Effects Of The 2015-2016 El Niño On Currents And Temperatures On The Northern Peruvian Coast

Temperatures and currents were measured using equipment moored on an oil platform (4°26.90' S, 81° 20.13' W) off Talara, Peru. The depth of the platform was 45 m at the center and approximately 50 m around the edge. A thermistor chain (RBRconcerto) with 3 m intervals was moored at the center of the platform to determine variations in the vertical thermal structure. An acoustic Doppler current profiler (ADCP, RDI WH300) was moored on the bottom about 80 m to the west of the platform. The sampling intervals were 10 minutes for the thermistor chain and 30 minutes for the ADCP. The equipment was deployed on 6 December 2014, and maintained until 27 May 2016, for one year and five months. As the mooring line of the thermistor chain was lost, however, the thermistor chain data were obtained until 30 December 2015. To obtain the daily data, a median filter was applied to the raw temperature and a two-day moving average to the raw current data. The data in MATLAB binary format and the explanation file were uploaded.本数据集的温度与海流数据由系泊于秘鲁塔拉腊附近海域石油平台（南纬4°26.90'，西经81°20.13'）的观测设备采集获取。该平台中心水深为45米，边缘区域水深约50米。系泊于平台中心的热敏电阻串（thermistor chain，型号RBRconcerto）以3米间隔布设，用于监测垂向热结构的变化；声学多普勒流速剖面仪（acoustic Doppler current profiler, ADCP，型号RDI WH300）则被系泊于平台西侧约80米的海底。两类设备的采样间隔分别为：热敏电阻串10分钟，ADCP 30分钟。整套观测系统于2014年12月6日布放，原计划持续观测至2016年5月27日，总时长1年5个月。但由于热敏电阻串的系泊缆绳丢失，其观测数据仅获取至2015年12月30日。为生成日尺度数据集，研究人员对原始温度数据采用中值滤波处理，对原始海流数据采用两日滑动平均进行平滑。本数据集以MATLAB二进制格式存储，配套说明文档已一并上传。