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Controlling the Computational Modes of the Arbitrarily Structured C Grid
Publisher: American Meteorological Society
Abstract: he arbitrarily structured C grid, Thuburn?Ringler?Skamarock?Klemp (TRiSK), is being used in the Model for Prediction Across Scales (MPAS) and is being considered by the Met Office for their next dynamical core. However, ...
Curl-Free Pressure Gradients over Orography in a Solution of the Fully Compressible Euler Equations with Implicit Treatment of Acoustic and Gravity Waves
Publisher: American Meteorological Society
Abstract: teep orography can cause noisy solutions and instability in models of the atmosphere. A new technique for modeling flow over orography is introduced that guarantees curl-free gradients on arbitrary grids, implying that the ...
The Role of Atmosphere Feedbacks during ENSO in the CMIP3 Models. Part III: The Shortwave Flux Feedback
Publisher: American Meteorological Society
Abstract: revious studies using coupled general circulation models (GCMs) suggest that the atmosphere model plays a dominant role in the modeled El Niño?Southern Oscillation (ENSO), and that intermodel differences in the thermodynamical ...
Voronoi, Delaunay, and Block-Structured Mesh Refinement for Solution of the Shallow-Water Equations on the Sphere
Publisher: American Meteorological Society
Abstract: Alternative meshes of the sphere and adaptive mesh refinement could be immensely beneficial for weather and climate forecasts, but it is not clear how mesh refinement should be achieved. A finite-volume model that solves ...
Computational Modes and Grid Imprinting on Five Quasi-Uniform Spherical C Grids
Publisher: American Meteorological Society
Abstract: urrently, most operational forecasting models use latitude?longitude grids, whose convergence of meridians toward the poles limits parallel scaling. Quasi-uniform grids might avoid this limitation. Thuburn et al. and Ringler ...
The Importance of High-Frequency Sea Surface Temperature Variability to the Intraseasonal Oscillation of Indian Monsoon Rainfall
Publisher: American Meteorological Society
Abstract: While the Indian monsoon exhibits substantial variability on interannual time scales, its intraseasonal variability (ISV) is of greater magnitude and hence of critical importance for monsoon predictability. This ISV comprises ...
The Intraseasonal Variability of the Indian Summer Monsoon Using TMI Sea Surface Temperatures and ECMWF Reanalysis
Publisher: American Meteorological Society
Abstract: The northward-propagating intraseasonal (30?40 day) oscillation (NPISO) between active and break monsoon phases exerts a critical control on summer-season rainfall totals over India. Advances in diagnosing these events and ...
Methods and Resources for Climate Impacts Research
Publisher: American Meteorological Society
Abstract: The prediction of climate variability and change requires the use of a range of simulation models. Multiple climate model simulations are needed to sample the inherent uncertainties in seasonal to centennial prediction. ...
The Impact of Finer-Resolution Air–Sea Coupling on the Intraseasonal Oscillation of the Indian Monsoon
Publisher: American Meteorological Society
Abstract: newly assembled atmosphere?ocean coupled model, called HadKPP, is described and then used to determine the effects of subdaily air?sea coupling and fine near-surface ocean vertical resolution on the representation of the ...