Turbulence measurements performed in the North Atlantic during the James Cook cruise JC087, March 2013

During the cruise the turbulence probe MSS050 was used for microstructure measurements. The profiler is produced by Sea and Sun Technology GmbH in co-operation with ISW Wassermesstechnik. The probe was equipped with 2 velocity microstructure shear sensors, a microstructure temperature sensor, standard CTD sensors for precision measurements, a vibration control sensor, a two component tilt sensor, a fluorescence sensor and surface detection sensor (SD) to indicate the water surface hit at rising measurements. The sampling rate for all sensors is 1024 samples per second, the resolution 16 bit. During the MSS measurements, the ship was moving with speed approx. 0.5-1.0 knots with respect to the water against the wind. In order to take into account the intermittent nature of marine turbulence, repeated MSS measurements were carried out in bursts of typically 10 profiles per station. The measurement interval was approximately 7 (10) min for a profile to 140 (200) dbar. During JC87 cruise 8 series of turbulence measurements were conducted. Fluorescence data was obtained on the 5 of them.本航次采用湍流探针MSS050开展微结构测量。该剖面仪由Sea and Sun Technology GmbH与ISW Wassermesstechnik联合研制生产。该探针搭载2个速度微结构剪切传感器、1个微结构温度传感器、用于高精度测量的标准温盐深（CTD）传感器、振动控制传感器、双分量倾斜传感器、荧光传感器，以及用于在上升测量中指示触碰水面的水面检测传感器（SD）。所有传感器的采样率均为1024样本/秒，分辨率为16比特。 在MSS测量期间，船舶以约0.5~1.0节的航速逆风航行于水面。为兼顾海洋湍流的间歇性特征，每次测站均以典型的10个剖面为一组开展重复MSS测量。单剖面至140（200）分巴的测量间隔约为7（10）分钟。在JC87航次中，共开展8组湍流测量，其中5组获取了荧光数据。