Earth  ID: 31232

Sea Surface Height Anomaly, 2022-2023

El Niño is characterized by unusually warm ocean temperatures in the eastern equatorial Pacific. The warmer water associated with El Niño displaces colder water in the upper layer of the ocean causing an increase in sea surface height because of thermal expansion.

This visualization, created using a sea surface height anomaly product available from the Copernicus Marine Service shows sea surface height anomalies (SSHA) from January 1, 2022 through 2023. The maps have been processed to highlight the interannual signal of SSH, i.e., the mean signal, seasonal signal, and the trend have been removed. Red and orange shades indicate high sea surface heights relative to the reference state, while blue and green shades indicate sea surface heights lower than the reference state. Neutral conditions appear yellow.

A statement issued by the NOAA Climate Prediction Center on September 14, 2023, states that "El Niño is anticipated to continue through the Northern Hemisphere winter (with greater than 95% chance through January - March 2024)."

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Marit Jentoft-Nilsen: Lead Visualizer
Please give credit for this item to:
NASA's Goddard Space Flight Center, Generated using E.U. Copernicus Marine Service Information.

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SVS >> El Nino
GCMD >> Earth Science >> Climate Indicators >> Teleconnections >> El Nino Southern Oscillation
GCMD >> Earth Science >> Oceans >> Sea Surface Topography >> Sea Surface Height
SVS >> Hyperwall
NASA Science >> Earth
SVS >> Sea Surface Height Anomaly

GCMD keywords can be found on the Internet with the following citation: Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version