Case: 21 November 2016

Summary

Open cellular cloud organization under relatively light northerly winds

Description

This was an open cell cumulus event with widespread coverage across the domain. The clouds form under light northerly low-level flow present throughout this event. The melting level was near or above the observed cloud echo top heights for the entirety of the event. Several precipitating cells overpassed the ENA main site, with the most intense intervals of precipitation occurring around midday. The SEVIRI observations suggested upper level clouds south of the primary Azores region, associated with the synoptic wave passage in the early hours of the event.

Available assets

Standard ARM profiling assets, SEVIRI. Additional NPOESS validation radiosonde (04:00 UTC on 21 November 2016).

Critical period: 09:00-12:00

Precipitating cell overpasses at the ENA main site

True color MODIS AQUA — Figure 26 True color afternoon MODIS AQUA image with overlaid LES domains. The image domain corresponds to the size of the model forcing domain.