Deviations of sea surface height from mean sea level as derived from satellite altimetry. Ocean surface topography can vary as great as two meters and is influenced by ocean circulation, ocean temperature, salinity, wind, and other factors. AVISO sea height anomaly (SHA) data are available here on a near real-time basis with a 2-day average delay. These data are provided by the NOAA CoastWatch Caribbean and Gulf of Mexico (CWCGOM) and NOAA Atlantic OceanWatch Regional Nodes. The maps shown here are generated by interpolating SHA data corresponding to a 10-day period ending on the selected date. More information here.
dates available: 2006 - present (with data gaps)
spatial resolution: 0.2° (~20 km)