investigator |
| Hansell, Dennis | University of Miami Rosenstiel School of Marine and Atmospheric Science (UM-RSMAS) | Principal Investigator |
| Peltzer, Edward T. | Monterey Bay Aquarium Research Institute (MBARI) | Principal Investigator, Co-Principal Investigator |
| Carlson, Craig A. | University of California-Santa Barbara (UCSB) | Co-Principal Investigator |
| Chandler, Cynthia L. | Woods Hole Oceanographic Institution (WHOI BCO-DMO) | BCO-DMO Data Manager |
Total organic carbon (TOC) from CTD casts from RVIB Nathaniel B. Palmer, R/V Roger Revelle NBP-97-3, KIWI6, KIWI7, KIWI8, KIWI9 cruises in the Southern Ocean, 1997-1998.
| Parameter | Description | Units |
| event | event number, from event log | |
| sta | station number, from event log | |
| cast | CTD cast number | |
| bot | CTD rosette bottle number | |
| depth_n | nominal or target sample depth | meters |
| TOC | total organic carbon | micromoles C/liter |
| TOC_kg | total organic carbon | micromoles C/kilogram |
| sta_name | station name | |
| qflag_TOC | data flag (0=suspect data,1=good data) |
| 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. |
| Website | |
| Platform | RVIB Nathaniel B. Palmer |
| Report | |
| Start Date | 1997-04-04 |
| End Date | 1997-05-11 |
| Description | Ross Sea Process Study 3 Methods & Sampling PI: Edward Peltzer of: Woods Hole Oceanographic Institution (WHOI) as of mid-1998: Monterey Bay Aquarium Research Institute (MBARI) at sea analysts: Edward Peltzer and Thomas Kirchleckner (UO/NZ) dataset: Total organic carbon from CTD casts dates: April 08, 1997 to May 05, 1997 location: N: -63.5023 S: -77.9319 W: 168.9281 E: -176.1451 project/cruise: AESOPS/NBP97-3 - Ross Sea Process Cruise 3 ship: R/V Nathaniel B. Palmer Methodology |
| Website | |
| Platform | R/V Roger Revelle |
| Report | |
| Start Date | 1997-10-20 |
| End Date | 1997-11-24 |
| Description | Polar Front Survey I. Additional information about this cruise can be found at https://usjgofs.whoi.edu/aesops/aboutrr6.html Methods & Sampling PI: Catherine Goyet (WHOI) & Edward Peltzer (MBARI) of: Woods Hole Oceanographic Institution & Monterey Bay Aquarium Research Institute dataset: Total organic carbon from CTD casts dates: October 23, 1997 to November 18, 1997 location: N: -56.9998 S: -62.341 W: -171.9 E: -168.0622 project/cruise: AESOPS/RR_KIWI6 - APFZ Polar Front Survey I Cruise ship: R/V Roger Revelle at sea analysts: Catherine Goyet (WHOI) and Thomas Kirchlechner (UO/NZ). Methods reported in: Peltzer, Edward T. (1993). Shipboard determination of total organic carbon by a high temperature combustion/direct injection technique. U.S. Joint Global Ocean Flux Study - [Equatorial Pacific Protocols, 1993, section 21A]. Alternatively, see: Chapter 16 of the JGOFS Data Protocols. Determination of Dissolved Organic Carbon by a High Temperature Combustion/Direct Injection Technique. [JGOFS Report Nr. 19]. The EqPac methods were followed explicity on the APFZ Survey I cruise with three exceptions: 1. Low carbon water (LCW) prepared onboard ship using a commercial NanoPure (R) UV/TOC system was used to measure the instrument blank as opposed to the carbon free distilled water (CFDW) that was used in EqPac. 2. The LCW prepared onboard was checked against LCW prepared at WHOI using a Milli-Q UV/TOC (R) system and shipped to New Zealand in glass bottles. This water was assigned a background TOC concentration of zero. 3. Arabian sea deep water was used to prepare the daily calibration standards. This water has a background TOC concentration of 42.3 uMC. |
| Website | |
| Platform | R/V Roger Revelle |
| Report | |
| Start Date | 1997-12-02 |
| End Date | 1998-01-03 |
| Description | Polar Front Process I. Additional information about this cruise can be found at https://usjgofs.whoi.edu/aesops/aboutrr7.html Methods & Sampling PI: Dennis Hansell and Craig Carlson of: Bermuda Biological Station for Research dataset: Total organic carbon (TOC) from CTD casts dates: December 04, 1997 to December 26, 1997 location: N: -53.0292 S: -64.7418 W: -174.7295 E: -168.8325 project/cruise: AESOPS/KIWI-7 - APFZ Polar Front Process 1 Cruise ship: R/V Roger Revelle Methodology PI Note: Polar Front samples were not filtered, therefore these analyses are of total organic carbon and not dissolved organic carbon. |
| 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: Catherine Goyet (WHOI) & Edward Peltzer (MBARI) of: Woods Hole Oceanographic Institution & Monterey Bay Aquarium Research Institute dataset: Total organic carbon from CTD casts dates: January 12, 1998 to January 28, 1998 location: N: -57 S: -67.52 W: -170.1117 E: -169.9983 project/cruise: AESOPS/RR_KIWI8 - APFZ Polar Front Survey II Cruise ship: R/V Roger Revelle at sea analysts: Greg Eischeid (WHOI). Methods reported in: Peltzer, Edward T. (1993). Shipboard determination of total organic carbon by a high temperature combustion/direct injection technique. U.S. Joint Global Ocean Flux Study - [Equatorial Pacific Protocols, 1993, section 21A]. Alternatively, see: Chapter 16 of the JGOFS Data Protocols. Determination of Dissolved Organic Carbon by a High Temperature Combustion/Direct Injection Technique. [JGOFS Report Nr. 19]. The EqPac methods were followed explicity on the APFZ Survey I cruise with three exceptions: 1. Low carbon water (LCW) prepared onboard ship using a commercial NanoPure (R) UV/TOC system was used to measure the instrument blank as opposed to the carbon free distilled water (CFDW) that was used in EqPac. 2. The LCW prepared onboard was checked against LCW prepared at WHOI using a Milli-Q UV/TOC (R) system and shipped to New Zealand in glass bottles. This water was assigned a background TOC concentration of zero. 3. Arabian sea deep water was used to prepare the daily calibration standards. This water has a background TOC concentration of 42.3 uMC. |
| 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: Dennis Hansell and Craig Carlson of: Bermuda Biological Station for Research dataset: Total organic carbon (TOC) from CTD casts dates: February 15, 1998 to March 15, 1998 location: N: -52.967 S: -71.3157 W: -174.7693 E: -165.9143 project/cruise: AESOPS/KIWI-9 - APFZ Polar Front Process 2 Cruise ship: R/V Roger Revelle Methodology PI Note: Polar Front samples were not filtered, therefore these analyses are of total organic carbon and not dissolved organic carbon. |
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).