.. _TitCase20220422:

Case: 22 April 2022
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Summary
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Deepening stratocumulus cloud deck that erodes in advance of an approaching front  

Description
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Prefrontal closed stratocumulus event that featured periods of open cell conditions to bookend this day. Frequent subcloud drizzle was observed during the stratocumulus conditions, with the most enhanced drizzle times during the middle portions of this event. The low-level flow was modest (20 kts) and northerly, but weakened and shifted westerly as the synoptic wave approached. Additional upper-level clouds were visible on SIVIRI and were associated with the approaching synoptic wave, however these high clouds remained mostly south of the Azores. Inversion height at approximately 1.7 km AGL.               

Available assets
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Standard ARM profiling assets, SEVIRI. RLPROF-FEX. Additional ENA GNSS ground station radiosonde launch (03 UTC) 

Critical period: 03:00-12:00
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Precipitating stratocumulus cloud deck


.. figure:: images/enalasso_obs-aqua-pm-modis-vis_20220422.jpg
    :name: FigCase20220422
    :align: center
    :alt: True color MODIS AQUA 
    :figclass: align-center

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



.. raw:: latex

    \clearpage