1.
2.
Chierici, Melissa, 1968, et al.
(författare)
CaCO3 saturation in the Western Arctic Ocean
2009
Ingår i: Gordon Researcg Conference Polar Marine Science, 15-20 March 2009, Il Ciocco, Italy.
Konferensbidrag (refereegranskat)
3.
4.
5.
Chierici, Melissa, 1968
(författare)
Towards an understanding of the biological forcing of CO2 in the Southern Polar Ocean.
2009
Rapport (övrigt vetenskapligt/konstnärligt) abstract
The aim of this project was to quantitatively investigate the mechanisms driving the oceanic carbon dioxide system and the CO2 air-sea flux in areas of different characteristics regarding water column stratification, ice cover/extent and freshwater input in the Pacific sector of the Southern Ocean. The biogeochemical transformation of carbon was evaluated from CO2 system data and information on water mass properties in the water column. Another goal was to investigate the large natural variability of the marine carbonate system in the study area, to provide basic information needed to predict the response to future changes in the CaCO3 saturation in the Southern Ocean due to changes in sea ice extent and temperature.
6.
Fransson, Agneta, 1964, et al.
(författare)
Continuous pCO2 measurements under the sea ice in Arctic and Antarctic waters onboard an icebreaker.
2007
Ingår i: IOCCP Report from Surface Ocean Surface CO2 Variability and Vulnerabilities Workshop, 11-14th April 2007, UNESCO-IOCCP, Paris, France.. ; 7
Konferensbidrag (övrigt vetenskapligt/konstnärligt) abstract
High-frequency underway pCO2 measurements were successfully performed in the Arctic Ocean in 2005, and in the Antarctic Southern Ocean in 2006 onboard the Swedish I/B Oden. We traversed in both open water and heavy sea ice conditions. The seawater intake was placed at the bow of the ship at approximately 8 meters depth, which enabled immediate under ice measurements in ice covered areas. In both studies, preliminary data showed rapid changes in the pCO2 and oxygen values in the ice zones, which was related to physical fronts and changing sea-ice conditions. However, the under-ice pCO2 levels differed in the two high-latitude oceans, likely due to different ecosystem dynamics involving ice-algae versus pelagic phytoplankton production. Future participation in expeditions to Antarctic Southern Ocean, and a long-term study in the Arctic Ocean in 2007/2008 will enable us to further investigate the biogeochemical dynamics in both Polar seas.
7.
8.
Bakker, D. C. E., et al.
(författare)
A multi-decade record of high-quality fCO(2) data in version 3 of the Surface Ocean CO2 Atlas (SOCAT)
2016
Ingår i: Earth System Science Data. - : Copernicus GmbH. - 1866-3508 .- 1866-3516. ; 8:2, s. 383-413
Tidskriftsartikel (refereegranskat) abstract
The Surface Ocean CO2 Atlas (SOCAT) is a synthesis of quality-controlled fCO(2) (fugacity of carbon dioxide) values for the global surface oceans and coastal seas with regular updates. Version 3 of SOCAT has 14.7 million fCO(2) values from 3646 data sets covering the years 1957 to 2014. This latest version has an additional 4.6 million fCO(2) values relative to version 2 and extends the record from 2011 to 2014. Version 3 also significantly increases the data availability for 2005 to 2013. SOCAT has an average of approximately 1.2 million surface water fCO(2) values per year for the years 2006 to 2012. Quality and documentation of the data has improved. A new feature is the data set quality control (QC) flag of E for data from alternative sensors and platforms. The accuracy of surface water fCO(2) has been defined for all data set QC flags. Automated range checking has been carried out for all data sets during their upload into SOCAT. The upgrade of the interactive Data Set Viewer (previously known as the Cruise Data Viewer) allows better interrogation of the SOCAT data collection and rapid creation of high-quality figures for scientific presentations. Automated data upload has been launched for version 4 and will enable more frequent SOCAT releases in the future. High-profile scientific applications of SOCAT include quantification of the ocean sink for atmospheric carbon dioxide and its long-term variation, detection of ocean acidification, as well as evaluation of coupled-climate and ocean-only biogeochemical models. Users of SOCAT data products are urged to acknowledge the contribution of data providers, as stated in the SOCAT Fair Data Use Statement. This ESSD (Earth System Science Data) "living data" publication documents the methods and data sets used for the assembly of this new version of the SOCAT data collection and compares these with those used for earlier versions of the data collection (Pfeil et al., 2013; Sabine et al., 2013; Bakker et al., 2014).Individual data set files, included in the synthesis product, can be downloaded here: doi:10.1594/PANGAEA.849770. The gridded products are available here: doi: 10.3334/CDIAC/OTG.SOCAT_V3_GRID.
9.
Fransson, Agneta, 1964, et al.
(författare)
CO2 in ice covered seas
2007
Ingår i: Oden Southern Ocean seminar series onboard IB Oden December 2006.
Konferensbidrag (övrigt vetenskapligt/konstnärligt)
10.
Chierici, Melissa, 1968
(författare)
Carbon dioxide in the Arctic Ocean
2009
Ingår i: Japan Swedish Scientific Association workshop, Japan.
Konferensbidrag (övrigt vetenskapligt/konstnärligt) abstract
Large areas of the Arctic shelves are largely unknown with regard to the carbon dioxide system and the processes affecting the air/sea CO2 flux. This is mainly due to sparse information and lack of data as a result of large logistical challenges to conduct measurement programs which are related to the ice cover and harsh conditions in the polar oceans. Lack of information is of great concern since predictions and observations show that the polar areas are the most vulnerable region for a climate change such as a warming. Moreover, the Arctic Ocean is also predicted to be the first to become affected by an increase in ocean CO2 such as ocean acidification. However, there are large uncertainties about the direction and magnitude of the feedback processes involved in the marine system and as well as its coupling with atmospheric forcing. Large efforts in measurement programs have to be performed to be able to gain insight and understanding of the processes governing the CO2 system. One major measuring effort was performed during summer 2005 where the first continuous surface water measurements of fugacity of CO2 (fCO2sw), was performed onboard the IB Oden along the Northwest Passage from Cape Farwell (S. Greenland) to the Chukchi Sea. CO2 system parameters were measured with the aim to investigate the importance of sea ice and river runoff on the spatial variability of fCO2 and the saturation state of calcium carbonate (Ω). The variability in these parameters are related to natural occurring features such as freshwater content, sea ice, biological processes and physical upwelling. This study highlights the value of using high-frequency measurements to gain increased insight into the variable and complex conditions, encountered on the shelves in the Arctic Ocean.
