We present an analysis of version 5.1 of the Community Atmospheric Model (CAM5.1) at a high horizontal resolution. Intercomparison of this global model at approximately 0.25 , 1 , and 2 is presented for extreme daily precipitation as well as for a suite of seasonal mean fields. In general, extreme precipitation amounts are larger in high resolution than in lower-resolution configurations. In ma...

[1] Empirical orthogonal functions are used together with standard statistical metrics to evaluate the ability of models with different spatial resolutions to reproduce observed patterns of surface ozone (O3) in the eastern United States in the summer of 1995. We examine simulations with the regional Multiscale Air Quality Simulation Platform model (horizontal resolution of 36 km) and the globa...

The behavior of rotating and non-rotating aggregated convection is examined at various horizontal resolutions using the hypohydrostatic, or Reduced Acceleration in the VErtical (RAVE), rescaling. This modification of the equations of motion reduces the scale separation between convective and larger-scale motions, enabling the simultaneous and explicit representation of both types of flow in a s...

. introduction tropical cyclones (tcs), all over the world, are recognized as the most common and most devastating of all the natural disasters. nearly 80–90 tcs occur around the globe that about 40–50 attain intensity of 33 m/s (frank and george, 2007). approximately 7% of tcs originate in north of indian ocean and nearly 2% in arabian sea (wmo report, 2008). the prediction of tc track has bee...

The behavior of rotating and nonrotating aggregated convection is examined at various horizontal resolutions using the hypohydrostatic, or reduced acceleration in the vertical (RAVE), rescaling. This modification of the equations of motion reduces the scale separation between convectiveand larger-scale motions, enabling the simultaneous and explicit representation of both types of flow in a sin...

The grid nudging technique is often used in regional climate dynamical 12 downscaling to make the simulated large-scale fields consistent with the driving fields. In this 13 study, we focused on two specific questions about grid nudging: (1) which nudged variable 14 had a larger impact on the downscaling results and (2) what was the “optimal” grid nudging 15 strategy for each nudged variable to...