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Global simulations of ice nucleation and ice supersaturation with an improved cloud scheme in the Community Atmosphere Model
Abstract
A process‐based treatment of ice supersaturation and ice nucleation is implemented in the National Center for Atmospheric Research Community Atmosphere Model (CAM). The new scheme is designed to allow (1) supersaturation with respect to ice, (2) ice nucleation by aerosol particles, and (3) ice cloud cover consistent with ice microphysics. The scheme is implemented with a two‐moment microphysics code and is used to evaluate ice cloud nucleation mechanisms and supersaturation in CAM. The new model is able to reproduce field observations of ice mass and mixed phase cloud occurrence better than previous versions. The model is able to reproduce observed patterns and frequency of ice supersaturation. Simulations indicate homogeneous freezing of sulfate and heterogeneous freezing on dust are both important ice nucleation mechanisms, in different regions. Simulated cloud forcing and climate is sensitive to different formulations of the ice microphysics. Arctic surface radiative fluxes are sensitive to the parameterization of ice clouds. These results indicate that ice clouds are potentially an important part of understanding cloud forcing and potential cloud feedbacks, particularly in the Arctic.
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Cited by
Neale, R. B., Richter, J., Park, S., Lauritzen, P. H., Vavrus, S. J., Rasch, P. J., & Zhang, M. (2013) · Journal of Climate · doi:10.1175/jcli-d-12-00236.1 · Cited by 788
Self-citationLiu, X., Ma, P.-L., Wang, H., Tilmes, S., Singh, B., Easter, R. C., Ghan, S. J., & Rasch, P. J. (2016) · Geoscientific Model Development · doi:10.5194/gmd-9-505-2016 · Cited by 671
Self-citationMixed-Phase Clouds: Progress and Challenges
Korolev, A., McFarquhar, G., Field, P. R., Franklin, C., Lawson, P., Wang, Z., Williams, E., Abel, S. J., Axisa, D., Borrmann, S., et al. (2017) · Meteorological Monographs · doi:10.1175/amsmonographs-d-17-0001.1 · Cited by 455
Kravitz, B., Robock, A., Tilmes, S., Boucher, O., English, J. M., Irvine, P. J., Jones, A., Lawrence, M. G., MacCracken, M., Muri, H., et al. (2015) · Geoscientific Model Development · doi:10.5194/gmd-8-3379-2015 · Cited by 297
The climate impact of aviation aerosols
Gettelman, A., & Chen, C. (2013) · Geophysical Research Letters · doi:10.1002/grl.50520 · Cited by 132
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Metadata
- Authors
- Gettelman, A., Liu, X., Ghan, S. J., Morrison, H., Park, S., Conley, A. J., Klein, S. A., Boyle, J., Mitchell, D. L., & Li, J. ‐. F.
- Venue
- Journal of Geophysical Research: Atmospheres
- Publisher
- American Geophysical Union (AGU)
- Published
- 2010-09-27
- Volume
- 115
- Issue
- D18
- ISSN
- 0148-0227 (ISSN-L)
- OpenAlex
- W2007337155
- Cited by
- 448
- References
- 0
- FWCI
- 18.00
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Global simulations of ice nucleation and ice supersaturation with an improved cloud scheme in the Community Atmosphere Model. https://app.cochat.ai/papers/10.1029/2009jd013797
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- Gettelman, A., Liu, X., Ghan, S. J., Morrison, H., Park, S., Conley, A. J., Klein, S. A., Boyle, J., Mitchell, D. L., & Li, J. ‐. F. (2010). Global simulations of ice nucleation and ice supersaturation with an improved cloud scheme in the Community Atmosphere Model. Journal of Geophysical Research: Atmospheres. https://doi.org/10.1029/2009jd013797
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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