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EPCAPE-DAL

EPCAPE - Dalhousie

3 January 2023 - 31 January 2024

Lead Scientist: Rachel Chang

Observatory: AMF

The Eastern Pacific Cloud Aerosol Precipitation Experiment (EPCAPE) will characterize the extent, radiative properties, aerosol interactions, and precipitation of stratocumulus clouds in the Eastern Pacific across all four seasons at two sites in La Jolla, California. The Dalhousie University contribution (EPCAPE – Dalhousie) will measure the cloud (fog) droplet number size spectra at the Mt. Soledad site using a fog monitor (FM120, Droplet Measurement Technologies) and support the broader EPCAPE goals of investigating the differences in cloud properties during regional polluted and clean marine conditions. These measurements will contribute to the following questions from the EPCAPE science plan:

1) Cloud and Aerosol Climatology: What are the seasonal and diurnal cycles of marine stratocumulus cloud and aerosol properties on the northeastern Pacific coast?

3) Aerosol-Cloud Interactions: Will retrieved cloud properties reflect the regional signatures of aerosol?

These measurements will also provide an important baseline comparison for the aerosol measurements behind the ground-based counterflow virtual impactor, allowing us to directly relate aerosol properties to cloud droplet properties.

Timeline

Campaign Data Sets

IOP Participant Data Source Name Final Data
Fog Monitoring Device Order Data
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Atmospheric Radiation Measurement (ARM) | Reviewed March 2025