Articles | Volume 18, issue 23
https://doi.org/10.5194/acp-18-17405-2018
https://doi.org/10.5194/acp-18-17405-2018
Research article
 | 
07 Dec 2018
Research article |  | 07 Dec 2018

Evaluation of autoconversion and accretion enhancement factors in general circulation model warm-rain parameterizations using ground-based measurements over the Azores

Peng Wu, Baike Xi, Xiquan Dong, and Zhibo Zhang

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Cited articles

Ahlgrimm, M. and Forbes, R.: Improving the Representation of Low Clouds and Drizzle in the ECMWF Model Based on ARM Observations from the Azores, J. Climate, 142, 668–685, https://doi.org/10.1175/MWR-D-13-00153.1, 2014. 
Albrecht, B., Fairall, C., Thomson, D., White, A., Snider, J., and Schubert, W.: Surface-based remote-sensing of the observed and the adiabatic liquid water-content of stratocumulus clouds, Geophys. Res. Lett., 17, 89–92, https://doi.org/10.1029/Gl017i001p00089, 1990. 
Austin, P., Wang, Y., Kujala, V., and Pincus, R.: Precipitation in Stratocumulus Clouds: Observational and Modeling Results, J. Atmos. Sci., 52, 2329–2352, https://doi.org/10.1175/1520-0469(1995)052<2329:PISCOA>2.0.CO;2, 1995. 
Bai, H., Gong, C., Wang, M., Zhang, Z., and L'Ecuyer, T.: Estimating precipitation susceptibility in warm marine clouds using multi-sensor aerosol and cloud products from A-Train satellites, Atmos. Chem. Phys., 18, 1763–1783, https://doi.org/10.5194/acp-18-1763-2018, 2018. 
Barker, H. W., Wiellicki, B. A., and Parker, L.: A parameterization for computing grid-averaged solar fluxes for inhomogeneous marine boundary layer clouds. Part II: Validation using satellite data, J. Atmos. Sci., 53, 2304–2316, 1996. 
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Short summary
Prescribed autoconversion and accretion enhancement factors in GCM warm-rain parameterizations contribute partially to the too-frequent and too-light problem in precipitation simulation. The two factors should be regime- and resolution-dependent. A decreased autoconversion enhancement factor and increased accretion enhancement factor in the Morrison and Gettleman (2008) scheme can improve the simulated precipitation frequency and intensity. The two factors for other schemes are also suggested.
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