A Device for In Situ Calibration of Oxygen Sensors

该项目要求拨款对其原位O2校准设备进行一系列海洋测试，包括在两年内在三个不同的系泊处进行八次现场测试，以确定新校准系统的准确性和海上可靠性。通过构建另外两个校准系统，测试效率将得到优化，以便在系泊系统维修时进行交换。新的原位氧气校准系统将包括目前所做测试建议的适度改进。更广泛的影响：准确和精确的氧气观测对理解生物过程至关重要，最近的工作也表明，氧气可以作为确定pH值（一种极其困难的测量）的代理，对理解海洋中的文石饱和度很重要。这项工作将提供关于氧传感器性能的极有价值的数据，这将有助于对世界各地海洋中配备氧传感器的剖面浮标的氧数据进行实时质量控制，并有助于长期开发研究质量的氧数据库。该项目支持一名全日制研究生。

The PI requests funding to carry out a series of ocean tests of their in situ O2 calibration device This will include eight field tests on three different moorings in two years to determine the accuracy and at-sea reliability of the new calibration system. Testing efficiency will be optimized by constructing two more calibration systems so that they can be swapped when the moorings are serviced. The new in situ oxygen calibration systems will include moderate improvements suggested by the testing done so far. Broader Impacts:Accurate and precise observations of oxygen are crucial to understanding biological processes and recent work also indicates that oxygen can be used as a proxy for determining pH (an extremely difficult measurement) and important to understanding aragonite saturation in the oceans. This work will provide extremely valuable data on the performance of oxygen sensors that will contribute to real-time quality control of oxygen data from profiling floats equipped with oxygen sensors throughout the world's oceans and to the development of a research-quality oxygen database over the long term. The project supports one fulltime graduate student.