Application of a global nonhydrostatic model with a stretched-grid system to regional aerosol simulations around Japan

• DOI: 10.5194/gmdd-7-131-2014
• Publication Date: 2014-01-08T06:39:04Z
• Authors: D. Goto; T. Dai; M. Satoh; H. Tomita; J. Uchida; S. Misawa; T. Inoue; H. Tsuruta; K. Ueda; C. F. S. Ng; A. Takami; N. Sugimoto; A. Shimizu; T. Ohara; T. Nakajima
• Keywords: Horizontal resolution; Atmospheric models

Abstract. An aerosol-coupled global nonhydrostatic model with a stretched-grid system has been developed. Circulations over the and target domains are simulated single model, which includes fine meshes covering region to calculate meso-scale circulations. The stretched involves relatively low computational costs simulate atmospheric aerosols horizontal resolutions compared uniform model. As opposed general regional models, neither nesting technique nor boundary conditions required. In this study, we developed new air-quality for simulation of areas surrounding Tokyo, Japan, maximum resolution approximately 10 km. We determined that was capable simulating meteorological fields anthropogenic primary particles, e.g., elemental carbon, secondary such as sulfate, comparable results those found in-situ measurements other models. By combining obtained from an atmosphere-ocean coupled also applied climate scenario experiment PM2.5 (aerosol particles diameters less than 2.5 μm) Japan high assess public health impact at prefecture scale.