The response of low clouds to global warming is one of the largest uncertainties in projections of climate change. Low clouds strongly affect the amount of shortwave radiation reflected back to space from Earth, but do not affect outgoing longwave radiation substantially (e.g., Hartmann & Short, 1980). How clouds alter reflected shortwave radiation in response to warming is termed the shortwave cloud feedback. It is uncertain how low clouds will respond to changes in the atmosphere in a warming world and contribute to this feedback (e.g., Ceppi et al., 2017;Zelinka et al., 2012aZelinka et al., , 2012bZelinka et al., , 2016Zelinka et al., , 2020. This uncertainty drives spread in the climate sensitivity predicted by global climate models (GCMs) (e.g., Caldwell et al., 2016). Thus, improving our understanding of how low clouds will change in a warming world is critical to predicting 21st century warming (e.g., Bony et al., 2015;Sherwood et al., 2020).At zeroth order, the mean optical thickness and extent of low cloud strongly affect global albedo (Engstrom et al., 2015b). However, low clouds encompass different morphology patterns with regionally varied mesoscale features (e.g., large-scale structures O ∼ 100 km of clouds with typical cell sizes O ∼ 20-80 km, Wood & Hartmann, 2006;Zhou et al., 2021;Stevens et al., 2019). For example, open and closed mesoscale cellular convective (MCC) organization that dominate subtropical stratocumulus (Sc) cloud decks and marine cold-air