Variable Quick Reference

Summary of all variables in the High Resolution Tidal Hindcast dataset. Click a variable name to view its full documentation including description, equation, and properties.

Variable	Internal Name	Units	Description
Mean Current Speed	vap_water_column_mean_sea_water_speed	m/s	Annual average of depth-averaged current speed
95th Percentile Current Speed	vap_water_column_95th_percentile_sea_water_speed	m/s	Estimated extreme current speed, outlier-tolerant and comparable across sites for reconnaissance-level assessment
Mean Power Density	vap_water_column_mean_sea_water_power_density	W/m²	Annual average of depth-averaged kinetic energy flux
95th Percentile Power Density	vap_water_column_95th_percentile_sea_water_power_density	W/m²	Estimated extreme power density, outlier-tolerant and robust to cubic-velocity sensitivity
Minimum Water Depth	vap_water_column_height_min	m	Minimum water depth calculated over the 1-year hindcast period
Maximum Water Depth	vap_water_column_height_max	m	Maximum water depth calculated over the 1-year hindcast period
Grid Resolution	vap_grid_resolution	m	Average edge length of triangular model grid cells
Tidal Range	vap_tidal_range	m	Difference between maximum and minimum sea surface elevation over the hindcast year
Distance to Shore	vap_distance_to_shore	NM	Geodesic distance from grid cell center to nearest shoreline
Maximum Sea Surface Elevation at High Tide	vap_sea_surface_elevation_high_tide_max	m (relative to model MSL)	Highest sea surface elevation calculated during high tide over the hindcast year
Minimum Sea Surface Elevation at Low Tide	vap_surface_elevation_low_tide_min	m (relative to model MSL)	Lowest sea surface elevation calculated during low tide over the hindcast year
Face ID	face_id		Location specific unique integer identifier for each triangular grid element
Center Latitude	lat_center	degrees_north	Latitude of the triangular element centroid (WGS84)
Center Longitude	lon_center	degrees_east	Longitude of the triangular element centroid (WGS84)
S3 URI for Full Year Time Series Data	full_year_data_s3_uri		direct link (S3 URI) to download the one-year hindcast time series (parquet) for this location. Includes speed, direction, for 10 uniform sigma levels at half-hourly (lower 48) or hourly (Alaska) intervals.
HTTPS URL for Full Year Time Series Data	full_year_data_https_url		direct link (HTTPS) to download the one-year hindcast time series (parquet) for this location. Includes speed, direction, for 10 uniform sigma levels at half-hourly (lower 48) or hourly (Alaska) intervals

---