Submersible Autonomous Sensors for Oceanic Inorganic Carbon Characterization

P·I·德·格兰德普雷(蒙大拿大学)提案#：0327763项目摘要PIS建议开发氢离子总浓度(PHT)和总碱度(TA)的自主传感器。这些测量可以一起使用，或与其他二氧化碳参数结合使用，以量化海洋中溶解的总无机碳和二氧化碳分压。这项拟议的研究将为PHT和TA开发自主传感器，这些传感器将部署在系泊、拉格朗日漂流船和志愿者观测船等自主平台上。PI将试图达到与船上测量相当的精确度和准确度。此外，PIS提议将传感器商业化，并向海洋界提供这些传感器，就像他们对SAMI-CO2所做的那样。TCO2和PCO2都是海洋碳循环模型的关键组成部分，因此，改进的测量系统对于了解海洋在调节大气二氧化碳和气候变暖方面的作用非常重要。拟议的设计源于用于测量海水二氧化碳分压的潜水式自主系泊传感器技术(SAMI-CO2)。与SAMI-CO2一样，“SAMI-pH”和“SAMI-ALK”传感器也基于分光光度的pH测量。所有三个传感器都使用相同的光学设计、电子板和管道组件。通过SunBurst传感器实现这些组件的商用将极大地促进传感器的开发。

P.I. De Grandpre (University of Montana) Proposal #: 0327763Project SummaryThe PIs propose to develop autonomous sensors for total hydrogen ion concentration (pHT) and total alkalinity (TA). These measurements can be used together or in combination with other CO2 parameters to quantify oceanic total dissolved inorganic carbon and the partial pressure of CO2. The proposed research will develop autonomous sensors for pHT and TA that will be deployable on autonomous platforms such as moorings, Lagrangian drifters, and Volunteer Observing Ships. The PIs will attempt to achieve a level of precision and accuracy comparable to shipboard measurements. Furthermore, the PIs propose to commercialize the sensors and make them available to the oceanographic community as they have done with SAMI-CO2. Both TCO2 and pCO2 are critical components of ocean carbon cycle models and therefore, improved measurement systems are important for understanding the oceans' role in regulating atmospheric CO2 and climate warming. The proposed designs derive from the Submersible Autonomous Moored Sensor technology used for measurement of seawater pCO2 (SAMI-CO2). Like SAMI-CO2, the "SAMI-pH" and "SAMI-alk" sensors are based on spectrophotometric pH measurements. All three sensors utilize the same optical design, electronics boards, and plumbing components. The commercial availability of these components through Sunburst Sensors will greatly facilitate development of the sensors.