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EPCAPE Concludes: Unprecedented Data on Coastal Marine Clouds

EPCAPE's detailed data will transform our understanding of coastal marine clouds. The project exceeded expectations, recording more clouds and data than anticipated.

The picture is taken on the shore. In the foreground there is a water body. In the center of the...
The picture is taken on the shore. In the foreground there is a water body. In the center of the picture there are ships, boat and other objects. In the background there are buildings, stones and dock. Sky is cloudy.

EPCAPE Concludes: Unprecedented Data on Coastal Marine Clouds

The Eastern Pacific Cloud Aerosol Precipitation Experiment (EPCAPE) has successfully concluded its yearlong observational phase in mid-February 2024. The project, designed to study coastal marine clouds and human-made particles' impact, has yielded a wealth of data now freely available.

EPCAPE, led by Lynn Russell, a distinguished professor at UC San Diego's Scripps Institution of Oceanography, exceeded expectations. It recorded more clouds and data than anticipated, involving 17 co-investigators from various institutions. The project deployed ARM's portable observatory AMF1 along Scripps Pier, with additional instruments on Mount Soledad. EPCAPE's detailed probing of California coastal marine stratus clouds is unprecedented, providing valuable insights into their sensitivity to environmental changes and their influence on solar radiation and precipitation patterns.

The Department of Energy's Atmospheric Radiation Measurement (ARM) user facility provided the main instrumentation, supplemented by partners. Most of the year's direct measurements are now freely available in the ARM Data Center and UC San Diego's digital library collections.

EPCAPE's successful completion marks a significant advancement in our understanding of coastal marine clouds and their interaction with human-made particles. The extensive data collected will be crucial for improving climate models and predicting future climate changes.

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