Articles | Volume 20, issue 17
Research article
14 Sep 2020
Research article |  | 14 Sep 2020

The incorporation of the Tripleclouds concept into the δ-Eddington two-stream radiation scheme: solver characterization and its application to shallow cumulus clouds

Nina Črnivec and Bernhard Mayer

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Quantifying the bias of radiative heating rates in numerical weather prediction models for shallow cumulus clouds
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Subject: Radiation | Research Activity: Atmospheric Modelling and Data Analysis | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
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Cited articles

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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,<2304:APFCGA>2.0.CO;2, 1996. a
Barker, H. W., Pincus, R., and Morcrette, J.-J.: The Monte Carlo Independent Column Approximation: Application within large-scale models. Extended Abstracts, GCSS-ARM Workshop on the representation of cloud systems in large-scale models, GEWEX, Kananaskis, AB, Canada, 1–10, 2002. a
Short summary
Unresolved interaction between clouds and atmospheric radiation is a source of uncertainty in weather and climate models. The present study highlights the potential of the state-of-the-art Tripleclouds radiative solver for shallow cumulus clouds, exposing the significance of properly representing subgrid cloud horizontal heterogeneity. The Tripleclouds concept was thereby incorporated in the widely employed δ-Eddington two-stream radiation scheme within the comprehensive libRadtran library.
Final-revised paper