Wave Glider Observations of Surface Fluxes and Mixed-layer Processes in the Southern Ocean

南极绕极流(ACC)的表层和上层海洋过程在海洋热量输送、海-气通量(如二氧化碳)和海冰形成过程中起着重要作用。这些因素的网络反过来调节全球气候、海平面上升和全球环流。该项目继续实地开发水面自动驾驶车辆((https://www.liquid-robotics.com/wave-glider/overview/)，以更好地测量和研究偏远南大洋的这些过程，否则很难获得连续数据。由阳光和波浪作用提供动力的移动自主水面车辆提供了一种非常经济高效的方式来解决在遥远的南大洋获得无人值守观测覆盖的问题。该项目将支持PIS正在进行的教育和外展工作，包括学校演示、访问科学中心和开发教材。WaveGlider在导航成功的空间测量和定位时间序列测量方面有着良好的记录，否则不适合居住的水域和海州。这项研究包括增加一些新的测量能力，如(上层混合)CTD绞车、高频声学多普勒湍流系统和生物地球化学叶绿素荧光传感器。这个增强的仪器包将用于一组澳大利亚夏季实验，观察西南极半岛附近的海洋-陆架交换以及锋面空气-海洋相互作用。这一奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

Surface and upper-ocean processes in the Antarctic Circumpolar Current (ACC) play an important role in ocean heat transport, air-sea gas fluxes (such as pCO2) and in sea-ice formation. The net of these in turn modulate global climate, sea level rise and global circulation. This project continues the field development of a surface autonomous vehicle (https://www.liquid-robotics.com/wave-glider/overview/ ) to better measure and study these processes in the remote Southern Ocean, where continuous data is otherwise very difficult to obtain. Mobile autonomous surface vehicles, powered by sunlight and wave action provide a very cost effective manner of solving the problem of obtaining unattended observational coverage in the remote Southern Ocean. The project will support ongoing education and outreach efforts by the PIs including school presentations, visits to science centers and the development of educational materials.The WaveGlider has an established track record of navigating successful spatial surveys and positioned time series measurements in otherwise inhospitable waters and sea-states. The study includes the addition of some new measurement capabilities such as an (upper mixed) layer profiling CTD winch, a high frequency acoustic Doppler turbulence system, and a biogeochemical chlorophyll fluorescence sensor. This augmented instrumentation package will be used for a set of Austral summer season experiments observing ocean-shelf exchange along with frontal air-sea interactions in the vicinity of the West Antarctic Peninsula.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.