Monthly average of sea level measurements from San Diego Harbor, the sea level average seasonal cycle, and the long term trend are presented, 1906 - 2024

Monthly average sea level measurements, and derived sea-level anomolies from San Diego Harbor's station (32°42.80N, 117°10.40W) is obtained from the University of Hawai’i Sea Level Center. The sea level average seasonal cycle and the long term trend are calculated (mm) from the monthly averages obtained from the GLOSS/CLIVAR (formerly known as the WOCE) "fast" sea level database - University of Hawaii Sea Level Center. The resulting anomalies of de-trended sea level are used as a mid-latitude index of El Niño.