Research database

Project information
Project title
Elaboration of a Ferrybox based system for the ocean acidification parameters measurements
Year
2011/2012
Project leader
Kai Sørensen, NIVA
Participants
  • Kai Sørensen, NIVA (Project leader)
  • Evgeniy Yakushev, NIVA

Collaboration with Helmholtz Zentrum Geestacht (HZG), Germany. Collaboration agreement with the Franatech company for sensor development.

Flagship

Ocean acidification, Theme: Processes related to the Arctic and the sea ice

Summary of Results
Project will elaborate the use of a Ferrybox based system for measurements of ocean
acidification parameters. Two variables that of high value to make automatic
measurements are the pH with the sensitive spectrophotometric method and pCO2
with new membrane technology and solid state detectors. The systems must work
automatic in and together with a Ferrybox system. Leave alone the continues
measurements of pCO2 and pH the Ferrybox system will allow to perform discrete
sampling for Alkalinity. The line between Tromsø and Svalbard are the target for the
installation, with a test period on a ship in the Skagerrak where other similar systems
will be in operation (HZG). This makes it possible to compare different systems (e.g. Jerico
project) and one is close to the German company that is developing e.g. the pCO2 system.
The performed 2011 experimental studies were targeted in comparison of the pH
measurements with different techniques: potentiometric (NBS/NIST scale) and
spectrophotometric (total scale). The collected data will allow to elaborate statistical
correlations between these 2 techniques necessary for using the archive pH(NBS) data
for the interannual and multidecadal pH changes estimates. An automatic version of
the pH(tot) will be designed and tested early 2012.
The pCO2 systems will be developed at the Franatech company in Germany in close
cooperation with NIVA. An agreement of cooperation as been set up between NIVA and
Franatech. Within the marine acidification flagship we have discussed the present
technology and we will prepare for an intercomparison of different systems including
the G.O. system used by IMR and BCCR on the research vessel G.O. Sars in the Barents
Sea. A target goal for the accuracy of pCO2 is set to 1 ppm. The system will be
operated with an Labview software that also operate the Ferrybox. A design review
meeting will be held early December and will be installed for testing in end of
December.
 
Project will elaborate the use of a Ferrybox based system for measurements of ocean
acidification parameters. Two variables that of high value to make automatic
measurements are the pH with the sensitive spectrophotometric method and pCO2
with new membrane technology and solid state detectors. The systems must work
automatic in and together with a Ferrybox system. Leave alone the continues
measurements of pCO2 and pH the Ferrybox system will allow to perform discrete
sampling for Alkalinity. The line between Tromsø and Svalbard are the target for the
installation, with a test period on a ship in the Skagerrak where other similar systems
will be in operation (HZG). This makes it possible to compare different systems (e.g. Jerico
project) and one is close to the German company that is developing e.g. the pCO2 system.
The performed 2011 experimental studies were targeted in comparison of the pH
measurements with different techniques: potentiometric (NBS/NIST scale) and
spectrophotometric (total scale). The collected data will allow to elaborate statistical
correlations between these 2 techniques necessary for using the archive pH(NBS) data
for the interannual and multidecadal pH changes estimates. An automatic version of
the pH(tot) will be designed and tested early 2012.
The pCO2 systems will be developed at the Franatech company in Germany in close
cooperation with NIVA. An agreement of cooperation as been set up between NIVA and
Franatech. Within the marine acidification flagship we have discussed the present
technology and we will prepare for an intercomparison of different systems including
the G.O. system used by IMR and BCCR on the research vessel G.O. Sars in the Barents
Sea. A target goal for the accuracy of pCO2 is set to 1 ppm. The system will be
operated with an Labview software that also operate the Ferrybox. A design review
meeting will be held early December and will be installed for testing in end of
December.
 
Published Results/Planned Publications

When the test period is finished the results are planned for publication Journal.

Communicated Results

The results of the new spectrophotometric pH method are used in the acidification subprogram in KLIFs "Tilførselsprosjekt".

Interdisciplinary Cooperation

The project is discussed with partners within the Ocean Acidification flagship and the systems will be compared to systems operated by the partners.

Budget in accordance to results

It will make it possible to transfere the methods to the Barents Sea Ferrybox systems when the testing is ready.

These kind of developments need a funding for good testing and validation and the funding has supported this.

If Yes
If one succeed to meet the goal of 1 ppm accuracy for pCO2 this will be of high value for NIVA and the company that has designed the prototype.
 
If one succeed to meet the goal of 1 ppm accuracy for pCO2 this will be of high value for NIVA and the company that has designed the prototype.
 
Conclusions

a) Indicate future research and/or perspectives which the project results have led to

If the two new methods that are under developments and testing within the project this could be the basis for a long tem study of marine acidification for e.g. Klif monitoring programs.

b) List and describe new methods or techniques that have been developed during the project or that the project has revealed a need for.

Improvement of an spectrophotometric pH method to be prepared for an automatic system onboard a Ferrybox systems. Development of a prototype pCO2 system for studying marine acidification.