Measurements of pCO2 and turbulence from an autonomous drifting buoy in summer 2015 in the Baltic Sea during METEOR cruise M117@en

Turbulence and pCO2 data from autonomous, drifting buoy with a floating chamber that will allow us to calculate air-sea CO2 fluxes and gas transfer velocities (k) with high temporal and spatial resolution. The buoy is equipped with a sensor to measure aqueous and atmospheric pCO2, and to monitor the increase or loss of CO2 inside the chamber. A complete cycle lasts 40 minutes, and after flushing the chamber a new cycle is initiated. The buoy can be deployed for more than 12 hours, and at wind speeds of up to 10 m/s. Floating chambers are known to overestimate fluxes due to the creation of additional turbulence at the water surface. We correct fluxes by measuring turbulence with two Acoustic Doppler Velocimeter: one directly underneath the center of the floating chamber and the other one positioned sideways to measure turbulence outside the perimeter of the buoy. […]本数据集包含搭载浮动舱室的自主漂流浮标所采集的湍流与二氧化碳分压（pCO2）数据，可用于高时空分辨率计算海-气二氧化碳通量与气体传输速率（k）。该浮标配备可测量水相及大气相二氧化碳分压的传感器，用以监测舱室内二氧化碳的浓度增减。单次完整循环时长为40分钟，完成舱室冲洗流程后即可启动新一轮循环。该浮标可连续部署超过12小时，适配最大风速达10 m/s的海况。已知浮动舱室会因在水面产生额外湍流，导致通量估算结果偏高。我们采用两台声学多普勒流速仪（Acoustic Doppler Velocimeter）校正通量：一台布放于浮动舱室正下方，另一台侧向布置以测量浮标外围水域的湍流，[…]