Journal ArticleDOI
Development of an Effective Double-Moment Cloud Microphysics Scheme with Prognostic Cloud Condensation Nuclei (CCN) for Weather and Climate Models
Kyo-Sun Sunny Lim,Song-You Hong +1 more
TLDR
In this article, a new double-moment bulk cloud microphysics scheme based on the Weather Research and Forecasting (WRF) Double-Moment 6-class (WDM6) Microphysics was developed.Abstract:
A new double-moment bulk cloud microphysics scheme, the Weather Research and Forecasting (WRF) Double-Moment 6-class (WDM6) Microphysics scheme, which is based on the WRF Single-Moment 6-class (WSM6) Microphysics scheme, has been developed. In addition to the prediction for the mixing ratios of six water species (water vapor, cloud droplets, cloud ice, snow, rain, and graupel) in the WSM6 scheme, the number concentrations for cloud and rainwater are also predicted in the WDM6 scheme, together with a prognostic variable of cloud condensation nuclei (CCN) number concentration. The new scheme was evaluated on an idealized 2D thunderstorm test bed. Compared to the simulations from the WSM6 scheme, there are greater differences in the droplet concentration between the convective core and stratiform region in WDM6. The reduction of light precipitation and the increase of moderate precipitation accompanying a marked radar bright band near the freezing level from the WDM6 simulation tend to alleviate existing systematic biases in the case of the WSM6 scheme. The strength of this new microphysics scheme is its ability toallowflexibilityinvariableraindropsizedistributionbypredictingthenumberconcentrationsofcloudsand rain, coupled with the explicit CCN distribution, at a reasonable computational cost.read more
Citations
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Numerical study of convection observed during the Winter Monsoon Experiment using a mesoscale two-dimensional model [presentation]
TL;DR: In this article, a two-dimensional version of the Pennsylvania State University mesoscale model has been applied to Winter Monsoon Experiment data in order to simulate the diurnally occurring convection observed over the South China Sea.
A Description of the Advanced Research WRF Model Version 4
Journal ArticleDOI
Parameterization of Cloud Microphysics Based on the Prediction of Bulk Ice Particle Properties. Part I: Scheme Description and Idealized Tests
Hugh Morrison,Jason A. Milbrandt +1 more
TL;DR: In this article, a method for the parameterization of ice-phase microphysics is proposed and used to develop a new bulk micro-physics scheme, where all ice particles are represented by several physical properties.
Journal ArticleDOI
The Non-hydrostatic Icosahedral Atmospheric Model: description and development
Masaki Satoh,Masaki Satoh,Hirofumi Tomita,Hisashi Yashiro,Hiroaki Miura,Hiroaki Miura,Chihiro Kodama,Tatsuya Seiki,Akira Noda,Yohei Yamada,Yohei Yamada,Daisuke Goto,Masahiro Sawada,Takemasa Miyoshi,Yosuke Niwa,Masayuki Hara,Tomoki Ohno,Shin-ichi Iga,Takashi Arakawa,Takahiro Inoue,Hiroyasu Kubokawa +20 more
TL;DR: In this article, the development of a global non-hydrostatic model, focusing on the pioneering research of the Non-Hydrostatic Icosahedral Atmospheric Model (NICAM), is discussed.
Journal ArticleDOI
Representation of microphysical processes in cloud-resolving models: Spectral (bin) microphysics versus bulk parameterization
Alexander Khain,K. D. Beheng,Andrew J. Heymsfield,Alexei Korolev,S. O. Krichak,Zev Levin,Zev Levin,Mark Pinsky,Vaughan T. J. Phillips,Thara Prabhakaran,A. Teller,S. C. van den Heever,Jun-Ichi Yano +12 more
TL;DR: In this paper, a detailed survey of the physical basis and the applications of both bulk microphysics parameterization and spectral (bin) micro-physics (SBM) is presented.
References
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A Description of the Advanced Research WRF Version 3
C. Skamarock,B. Klemp,Jimy Dudhia,O. Gill,Dale Barker,G. Duda,Xiang-Yu Huang,Wei Wang,G. Powers +8 more
TL;DR: The Technical Note series provides an outlet for a variety of NCAR manuscripts that contribute in specialized ways to the body of scientific knowledge but which are not suitable for journal, monograph, or book publication.
Journal ArticleDOI
Numerical Study of Convection Observed during the Winter Monsoon Experiment Using a Mesoscale Two-Dimensional Model
TL;DR: In this article, a two-dimensional version of the Pennsylvania State University mesoscale model has been applied to Winter Monsoon Experiment data in order to simulate the diurnally occurring convection observed over the South China Sea.
Numerical study of convection observed during the Winter Monsoon Experiment using a mesoscale two-dimensional model [presentation]
TL;DR: In this article, a two-dimensional version of the Pennsylvania State University mesoscale model has been applied to Winter Monsoon Experiment data in order to simulate the diurnally occurring convection observed over the South China Sea.
Journal ArticleDOI
Aerosols, climate, and the hydrological cycle
TL;DR: Human activities are releasing tiny particles (aerosols) into the atmosphere that enhance scattering and absorption of solar radiation, which can lead to a weaker hydrological cycle, which connects directly to availability and quality of fresh water, a major environmental issue of the 21st century.
Journal ArticleDOI
Bulk Parameterization of the Snow Field in a Cloud Model
TL;DR: In this paper, a two-dimensional, time-dependent cloud model was used to simulate a moderate intensity thunderstorm for the High Plains region, where six forms of water substance (water vapor, cloud water, cloud ice, rain, snow and hail) were simulated.