Altimetry Sea Surface Height and derived variables global

Overview

E.U. Copernicus Marine Service  multimission gridded sea surface heights above ellipsoid and geoid and associated geostrophic velocities. The sea surface heights above ellipsoid are computed with respect to a twenty-year mean. The processing takes into account input data at level 2 of all missions available which are homogenized with respect to a reference mission (currently Jason-3). The multi-mission cross-calibration process removes any residual orbit error, or long wavelength error (LWE), as well as large scale biases and discrepancies between various data flows. The missions are finally merged with an optimal interpolation to take into account all the altimetric missions measurements between [D-6 weeks, D+3 days] at the date D of the grids.

Use : Multi-mission gridded products are devoted to scientific applications: study of ocean variability (mesoscale circulation, seasonal variation, El Niño…), general circulation (ocean gyres, …), including operational oceanography (near-real time products).

Variables
sea_surface_height_above_sea_level,
sea_surface_height_above_geoid,
surface_northward_geostrophic_sea_water_velocity
surface_eastward_geostrophic_sea_water_velocity,
surface_northward_geostrophic_sea_water_velocity_
assuming_sea_level_for_geoid
surface_eastward_geostrophic_sea_water_
velocity_assuming_sea_level_for_geoid

Temporal coverage
19/04/2017 / today

Geographical coverage
Latitude = -90.0/90.0; Longitude = -125/125

Vertical coverage
0

Spatial resolution
1/4 degree

Update frequency
Daily

Producer
E.U. Copernicus Marine Service

Data access
NRT