< New video series launched: IMOS in MOcean
20.10.2015 04:44 Age: 2 yrs
Category: SOOP, Home Slider, BlueWater, ANMN

IMOS data contributes to a new version of the Surface Ocean CO2 Atlas

SOCAT version 3 brings together 14.5 million quality controlled, surface ocean fCO2 (fugacity of carbon dioxide) observations from 1957 to 2014 for the global oceans and coastal seas.


The SRV Aurora Australis in the Southern Ocean. Dissolved carbon dioxide is continually measured in surface waters on the ship.

The decadal distribution of quality controlled, surface water fCO2 observations, including 4.4 million new fCO2 values in version 3 of SOCAT. (Courtesy of D. Bakker)

The Surface Ocean CO2 Atlas (SOCAT, www.socat.info) is a synthesis activity by the international marine carbon research community, with over 100 contributors.

It improves access to surface water CO2 data by regular releases of quality controlled and documented, synthesis fCO2 (fugacity of carbon dioxide) data products for the global oceans and coastal seas.

SOCAT data products enables the quantification of the ocean carbon sink and ocean acidification and validation of ocean biogeochemical models.

SOCAT version 3 was released on 7 September 2015 during the SOCAT-SOCOM community event preceding the SOLAS Open Science Conference in Kiel, Germany.

SOCAT version 3 brings together 14.5 million quality controlled, surface ocean fCO2 (fugacity of carbon dioxide) observations from 1957 to 2014 for the global oceans and coastal seas. This release for the first time includes well-calibrated sensor data.

SOCAT represents a milestone in research coordination, data access, biogeochemical and climate research and in informing policy. SOCAT data was used in more than 100 peer-reviewed scientific publications since the release of version 1 in 2011. Subjects include year-to-year variability in the global ocean carbon sink, magnitude of carbon sink in coastal and marginal seas, evaluation of CMIP models and ocean acidification research. Visit the SOCAT website for the most up-to-date list of these publications.  SOCAT also informs the annual Global Carbon Budget.

Dr Bronte TIlbrook from CSIRO co-leads the Southern Ocean group in SOCAT. IMOS is a major data contributor to SOCAT, with biogeochemical data collected as a part of the IMOS Ships of Opportunity Biogeochemistry project, and our acidification moorings contributing to the atlas.

The data are available for download as recalculated fCO2 in individual cruise files, as concatenated synthesis files, and as gridded fCO2 means. In addition to the recalculated fCO2 data, the original CO2 data, as reported by the data provider, are available in the individual cruise files. All data sets and data products are citable using DOIs (digital object identifiers). Interactive, online Data Viewers enable easy interrogation and visualization of the SOCAT products. The SOCAT products can be downloaded in a variety of formats, including in Ocean Data View format.

The SOCAT website (http://www.socat.info) provides access to all version 3 products and tools as downloadable files and interactive data viewers.