Project: Southern Ocean Gas Exchange Experiment

Acronym/Short Name:

SO_GasEx

Project URL:

Project Web Site

Start Date:

2008-02

End Date:

2008-04

Geolocation:

Southwest Atlantic sector of the Southern Ocean (nominally at 50°S, 40°W, near South Georgia Island)

Programs:

Ocean Carbon and Biogeochemistry [OCB]

United States Surface Ocean Lower Atmosphere Study [U.S. SOLAS]

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Description

The Southern Ocean Gas Exchange Experiment (SO-GasEx; also known as GasEx III) took place in the Southwest Atlantic sector of the Southern Ocean (nominally at 50°S, 40°W, near South Georgia Island) in austral fall of 2008 (February 29-April 12, 2008) on the NOAA ship Ronald H. Brown. SO-GasEX is funded by NOAA, NSF and NASA.

The research objectives for Southern Ocean GasEx are to answer the following questions:

What are the gas transfer velocities at high winds?
What is the effect of fetch on the gas transfer?
How do other non-direct wind effects influence gas transfer?
How do changing pCO2 and DMS levels affect the air-sea CO2 and DMS flux, respectively in the same locale?
Are there better predictors of gas exchange in the Southern Ocean other than wind?
What is the near surface horizontal and vertical variability in turbulence, pCO2, and other relevant biochemical and physical parameters?
How do biological processes influence pCO2 and gas exchange?
Do the different disparate estimates of fluxes agree, and if not why?
With the results from Southern Ocean GasEx, can we reconcile the current discrepancy between model based CO2 flux estimates and observation based estimates?

The SO-GasEx cruise report and Science and Implementation plans, may also be available at the SO-GasEx science Web page.

More Information

Funding

Funding Source	Award Number
National Sciences and Engineering Research Council of Canada	328290-2006
National Aeronautics & Space Administration	NNX08AB73G
National Aeronautics & Space Administration	NNX08AF12G
NSF Antarctic Sciences	PLR-0636744
National Aeronautics & Space Administration	unknown SO_GasEx NASA
National Oceanic and Atmospheric Administration	unknown SO_GasEx NOAA
National Science Foundation	unknown SO_GasEx NSF

Dataset Collections

Dataset Short Name	Full Dataset Title
ADCP - Broad Band	Broad band shipboard ADCP from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
ADCP - Narrow Band	Narrow band shipboard ADCP from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
CDOM Absorption Spectra	CDOM Absorption Spectra from CTD casts from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
CO2 - Discrete pCO2	pCO2 from Niskin bottle samples from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
CO2 - Surface Underway pCO2 Reduced	Surface underway pCO2 from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
CO2 - Underway pCO2 - GO System	Underway pCO2 from GO System from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
Cruise Track	Cruise track from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
CTD - Bottle	Sample bottle measurements from CTD casts from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
CTD - Events	CTD specific events from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
CTD - Profiles	One decibar-averaged CTD profiles from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
CTD - Salinity	CTD salinometer calibrations from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
CTD - Stations	CTD station locations from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
DIC_TA	Final DIC and Total Alkalinity (TA) from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern OceanTo near South Georgia Island in 2008 (SO_GasEx project)
Discrete O2 Ar	Discrete O2 Argon (Ar) from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
Discrete O2 Ar - Sampling Log	Discrete O2 Argon (Ar) sampling log from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
Diurnal GOP	Diurnal Gross Oxygen Production (GOP) from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
DMS Flux	Hourly means for DMS flux, transfer velocity, and associated variables from NOAA Ship Ronald H. Browncruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
Event Log	Scientific sampling event log from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
Inventory	Cruise data inventory from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
MAPCO2 - Buoy	MAPCO2 buoy data deployed on NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
MAPCO2 - SAMI-CO2	SAMI-CO2 data from MAPCO2 buoy deployed on NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
MAPCO2 - Temperature	Temperature logger data from MAPCO2 buoy deployed on NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
Met/Flux Revision 1	Met/Flux data - Revision 1 - from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
Met/Flux Revision 2	Met/Flux data - Revision 2 from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
New Production - N15	Discrete analysis of new production - Nitrogen isotope N15 from NOAA Ship Ronald H. Brown RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
Nutrients	Nutrients from Niskin bottles from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
O2 Rosette	Oxygen Data from Niskin Rosette samples from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
O2 Underway	Oxygen from underway system from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
POC	POC from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
QuikSCAT Sigma-0 Gas Transfer Velocities	Gas transfer velocities (QuikSCAT normalized radar backscatter) from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
SF6 Discrete - Station/Niskin Sort	Sulphur Hexafluoride (SF6) from Station/Niskin bottle sort from NOAA Ship Ronald H. Brown RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
SF6 Underway - Patch 1	Underway Sulphur Hexafluoride (SF6) - Patch 1 from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
SF6 Underway - Patch 2	Underway Sulphur Hexafluoride (SF6) - Patch 2 from NOAA Ship Ronald H. Brown RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
Underway O2 Ar	Underway O2 Argon (Ar) from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)
Underway O2 Ar - Sampling Log	Underway O2 Argon (Ar) sampling log from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)

Deployments

Total: 1

Cruise/Deployment	Platform Type	Start Date	Chief/Co-chief Scientist
RB-08-02	vessel	29 Feb 2008	Christopher L. Sabine David T. Ho

Project Coordinators

Person	Roles	Affiliation
David T. Ho	Lead Principal Investigator	University of Hawaiʻi at Mānoa (SOEST)
Christopher L. Sabine	Co-Principal Investigator	National Oceanic and Atmospheric Administration (NOAA-PMEL)
Burke Hales	Contact	Oregon State University (OSU-CEOAS)
Stephen R. Gegg	BCO-DMO Data Manager	Woods Hole Oceanographic Institution (WHOI BCO-DMO)

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Project: Southern Ocean Gas Exchange Experiment

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