ECCC Global Coastal Total Sea Level Hindcast, Version 2 (ECCC_GTSLv2)

Updates in this version include (1) the addition of metadata to the NetCDF files and (2) corrections to several locations or grid points with near-zero sea levels. ECCC-GTSLv2 was developed based on ECCC's Global Deterministic storm Surge Prediction System (GDSPS). The most recent upgrade, implemented in Version 2, includes substantial improvements resulting from the enhanced tropical cyclone representation in ERA5 using parametric methods. See details in this publication (Wang et al., 2026) https://doi.org/10.1029/2026GL124965 The dataset dynamically accounts for contributions from storm surges, tides, baroclinicity, and their nonlinear interactions. Special efforts have been made to include or improve these components through nudging of deep water tidal transports, nudging of 3D temperature and salinity, and by calibrating the wind drag coefficient. The dataset includes the following files: gesla4_3k.tar.gz: hourly total sea level hindcast in yearly files at GESLA4 tide gauge locations (~3k nodes, minimum spacing of 5 km) gshhs_35k_YYYY-YYYY.tar.gz: houly total sea level hindcast in yearly files on the SurgeMIP shoreline grid (~35k nodes, 20 km spacing).