Polar Ocean dataset (Cryosat-2)

Arctic and Antarctic Cryosat-2 Polar datasetThe files contain the Cryosat-2 sea surface height data for the Arctic and Antarctic regions for the period 2010.5 until 2019.12.Data can be used to study ocean tides or sea level variations. The data have been formatted for the use of tidal studies and have been used to derive the DTU23 ocean tide model (also available)Processing and retracking of the Cryosat-2 data are described in the associated paper.Data are processed to remove the DTU21MSS and the FES2014 elastic ocean tide signal. The processing is done on the full 20 Hz data on a track-by-track basis to allow extraction of sea surface height in leads. Each observation in the file represents the mean(ssh) and standard deviation for a crossing of a cell of size 0.5 latitude by 3.0 latitude.The format is the following(given with a data example)196 -57.126127 14.598178 805854109.666172 -0.046690 0.106288 -114 4 5label, latitude, longitude, time sec from (01.01.1985 00:00i) average sea level, standard deviation of sea level,The three indexes at the end are: box number (latitude), box number (long), and number of points averaged. Box latitude of -114 corresponds to the cell between -57.0 and -57.5 due to the 0.5 degree avearaging.The dataset contains the combined Cryosat-2 dataset. This means both LRM,SAR and SARin data. Individual SAR/SIN/LRM datasets is also available in the same format by contact to the author.The file c2data illustrate the amount of times valid averaged sea level observations are available for each geographical cell.

北极与南极 Cryosat-2 极地数据集该数据集包含 Cryosat-2 船舶海面高度数据，涵盖北极和南极地区，时间范围为 2010.5 至 2019.12。数据可用于研究海洋潮汐或海平面变化。数据已格式化，便于进行潮汐研究，并已用于推导 DTU23 海洋潮汐模型（亦提供）。Cryosat-2 数据的处理与重跟踪过程详见相关论文。数据处理过程中，已移除 DTU21MSS 和 FES2014 弹性海洋潮汐信号。处理工作基于完整 20 Hz 数据逐条轨迹进行，以允许提取海面高度在锋区。文件中的每一观测值代表一个 0.5 度纬度乘以 3.0 度纬度的单元格的平均值（ssh）和标准偏差。数据格式如下（以数据示例说明）：196 -57.126127 14.598178 805854109.666172 -0.046690 0.106288 -114 4 5 标签，纬度，经度，自 1985 年 1 月 1 日 00:00 以来时间秒数，平均海平面，海平面标准偏差，末尾的三个指数分别为：纬度框号（纬度）、经度框号和平均点数。纬度框号为 -114 对应于 -57.0 至 -57.5 之间的单元格，这是由于 0.5 度的平均化所致。该数据集包含合并的 Cryosat-2 数据集，即 LRM、SAR 和 SARin 数据。通过联系作者，还可以获得相同格式的独立 SAR/SIN/LRM 数据集。文件 c2data 展示了每个地理单元格中有效平均海平面观测值的数量。

搜集汇总

背景与挑战

背景概述

该数据集提供2010.5至2019.12期间Cryosat-2卫星观测的极地海面高度数据，专门用于潮汐研究和海平面变化分析，数据以0.5°×3.0°网格单元组织，包含经纬度、时间戳和统计量等信息。