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Peter N. Blossey, Christopher S. Bretherton, and Johannes Mohrmann

with precipitation ( Sandu and Stevens 2011 ; Eastman and Wood 2016 ; Yamaguchi et al. 2017 ). While many simulation studies are based on idealized or composite scenarios with gradual changes in SST and steady large-scale forcings, a case study based on the ASTEX field campaign ( Bretherton and Pincus 1995 ; Bretherton et al. 1999 ; Van der Dussen et al. 2013 ) provided an example of a particular strongly forced transition. McGibbon and Bretherton (2017) also simulated well-observed cloud

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Johannes Mohrmann, Christopher S. Bretherton, Isabel L. McCoy, Jeremy McGibbon, Robert Wood, Virendra Ghate, Bruce Albrecht, Mampi Sarkar, Paquita Zuidema, and Rabindra Palikonda

remains cloudier. The two cases differ in initial MBL depth, decoupling, microphysics, and large-scale forcings. Note that the agreement between outbound flight number and case number (L06 coming from RF06, L10 from RF10) is coincidental. b. Satellite and reanalysis data In addition to the GV measurements, satellite and reanalysis data are used. Where possible, these are compared to aircraft observations for additional validation. The satellite data consists of cloud property fields generated from

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Christopher S. Bretherton, Isabel L. McCoy, Johannes Mohrmann, Robert Wood, Virendra Ghate, Andrew Gettelman, Charles G. Bardeen, Bruce A. Albrecht, and Paquita Zuidema

bins, was positively correlated with estimated inversion strength (EIS) with a regression slope close to past climatology. After controlling for EIS, the low cloud cover was not well correlated with cloud droplet concentration, which suggests that the Sc–Cu transition is not strongly controlled by aerosol processes. This contrasts with some recent idealized large-eddy simulation studies (e.g., Yamaguchi et al. 2017 ), but is consistent with another such study using data-constrained forcings and

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Jenny V. Turton, Thomas Mölg, and Dirk Van As

on the location, altitude, and observational period for the four AWS datasets used. T , air temperature; RH, relative humidity; WS, wind speed; WD, wind direction; P , air pressure; SW, shortwave radiation; LW, longwave radiation; CC, cloud cover; and TSK, skin temperature. A plus sign indicates that wind direction data were recorded by the logger, but the reference direction was not recorded. Therefore, wind direction data cannot be used with accuracy. An asterisk indicates that there is a gap

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