WIT Press


A Numerical Study On Acid Rain And Neutralization By Yellow-sand In East Asia

Price

Free (open access)

Paper DOI

10.2495/AIR000121

Volume

42

Pages

10

Published

2000

Size

1,184 kb

Author(s)

H. Ueda, Z. Wang, & H. Terada

Abstract

An Air Quality Prediction Modeling System (AQPMS) was used to investigate the neutralization of acid rain by yellow-sand in East Asia. A new deflation module of the yellow sand was designed to provide explicit information on the dust loading. Different from the previous ones for Sahara and Australian deserts, it included three major predictors, i.e., the friction velocity; the surface humidity and the predominant weather system. It was linked to AQPMS, which consisted of the advection, diffusion, dry and wet deposition, gas-phase chemistry and the liquid-phase chemistry. The predicted pH values and sulfate- and nitrate-ion levels of precipitation, together with the surface concentrations of gaseous pollutants, were compared with measured values and a rea

Keywords