Search
CSV
RISPrognostic Evaluation of Assumptions Used by Cumulus Parameterizations
Publisher: American Meteorological Society
Abstract: Using a spectral-type cumulus parameterization that includes moist downdrafts within a three-dimensional mesoscale model, various disparate closure assumptions are systematically tested within the generalized framework of ...
Semiprognostic Tests of Cumulus Parameterization Schemes in the Middle Latitudes
Publisher: American Meteorological Society
Abstract: In this paper, we consider three disparate classes of cumulus parameterization schemes, applied to cases of severe midlatitude convective storms observed during SESAME-1979. Objective analysis of the observed data was ...
The ERICA IOP 5 Storm. Part II: Sensitivity Tests and Further Diagnosis Based on Model Output
Publisher: American Meteorological Society
Abstract: This paper continues the study of the ERICA IOP 5 storm begun in a companion paper. The latter documented the storm development, utilizing both conventional and special observations, and presented the results of a successful ...
The ERICA IOP 5 Storm. Part I: Analysis and Simulation
Publisher: American Meteorological Society
Abstract: The ERICA IOP 5 storm was the third strongest cyclone observed during the three-month Experiment on Rapidly Intensifying Cyclones over the Atlantic (ERICA) and the least successfully predicted by the operational models. ...
Sensitivities of Subseasonal Unified Forecast System Simulations to Changes in Parameterizations of Convection, Cloud Microphysics, and Planetary Boundary Layer
Publisher: American Meteorological Society
Mesoscale Weather Prediction with the RUC Hybrid Isentropic–Terrain-Following Coordinate Model
Publisher: American Meteorological Society
Abstract: A mesoscale atmospheric forecast model configured in a hybrid isentropic?sigma vertical coordinate and used in the NOAA Rapid Update Cycle (RUC) for operational numerical guidance is presented. The RUC model is the only ...
Evaluation of MJO Predictive Skill in Multi-Physics and Multi-Model Global Ensembles
Publisher: American Meteorological Society
Abstract: onth-long hindcasts of the Madden-Julian Oscillation (MJO) from the atmospheric Flow-following Icosahedral Model coupled with an icosahedral-grid version of the Hybrid Coordinate Ocean Model (?FIM-iHYCOM?), and from the ...
Analyzing the Grell–Freitas Convection Scheme from Hydrostatic to Nonhydrostatic Scales within a Global Model
Publisher: American Meteorological Society
Abstract: he authors implemented the Grell?Freitas (GF) parameterization of convection in which the cloud-base mass flux varies quadratically as a function of the convective updraft fraction in the global nonhydrostatic Model for ...
Regional Climate Model Simulation of U.S.–Mexico Summer Precipitation Using the Optimal Ensemble of Two Cumulus Parameterizations
Publisher: American Meteorological Society
Abstract: The fifth-generation Pennsylvania State University?NCAR Mesoscale Model (MM5)-based regional climate model (CMM5) simulations of U.S.?Mexico summer precipitation are quite sensitive to the choice of Grell or Kain?Fritsch ...
Subseasonal Forecasting with an Icosahedral, Vertically Quasi-Lagrangian Coupled Model. Part I: Model Overview and Evaluation of Systematic Errors
Publisher: American Meteorological Society
Abstract: AbstractThe atmospheric hydrostatic Flow-Following Icosahedral Model (FIM), developed for medium-range weather prediction, provides a unique three-dimensional grid structure?a quasi-uniform icosahedral horizontal grid and ...