Resolving CO2 System Seasonality in the West Antarctic Peninsula with Autonomous Observations

在大气中二氧化碳吸收增强的条件下，对高纬度水域碱度降低的兴趣已成为最近许多关于极地海洋环境中生物应激源的研究的推动力。该项目旨在通过从南极沿海系泊处获得自主的高频观测资料，提高我们对沿海南大洋碳酸盐物种（二氧化碳系统）的变化及其日变化和年际变化的了解。在现有的帕尔默LTER阵列中，停泊的观测系统将以3小时的频率测量南极半岛西部大陆架地区的pH值、CO2分压、温度、盐度和溶解氧。这种观测将有助于估计南极沿海水域二氧化碳系统季节性变化的主要物理和生物控制因素，包括二氧化碳年净海气交换的迹象、季节性和通量。帕尔默LTER站点正在经历南极西部半岛的快速生态变化，该地区的变暖速度比南极洲沿海的任何其他地区都要快。

Interest in the reduced alkalinity of high latitude waters under conditions of enhanced CO2 uptake from the atmosphere have been the impetus of numerous recent studies of bio-stressors in the polar marine environment. The project seeks to improve our understanding of the variance of coastal Southern Ocean carbonate species (CO2 system), its diurnal and inter-annual variability, by acquiring autonomous, high frequency observations from an Antarctic coastal mooring(s). A moored observing system co-located within the existing Palmer LTER array will measure pH, CO2 partial pressure, temperature, salinity and dissolved oxygen with 3-hour frequency in this region of the West Antarctic Peninsula continental shelf. Such observations will help estimate the dominant physical and biological controls on the seasonal variations in the CO2 system in coastal Antarctic waters, including the sign, seasonality and the flux of the net annual air-sea exchange of carbon dioxide. The Palmer LTER site is experiencing rapid ecological change in the West Antarctic Peninsula, a region that is warming at rates faster than any other region of coastal Antarctica.