Numerical Simulation Study of Winter Pollutant Transport Characteristics over Lanzhou City, Northwest China

A satellite remote sensing based assessment of urban heat island in Lanzhou city , northwest China

As a promising application, quantitative remote sensing of urban heat island (UHI) could facilitate our understanding of urban/suburban environment and its relationship with urbanization. This paper investigates the urban heat island effect of Lanzhou, China, a densely built up city in a valley, based on Landsat ETM+ image acquired on April 22, 2000, whose spatial resolution is sufficient for m...

Atmospheric Effects on Winter SO2 Pollution in Lanzhou China

Lanzhou is one of the most polluted cities in China. Sulfur dioxide (SO2) concentrations have shown evident seasonal variability. Pollution was generally within the second-level criterion (b0.15mgm) in spring, summer, and fall but wasmuch higher than the second-level criterion and sometimes reaches mid-level pollution (APIN200) in winter. Meteorological conditions (low winds, stable stratificat...

Sensitivity Analysis of Different Convection Schemes and Center Domains for Numerical Simulation of Winter Precipitation Over Iran

This paper qualifies the effect of different convection schemes and center-domains on the simulation of winter precipitation over Iran using RegCM3 numerical climate model. It is compressible, finite difference with hydrostatic equilibrium in sigma coordinate with a semi-implicit algorithm for reduction of horizontal diffusion. Iran experienced two dry and wet periods during winters of 1997 and...

Simulation of Pollutant Transport Usinga Particle Method

Simulation of Pollutant Transport Using a Particle Method S. Zimmermann,∗ P. Koumoutsakos,† and W. Kinzelbach∗ ∗Institute of Hydromechanics and Water Resources Management (IHW), ETH Hönggerberg, Zürich CH-8093, Switzerland; and †Institute of Computational Sciences, ETH, Zürich CH-8092, Switzerland, and CTR, NASA Ames 202A-1, Moffett Field, California 94035 E-mail: [email protected], p...

Numerical Simulation of Transport Phenomena in Nuclear Cores