This paper provides an appropriate method for predicting strong winds acting on tall buildings erected in close proximity to one another at the center of a city. We first check the accuracy of strong winds estimated using the meso-meteorological model (MM5) without an urban-canopy model above and inside an urban canopy, in comparison with the observational data taken at the rooftop of a high-ri...

Land-surface processes are one of the important drivers for weather and climate systems over the tropics. Realistic representation of land surface processes in mesoscale models over the region will help accurate simulation of numerical forecasts. The present study examines the influence of Land Use/ Land Cover Change (LULC) on the forecasting of cyclone intensity and track prediction using Meso...

The introduction of complex land surface parameterization schemes into regional climate models (RCMs) has been focused on improving the modeling of land surface feedbacks to the atmosphere. As such the modeling of streamflow was considered a by-product of the water balance and until recently it received relatively little attention. Comparison of four RCMs (RegCM2, MM5/BATS, MM5/SHEELS and MM5/O...

Mesoscale meteorological modelling is an important tool to help understand air pollution and heat island effects in urban areas. Accurate wind simulations are difficult to obtain in areas of weak synoptic forcing. Local factors have a dominant role in the circulation and include land surface parameters and their interaction with the atmosphere. This paper examines an episode during the MCMA-200...

Due to rapid growth and expansion, Xiongan New Area is at risk for heatwaves in the present future induced by urban heat island effect. Based on eight combined schemes, including two common WRF surface layer schemes (MM5 Eta) canopy (SLAB, UCM, BEP + BEM), simulation performance 2-m temperature, relative humidity 10-m wind during a heatwave July 2019 was compared analyzed. The ranked from best ...

This paper describes and evaluates an automated riverflow forecasting system for the prediction of peak flows during the cool season of 1998–99 over six watersheds in western Washington. The forecast system is based on the Pennsylvania State University–National Center for Atmospheric Research (Penn State–NCAR) fifthgeneration Mesoscale Model (MM5) and the University of Washington Distributed-Hy...

A comprehensive model evaluation has been conducted for MM5-CMAQ for the period of 1–10 July 1999 of the Southern Oxidants Study episode with a coarse-grid horizontal spacing of 32-km and a nested fine-grid spacing of 8-km. Meteorological and chemical predictions from simulations with both grids are compared with observations from both routine monitoring networks (e.g., CASTNet, IMPROVE, and AI...

The purpose of this paper is to demonstrate the validity of mesoscale numerical weather prediction modeling near the complex terrain at Aubrey Cliffs, Arizona, and to investigate the influence of the outer domain size employed on the computational results. Mesoscale Modeling v5 (MM5) was implemented to produce numerical wind data that was compared with experimental wind data. The results obtain...

Summertime convection over Arizona typically begins in the early afternoon and continues into the night. This suggests that the evolution of the daytime planetary boundary layer is important to the development of Arizona convection. If numerical models are to provide useful guidance for forecasting convection during the monsoon, then the planetary boundary layer must be simulated as accurately ...

We have applied the MM5-CMAQ model to simulate the high concentrations in PM10 and PM2.5 during a winter episode (2003) in Central Europe. The selected period is January 15 – April 6 2003. Values of daily mean concentrations up to 75 μgm are found on average of several monitoring stations in Northern Germany. This model evaluation shows that there is an increasing underestimation of primary and...