SIPCO2: A simple, inexpensive surface water pCO2 sensor.
Average rating votes
Hunt, Christopher W.
Salisbury, Joseph E.
McDowell, William H.
MetadataShow full item record
Efforts to estimate air-water carbon dioxide (CO2) exchange on regional or global scales are constrained by a lack of direct, continuous surface water CO2 observations. Sensor technology for the in situ measurement of the partial pressure of carbon dioxide (pCO2) has progressed, but still poses limitations including expense and biofouling concerns. We describe a simple, inexpensive, in situ pCO2 method (SIPCO2) in which a non-dispersive infrared (NDIR) detector is paired with an air pump in an enclosed housing to produce air-sea equilibration. We first evaluated this approach in a laboratory setting, then in an estuarine-coastal ocean laboratory for several months to continuously monitor aquatic pCO2. An accepted, accurate NDIR-based CO2 measurement technique was employed alongside SIPCO2 to provide an assessment of sensor performance. SIPCO2 allows for lowcost, relatively accurate measurements of pCO2 (mean difference of 2565 latm from validation system after laboratory calib.....
JournalLimnology and Oceanography: Methods
Sustainable Development Goals (SDG)14.a
Essential Ocean Variables (EOV)N/A
CitationHunt, C.W., Snyder, L., Salisbury, J.E., Vandemark, D. and McDowell, W.H. (2017) SIPCO2: A simple, inexpensive surface water pCO2 sensor. Limnology and Oceanography: Methods, 15, pp.291-301. DOI: https://doi.org/10.1002/lom3.10157