What is MOCI?  

MOCI synthesizes a number of local and regional ocean and atmospheric conditions that represent, in a holistic manner, the state of the California coastal ocean.  MOCI includes data that are readily available from the Internet so the indicator can be updated and shared regularly via this website.

MOCI captures ENSO events across decades, as well as the intensity and phasing of the most recent North Pacific marine heat wave, dubbed 'The Blob'.  It also shows differences in the magnitude and timing of ocean climate variability in different regions off California.  MOCI has skill relative to marine ecosystem dynamics from zooplankton to top predators, and therefore may be important to ecosystem-based fisheries and wildlife management. 

Most recent MOCI: January 1991 to December 2018. MOCI values were mostly within one standard deviation in 2018, but central and southern California coast have experienced a warmer fall (October to December). Southern California has experienced the longest period (5 years) with only positive MOCI values, from 2014 through 2018.

  • Northern California MOCI: 38-42°N. Data available in two formats: [txt][csv]

  • Central California MOCI: 34.5-38°N. Data: [txt][csv]

  • Southern California MOCI: 32-34.5°N. Data [txt][csv]

What data are included in MOCI?


MOCI include seasonal averages of the following data: 

  • Upwelling Index, NOAA [link]

  • Sea level from shore stations, NOAA [link]

  • Alongshore wind, sea surface temperature, air temperature, sea level pressure from NOAA buoys [link]

  • Regional climate indices:

    • MEI: Multivariate ENSO Index [link] (in this update, MEI is not available for December)

    • PDO: Pacific Decadal Oscillation [link]

    • NOI: Northern Oscillation Index [link]

    • NPGO: North Pacific Gyre Oscillation [link]





More information about MOCI:

García-Reyes M, Sydeman WJ. (2017). California Multivariate Ocean Climate Indicator (MOCI) and marine ecosystem dynamics. Ecological Indicators, 72, 521-529. [pdf]

Sydeman W, Thompson SA, García-Reyes M, Kahru M, Peterson W, Largier J. (2014). Multivariate ocean-climate indicators (MOCI) for the Central California Current: Environmental change: 2010-2014. Progress in Oceanography, 120, 352-369. [pdf]