EOL Seminar: The Influence of Precipitation During Stratocumulus to Cumulus Transition Over the North Pacific Ocean

Date: 
Tuesday, March 16, 2021 - 15:30 to 16:30
Location: 
Virtual (Webcast link provided below)
Contact Name: 
Melissa Ward
Contact Email: 
Contact Phone: 
303-497-8713

SPEAKER: Dr. Mampi Sarkar - NCAR Advanced Study Program (ASP) Postdoctoral Fellow

DATE: March 16, 2021

Time: 3:30 - 4:30 pm MST

WEBCAST: https://operations.ucar.edu/live-eol

QUESTIONS: Slido will be used to answer your questions during the seminar.

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ABSTRACT

Precipitation, a conspicuous feature of the stratocumulus-to-cumulus transition in the northeast Pacific Ocean, is analyzed during Cloud System Evolution in the Trades (CSET) campaign using a 94 GHz Doppler radar, 532 nm lidar and in-situ instruments. An increasing precipitation along the Lagrangian parcel trajectories is co-associated with deepening boundary layer and faster cloud transition. Results from a simple one-dimensional evaporation model and from radar/lidar retrievals suggest that sub-cloud evaporation likely increases throughout the transition. This, coupled with larger drop sizes capable of lowering the latent cooling profile, facilitates the transition to more surface-driven convection, providing opportunities for modeling studies.