A dataset of hourly sea surface temperature from drifting buoys Scientific Data

A dataset of sea surface temperature (SST) estimates is generated from the temperature observations of surface drifting buoys of NOAA’s Global Drifter Program. Estimates of SST at regular hourly time steps along drifter trajectories are obtained by fitting to observations a mathematical model representing simultaneously SST diurnal variability with three harmonics of the daily frequency, and SST low-frequency variability with a first degree polynomial. Subsequent estimates of non-diurnal SST, diurnal SST anomalies, and total SST as their sum, are provided with their respective standard uncertainties. This Lagrangian SST dataset has been developed to match the existing and on-going hourly dataset of position and velocity from the Global Drifter Program. Grant no. NA20OAR4320472 Grant no. NA20OAR4320278

本数据集为海面温度（sea surface temperature, SST）估算数据集，其数据来源于美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）全球漂流浮标计划（Global Drifter Program）所获取的表层漂流浮标温度观测资料。通过拟合兼具双重表征能力的数学模型，可得到浮标轨迹上固定小时时间步长的海面温度估算值：该模型以三个日频谐波刻画海面温度的日变化特征，同时以一次多项式描述海面温度的低频变化特征。本数据集还提供了非日变化海面温度、日变化海面温度距平，以及二者求和得到的总海面温度的估算结果，并同步给出各估算值对应的标准不确定度。本拉格朗日型海面温度数据集的构建目标，是与全球漂流浮标计划现有的、以及正在持续更新的位置与速度逐小时数据集保持匹配一致。资助编号：NA20OAR4320472、NA20OAR4320278