Satellite Observations of Precipitating Marine Stratocumulus Show Greater Cloud Fraction for Decoupled Clouds in Comparison to Coupled Clouds

This study examines the relationships between marine stratocumulus clouds (MSC) coupling state with the ocean surface, their precipitation rate and fractional cloud cover (CF). This was possible by developing a novel methodology for satellite retrieval of the clouds coupling state. Decks of overcast...

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Veröffentlicht in:Geophysical research letters. - 1984. - 45(2018), 10 vom: 28. Mai, Seite 5126-5134
1. Verfasser: Goren, Tom (VerfasserIn)
Weitere Verfasser: Rosenfeld, Daniel, Sourdeval, Odran, Quaas, Johannes
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2018
Zugriff auf das übergeordnete Werk:Geophysical research letters
Schlagworte:Journal Article boundary layer clouds cloud cover cloud radiative effect coupled decoupled marine Stratocumulus
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520 |a This study examines the relationships between marine stratocumulus clouds (MSC) coupling state with the ocean surface, their precipitation rate and fractional cloud cover (CF). This was possible by developing a novel methodology for satellite retrieval of the clouds coupling state. Decks of overcast MSC were reported in previous studies to break up often as their precipitation rate increases significantly, thus reducing CF and cloud radiative effect substantially. Here we show that decks of precipitating decoupled MSC have larger CF compared to similarly precipitating coupled MSC. The difference in CF between decoupled and coupled clouds was found to increase with precipitation rate, up to nearly doubling the CF of the heaviest precipitating decoupled MSC. This suggests that decoupling is a feature related to higher cloud radiative effect in precipitating MSC 
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700 1 |a Rosenfeld, Daniel  |e verfasserin  |4 aut 
700 1 |a Sourdeval, Odran  |e verfasserin  |4 aut 
700 1 |a Quaas, Johannes  |e verfasserin  |4 aut 
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