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EPIC at the University of Washington

Eastern Pacific Investigation of Climate Processes in the Coupled Ocean-Atmosphere System

The overall goal of EPIC was to measure and observe the tropical eastern Pacific Ocean and atmosphere in order to better represent the key environmental processes in computer models used for El Niño and climate prediction. A group from the Atmospheric Sciences Department at the University of Washington (UW) participated in part of the EPIC project in the stratocumulus region (20ºS, 85ºW, off the coast of Peru).

The goals of this group were to:
  • Document cloud and boundary layer structure
  • Assess the importance of drizzle processes to cloud thickness and extent
  • Compare results with other stratocumulus regimes and with large-scale models


  • To accomplish these goals, the UW team employed several types of observations, including radar, upper air soundings (weather balloons), World Meteorological Organization (WMO) weather observations, cloud photography, and drizzle drop collection. All data sets except the drop collection can be found on this web site.

    All data were taken aboard the NOAA ship, the Ronald H Brown. For more information about this ship, including the C-band radar used by the UW group, refer to http://www.moc.noaa.gov/rb/index.html.

    Please go to our Links page to find other EPIC data sets.