Ocean Biogeochemical Sensing (OBS) OverviewTeamProjectsPublicationsLatest NewsTechnologiesData Ocean biogeochemical cycles are going through profound changes due to human activity. Oxygen content is decreasing, and the ocean is getting more acidic from absorbing excess human emitted CO2 (ocean acidification). The surface ocean is warming and becoming more stratified, potentially reducing nutrients that are available for phytoplankton growth. These changes have the potential to fundamentally alter ocean function, and impact societies that rely on a healthy ocean. However, our ability to understand and monitor these biogeochemical cycles, and predict how they will change, is limited by our ability to measure key parameters at the necessary spatial and temporal resolutions. This “undersampling” problem has plagued oceanographers from the inception of the field.The main focus of the Ocean Biogeochemical Sensing team revolves around this central question: How do we make enough observations of the ocean to effectively understand how it works and how it is changing? Our approach is to develop and implement biogeochemical sensing technology to address this problem, which crosses all disciplines of oceanography. We take a multi-pronged approach that includes developing new or improving existing sensing technology, developing robust calibration protocols to ensure interoperable data across multiple platforms, and utilizing these emerging technologies to better understand ocean biogeochemical processes. Our team works closely with the Chemical Sensor Team Team Directory Yui Takeshita Scientist Principal Investigator Joseph Warren Research Technician Jacki Long Research Technician Marguerite Blum Research Technician Magdalena Carranza Research Associate Irene Hu Electrical Engineer Lenka O’Connor Sraj Postdoctoral Fellow Brent Jones Electrical Engineer Thom Maughan Senior Software Engineer Scott Jensen Senior Electrical Engineer Projects All Projects Southern Ocean Carbon and Climate Observations and Modeling (SOCCOM) Project Southern Ocean Carbon and Climate Observations and Modeling (SOCCOM) SOCCOM is an NSF-sponsored program focused on unlocking the mysteries of the Southern Ocean and determining its influence on climate. Global Ocean Biogeochemistry Array (GO-BGC) Project Global Ocean Biogeochemistry Array (GO-BGC) The Global Ocean Biogeochemistry (GO-BGC) Array is a project to build a global network of chemical and biological sensors that will monitor ocean health. Biogeochemical Gliders Project Biogeochemical Gliders Working to equip biogeochemical sensors on underwater gliders. Coral Reef Metabolism Project Coral Reef Metabolism Developing autonomous systems to measure coral reef metabolism. Publications All Publications Stoer, A. C., Y. Takeshita, T. L. Maurer, C. Begouen Demeaux, H. C. Bittig, E. Boss, H. Claustre, C. Gordon, B.J. Greenan, K. S. Johnson, E. Organelli, R. Sauzède, C. M. Schmechtig, and K. Fennel. 2023. A census of quality-controlled Biogeochemical-Argo float measurements. Frontiers in Marine Science, 10, 1233289. https://doi.org/10.3389/fmars.2023.1233289 Roemmich, D., L. Talley, N. Zilberman, E. Osborne, K.S. Johnson, L. Barbero, H.C. Bittig, N. Briggs, A.J. Fassbender, G.C. Johnson, B.A. King, E. McDonagh, S. Purkey, S. Riser, T. Suga, Y. Takeshita, V. Thierry, and S. Wijffels. 2021. The Technological, Scientific, and Sociological Revolution of Global Subsurface Ocean Observing. Oceanography, 34: 2–8. https://doi.org/10.5670/oceanog.2021.supplement.02-02 Traiger, S.B., B. Cohn, D. Panos, M. Daly, H.K. Hirsh, M. Martone, I. Gutierrez, D.A. Mucciarone, Y. Takeshita, S.G. Monismith, R.B. Dunbar, and K.J. Nickols. 2022. Limited biogeochemical modification of surface waters by kelp forest canopies: Influence of kelp metabolism and site-specific hydrodynamics. Limnology and Oceanography, 67: 392–403. https://doi.org/10.1002/lno.11999 Huang, Y., A.J. Fassbender, J.S. Long, S. Johannessen, and M.B. Bif. 2022. Partitioning the export of distinct biogenic carbon pools in the Northeast Pacific Ocean using a biogeochemical profiling float. Global Biogeochemical Cycles, 36: 1–19. https://doi.org/10.1029/2021GB007178 Evans, W., G.T. Lebon, C.D. Harrington, Y. Takeshita, and A. Bidlack. 2022. Marine CO2 system variability along the northeast Pacific Inside Passage determined from an Alaskan ferry. Biogeosciences, 19: 1277–1301. https://doi.org/10.5194/bg-19-1277-2022 Latest News All News News Seagrasses turn back the clock on ocean acidification News 03.31.21 News Monitoring ocean acidification in the coastal ocean News 11.17.20 News New $53 million grant to create a world-wide fleet of robotic floats to monitor ocean health News 10.29.20 News New paper shows that increasingly acidic oceans can slow coral-reef growth News 03.28.18 Technologies All Technologies Instrument Deep-Sea DuraFet Technology Deep-Sea DuraFet A pressure tolerant ISFET pH sensor. Data All Data Sorry, no results were found. GliderVIZData portal for biogeochemical spray gliders
Southern Ocean Carbon and Climate Observations and Modeling (SOCCOM) Project Southern Ocean Carbon and Climate Observations and Modeling (SOCCOM) SOCCOM is an NSF-sponsored program focused on unlocking the mysteries of the Southern Ocean and determining its influence on climate.
Global Ocean Biogeochemistry Array (GO-BGC) Project Global Ocean Biogeochemistry Array (GO-BGC) The Global Ocean Biogeochemistry (GO-BGC) Array is a project to build a global network of chemical and biological sensors that will monitor ocean health.
Biogeochemical Gliders Project Biogeochemical Gliders Working to equip biogeochemical sensors on underwater gliders.
Coral Reef Metabolism Project Coral Reef Metabolism Developing autonomous systems to measure coral reef metabolism.
Stoer, A. C., Y. Takeshita, T. L. Maurer, C. Begouen Demeaux, H. C. Bittig, E. Boss, H. Claustre, C. Gordon, B.J. Greenan, K. S. Johnson, E. Organelli, R. Sauzède, C. M. Schmechtig, and K. Fennel. 2023. A census of quality-controlled Biogeochemical-Argo float measurements. Frontiers in Marine Science, 10, 1233289. https://doi.org/10.3389/fmars.2023.1233289
Roemmich, D., L. Talley, N. Zilberman, E. Osborne, K.S. Johnson, L. Barbero, H.C. Bittig, N. Briggs, A.J. Fassbender, G.C. Johnson, B.A. King, E. McDonagh, S. Purkey, S. Riser, T. Suga, Y. Takeshita, V. Thierry, and S. Wijffels. 2021. The Technological, Scientific, and Sociological Revolution of Global Subsurface Ocean Observing. Oceanography, 34: 2–8. https://doi.org/10.5670/oceanog.2021.supplement.02-02
Traiger, S.B., B. Cohn, D. Panos, M. Daly, H.K. Hirsh, M. Martone, I. Gutierrez, D.A. Mucciarone, Y. Takeshita, S.G. Monismith, R.B. Dunbar, and K.J. Nickols. 2022. Limited biogeochemical modification of surface waters by kelp forest canopies: Influence of kelp metabolism and site-specific hydrodynamics. Limnology and Oceanography, 67: 392–403. https://doi.org/10.1002/lno.11999
Huang, Y., A.J. Fassbender, J.S. Long, S. Johannessen, and M.B. Bif. 2022. Partitioning the export of distinct biogenic carbon pools in the Northeast Pacific Ocean using a biogeochemical profiling float. Global Biogeochemical Cycles, 36: 1–19. https://doi.org/10.1029/2021GB007178
Evans, W., G.T. Lebon, C.D. Harrington, Y. Takeshita, and A. Bidlack. 2022. Marine CO2 system variability along the northeast Pacific Inside Passage determined from an Alaskan ferry. Biogeosciences, 19: 1277–1301. https://doi.org/10.5194/bg-19-1277-2022
News New $53 million grant to create a world-wide fleet of robotic floats to monitor ocean health News 10.29.20