GDP Drifter Data

Satellite-tracked drifting buoys ("drifters") collect measurements of upper ocean currents and sea surface temperatures (SST) around the world as part of the Global Drifter Program. Drifter locations are estimated from 16-20 satellite fixes per day, per drifter. The Drifter Data Assembly Center (DAC) at NOAA's Atlantic Oceanographic and Meteorological Laboratory (AOML) assembles these raw data, applies quality control procedures, and interpolates them via kriging to regular six-hour intervals. The raw observations and processed data are archived at AOML and at the Marine Environmental Data Services (MEDS) in Canada. Two types of data are available: "metadata" contains deployment location and time, time of drogue (sea anchor) loss, date of final transmission, etc. for each drifter. "Interpolated data" contains the quality-controlled, interpolated drifter observations.

卫星追踪漂流浮标（漂流器）作为全球漂流计划的一部分，在全球范围内收集上层海洋环流和海表温度（SST）的测量数据。每个漂流器每天通过16-20次卫星定位来估算其位置。美国国家海洋和大气管理局（NOAA）的大西洋海洋和气象实验室（AOML）的漂流器数据汇编中心（DAC）负责汇编这些原始数据，实施质量控制程序，并通过克里金插值法将其插值到规律性的六小时间隔。原始观测数据和经过处理的数据分别存档于AOML和加拿大海洋环境数据服务（MEDS）。数据提供两种类型：“元数据”包含每个漂流器的部署位置和时间、海锚（船锚）丢失时间、最后传输日期等信息。而“插值数据”则包含经过质量控制并插值后的漂流器观测数据。