Furtado, K, Field, PR orcid.org/0000-0001-8528-0088, Luo, Y et al. (6 more authors) (2018) Cloud-microphysical factors affecting simulations of deep convection during the presummer rainy-season in southern China. Journal of Geophysical Research: Atmospheres, 123 (18). 10,477-10,505. ISSN 2169-897X
Abstract
The sensitivity of subtropical deep convection to the parameterization of cloud microphysics is elucidated through high‐resolution modeling of extreme presummer rainfall over southern China. An ensemble of physics configuration experiments is used to identify several drivers of model errors in comparison to radar observations from the South China Monsoon Rainfall Experiment (SCMREX) and remotely sensed estimates of cloud, precipitation, and radiation from satellites in the A‐train constellation. The benefits of increasing the number of prognostic variables in the microphysics scheme is assessed, relative to the effects of the parameterization of cloud microphysical properties and cloud fraction diagnosis. By matching individual parameterizations between the microphysical configurations, it is shown that a small subset of the parameterization changes can reproduce most of the dependence of model performance on physics configuration. In particular, biases that are due to the low‐level clouds and rain are strongly influenced by cloud fraction diagnosis and raindrop size distribution, whereas variations in the effects of high clouds are strongly influenced by differences in the parameterization of ice crystal sedimentation. Hence, for the case studied here, these parameterizations give more insight into the causes of variability in model performance than does the number of model prognostics per se.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | ©2018 American Geophysical Union. Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | clouds, microphysics, monsoons, China, modeling, observations |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Inst for Climate & Atmos Science (ICAS) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 15 Jan 2019 15:26 |
Last Modified: | 31 Jan 2019 15:28 |
Status: | Published |
Publisher: | American Geophysical Union |
Identification Number: | 10.1029/2017JD028192 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:141043 |