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RISIdealized Large-Eddy Simulations of a Tropical Cyclone–like Boundary Layer
Publisher: American Meteorological Society
Abstract: he tropical cyclone (TC) boundary layer (TCBL)?featuring extreme winds over a rough ocean?is difficult to study observationally. With increasing computational power, high-resolution large-eddy simulation (LES) has become ...
Sensitivity of Tropical Cyclone Simulations to Parametric Uncertainties in Air–Sea Fluxes and Implications for Parameter Estimation
Publisher: American Meteorological Society
Abstract: ropical cyclones (TCs) are strongly influenced by fluxes of momentum and moist enthalpy across the air?sea interface. These fluxes cannot be resolved explicitly by current-generation numerical weather prediction models, ...
Impacts of Air–Sea Flux Parameterizations on the Intensity and Structure of Tropical Cyclones
Publisher: American Meteorological Society
Abstract: luxes of momentum and moist enthalpy across the air?sea interface are believed to be one of the most important factors in determining tropical cyclone intensity. Because these surface fluxes cannot be directly resolved by ...
Multiscale Processes Leading to Supercells in the Landfalling Outer Rainbands of Hurricane Katrina (2005)
Publisher: American Meteorological Society
Abstract: hallow supercells are frequently observed within the outer rainbands?both onshore and offshore?of landfalling tropical cyclones (TCs). Such supercells can produce tornadoes along the coast even when the center of the parent ...
Impacts of Ocean Cooling and Reduced Wind Drag on Hurricane Katrina (2005) Based on Numerical Simulations
Publisher: American Meteorological Society
Abstract: AbstractTropical cyclone (TC) intensity is strongly influenced by surface fluxes of momentum and moist enthalpy (typically parameterized in terms of ?exchange coefficients? Cd and Ck, respectively). The behavior of Cd and ...
Subseasonal Forecasting with an Icosahedral, Vertically Quasi-Lagrangian Coupled Model. Part II: Probabilistic and Deterministic Forecast Skill
Publisher: American Meteorological Society
Abstract: AbstractSubseasonal forecast skill of the global hydrostatic atmospheric Flow-Following Icosahedral Model (FIM) coupled to an icosahedral-grid version of the Hybrid Coordinate Ocean Model (iHYCOM) is evaluated through ...
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 ...
Probabilistic Evaluation of the Dynamics and Prediction of Supertyphoon Megi (2010)
Publisher: American Meteorological Society
Abstract: upertyphoon Megi was the most intense tropical cyclone (TC) of 2010. Megi tracked westward through the western North Pacific and crossed the Philippines on 18 October. Two days later, Megi made a sharp turn to the north, ...
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 ...
Sensitivities of Subseasonal Unified Forecast System Simulations to Changes in Parameterizations of Convection, Cloud Microphysics, and Planetary Boundary Layer
Publisher: American Meteorological Society