You are here


Redesign of the central processing unit for the Seaology® pCO2 system.

The system history:

In 2004, the National Oceanic and Atmospheric Administration (NOAA) Climate Program Office (CPO) initiated a program to evaluate air-sea carbon dioxide (CO2) fluxes through high-resolution, time-series measurements of atmospheric boundary layers and surface ocean CO2 partial pressure (pCO2). To meet this new requirement NOAA’s Pacific Marine Environmental Lab (PMEL) needed a cost effective, rugged, accurate CO2 sensor that was easier and cheaper to deploy and maintain than existing sensor technology. In 2009, PMEL partnered with Battelle to manufacture a sensor that collects CO2 data from surface seawater and marine boundary air. Battelle began producing the pCO2 sensor system as part of our Seaology® platform [1]. Today, the commercially available sensor collects data every three hours for 12 to 18 months before requiring service. It transmits daily summary files of its measurements back to clients to be examined, analyzed, and posted to the web in near-real time for review by the global scientific community.


The Seaology® pCO2 system was designed around a control unit that was already in use for several projects at the time. Since that time the technology has become obsolete and there is a desire to update the central processing unit (CPU) for the Seaology® pCO2 system.

Students working on the project are redesigning the Seaology® pCO2 CPU circuit card assembly (CCA) maintaining the current CPU CCAs functionality and interfaces. Firmware is being written for the CPU CCA for it to maintain the same function as the current system. Consideration for manufacturing are also taken into consideration and any designs will go through a design review to confirm this. 



Project Sponsored by:

Battelle - Maritime Systems & Technologies