|
Stacks Logo
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.
 
 
Help
Clear All Simple Search
Advanced Search
On the Importance of a Consistent Treatment of Prognostic Moisture Variables between Convective and Microphysical Parameterizations
  • Published Date:
    2018
  • Source:
    Monthly Weather Review, 146(5), 1527-1548.
Filetype[PDF-4.55 MB]


Details:
  • Personal Author:
  • Description:
    Analysis of WRF Model output from experiments using two double-moment microphysics schemes is carried out to demonstrate that there can be an inconsistency between the predicted mass and number concentrations when a single-moment convective parameterization is used together with a double-moment microphysics scheme. This inconsistency may arise because the grid-scale and subgrid-scale cloud schemes generally apply different levels of complexity to the parameterized microphysical processes. In particular, when a multimoment formulation is used in the microphysics scheme and other physical parameterizations modify only the mass-related moment while the values of the second (or higher) moment for individual hydrometeors remain unchanged, an unintended modification of the particle size distribution occurs. Simulated radar reflectivity is shown to be a valuable tool in diagnosing this inconsistency. In addition, potential ways to minimize the problem are explored by including number concentration calculations in the cumulus parameterization that are consistent with the assumptions of hydrometeor sizes in the microphysics parameterization. The results of this study indicate that it is physically preferable to unify microphysical assumptions between the grid-resolved and subgrid cloud parameterization schemes in weather and climate simulation models.

  • DOI:
    http://dx.doi.org/10.1175/mwr-d-17-0305.1
  • Document Type:
    Journal Article
  • Funding:
    NA15OAR4590160
  • Collection(s):
    Office of Oceanic and Atmospheric Research (OAR)
  • Main Document Checksum:
  • Supporting Files:
    No Additional Files
No Related Documents.
You May Also Like:
  1. Implementation of prognostic cloud scheme for a regional spectral model
    Personal Author:
    Hong, Song-You; Juang, Hann-Ming Henry; Zhao, Qingyun;
    Corporate Authors:
    National Centers for Environmental Prediction (U.S.)
    Published Date:
    1997
    Series:
    Office note (National Centers for Environmental Prediction (U.S.)) ; 417
    Description:
    The purpose of this study is to develop a precipitation physics package for the NCEP RSM designed to improve the skill of precipitation forecasts. The package incorporates a prognostic grid-resolvable precipitation scheme and a subgrid scale precipit...
    File Type:
    Filetype[PDF - 4.43 MB]
  2. The Brazilian Global Atmospheric Model (BAM): Performance for Tropical Rainfall Forecasting and Sensitivity to Convective Scheme and Horizontal Resolution
    Personal Author:
    Figueroa, S. N.; Bonatti, J. P.; Kubota, P. Y.; Grell, G. A.; Morrison, H.; Barros, S. R. M.; Fernandez, J. P. R.; Ramirez, E.; Siqueira, L.; Luzia, G.; Silva, J.; Silva, J. R.; Pendharkar, J.; Capistrano, V. B.; Alvim, D. S.; Enore, D. P.; Diniz, F. L. R.; Satyamurti, P.; Cavalcanti, I. F. A.; Nobre, P.; Barbosa, H. M. J.; Mendes, C. L.; Panetta, J.;
    Published Date:
    2016
    Source:
    Weather and Forecasting, 31(5), 1547-1572.
    Description:
    This article describes the main features of the Brazilian Global Atmospheric Model (BAM), analyses of its performance for tropical rainfall forecasting, and its sensitivity to convective scheme and horizontal resolution. BAMis the new global atmosphe...
    File Type:
    Filetype[PDF - 4.55 MB]
  3. Convective trigger function for a mass-flux cumulus parameterization scheme
    Personal Author:
    Hong, Song-You; Pan, Hua-Lu;
    Corporate Authors:
    National Centers for Environmental Prediction (U.S.)
    Published Date:
    1997
    Series:
    Office note (National Centers for Environmental Prediction (U.S.)) ; 418
    Description:
    A precipitation physics package for the NCEP Regional Spectral Model designed to improve the skill of precipitation forecasts is proposed. The package incorporates a prognostic grid-resolvable precipitation scheme and a parameterized convection schem...
    File Type:
    Filetype[PDF - 3.94 MB]
  4. A western region guide to the ETA-29 model
    Personal Author:
    Staudenmaier, Mike
    Corporate Authors:
    United States, National Weather Service., Western Region.
    Published Date:
    1997
    Series:
    NOAA technical memorandum NWS WR ; 246
    Description:
    "The National Center for Environmental Prediction (NCEP), formally known as NMC, has been developing and running numerical weather prediction models operationally since 1955. The first operational model was an equivalent barotropic model and from thi...
    File Type:
    Filetype[PDF - 2.52 MB]
  5. Development of neural network convection parameterizations for climate and NWP models using Cloud Resolving Model simulations
    Personal Author:
    Krasnopolʹsky, V. M.; Fox-Rabinovitz, Michael; Belochitski, Alexei Anatolevich, 1976-; Rasch, Philip J.; Blossey, Peter; Kogan, Yefim;
    Corporate Authors:
    National Centers for Environmental Prediction (U.S.)
    Published Date:
    2011
    Series:
    Office note (National Centers for Environmental Prediction (U.S.)) ; 469
    Description:
    A novel approach based on the neural network (NN) technique is formulated and used for development of a NN ensemble stochastic convection parameterization for climate models. This fast parameterization is built based on data from Cloud Resolving Mode...
    File Type:
    Filetype[PDF - 1.70 MB]