ERSSTv5扩展重建海表温度资料(2.0°)(月平均)(185401-201912)(netcdf)

ERSSTv5扩展重建海表温度资料(2.0°)(月平均)(185401至今)(netcdf)是ERSST的最新版本为5，它使用了ICOADS 3.0版（海表温度）SST中的新数据集； SST来自Argo漂浮在5米以上，Hadley Center Ice-SST版本2（HadISST2）的冰浓度。 ERSSTv5通过（a）减少训练正交函数（EOT）的重建功能时的空间滤波，（b）消除了EOT中的高纬度阻尼，以及（c）在北极增加了10个EOT，从而改善了SST的时空变异性。 ERSSTv5通过从使用夜间海洋气温（NMAT）作为参考来转换为浮标SST（作为纠正船舶SST偏差的参考）来改善了绝对SST。

The Extended Reconstructed Sea Surface Temperature version 5 (ERSSTv5) dataset, with a spatial resolution of 2.0°, monthly mean values, spanning from January 1854 to the present, and provided in NetCDF format, is the 5th and latest iteration of the ERSST series. It integrates new datasets including SST data from ICOADS Release 3.0, SST observations from Argo floats deployed at depths shallower than 5 meters, and sea ice concentration data from the Hadley Center's Ice-SST Version 2 (HadISST2). To improve the portrayal of spatiotemporal variability of SST, ERSSTv5 implements three key optimizations: (a) reducing spatial filtering during the reconstruction of Empirical Orthogonal Teleconnections (EOT) for model training; (b) removing high-latitude damping components in EOT; and (c) adding 10 additional EOT modes over the Arctic Ocean. Additionally, ERSSTv5 enhances the absolute accuracy of SST by calibrating ship-based SST measurements using buoy SST as the reference standard, where buoy SST itself is calibrated against Nighttime Marine Air Temperature (NMAT) data.

搜集汇总

背景与挑战

背景概述

该数据集是ERSSTv5扩展重建海表温度资料，提供全球范围2.0度空间分辨率的月平均海表温度数据，时间覆盖从1854年1月至2019年12月。它基于ICOADS 3.0、Argo浮标和HadISST2等多源数据，通过优化重建方法改善了时空变异性和绝对温度准确性，适用于海洋气象学和气候变化研究。