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Monitoring CO2 in the Ocean A tool to help scientists understand and predict climate change.

Battelle Seaology® pCO2 Monitoring System

The autonomous Battelle Seaology pCO2 Monitoring System is the first offering in the Battelle Seaology® platform of scientific instrumentation. The system was developed as part of a cooperative effort between Battelle, the Monterey Bay Aquarium Research Institute (MBARI) and the National Oceanic and Atmospheric Association (NOAA).

Currently, NOAA's Pacific Marine Environmental Laboratory has more than 26 pCO2 Monitoring Systems deployed on buoys around the world. NOAA is using this analytical instrument to develop a global array of moored observation systems to determine air-sea flux in support of the Global Ocean Observing System (GOOS).


More and more scientists and technical experts – from academia and wildlife sanctuaries to the oil and gas industry – are charged with monitoring CO2 levels in the ocean. This data is crucial for helping them understand the impact of climate change on aquatic life and ocean acidification.


The autonomous pCO2 Monitoring System provides air and pCO2 measurements for remote ocean environments to help scientists understand and predict climate change. 

The system:

  • Provides time series measurements of ocean carbon and air sea exchange to monitor carbon cycle variability
  • Features a measurement range of 100 to 600 ppm or greater (with an extended range available upon request) and an exceptional precision of about 1 ppm
  • Offers ease of operation, set up and deployment
  • Functions continuously for more than one year without intervention
  • Features two-way satellite data transmission capabilities that control the system and receive data in near real-time


The pCO2 Monitoring System offers a ruggedized design for extended deployment and low maintenance, as well as modular design for interchangeability. 

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