A31D-0096
Simulation and validation of global aerosol distributions using a nonhydrostatic icosahedral atmospheric model with 14 km grid spacing

Wednesday, 16 December 2015
Poster Hall (Moscone South)
Daisuke Goto, NIES National Institute of Environmental Studies, Ibaraki, Japan, Yousuke Sato, RIKEN Advanced Institute for Computational Science (AICS), Kobe, Japan, Hisashi Yashiro, RIKEN Advanced Institute for Computational Sciences, Kobe, Japan, Kentaroh Suzuki, Atmosphere and Ocean Research Institute University of Tokyo, Tokyo, Japan and Teruyuki Nakajima, JAXA Japan Aerospace Exploration Agency, Sagamihara, Japan
Abstract:
It is essential for an accurate simulation of air pollutions to have a good representation of the cloud system, because it strongly affects the distribution of air pollutions through its physical processes. For this problem, the global atmospheric chemistry model coupled to the high-resolution non-hydrostatic icosahedral atmospheric model (NICAM-Chem) was developed and evaluated. Previously, using the model with a regionally enhanced grid spacing of 10km, we assessed the amount of aerosol distributions in August over the East Asia. In this time, we applied the model with the global quasi-uniform grid spacing of 14km resolution in different seasons using the K-supercomputer system (proposal numbers 140046 and 150156).

For the presentation, the month-long simulations in four different months (January, April, July, and October) are performed. The seasonal variations of the NICAM-Chem simulated global aerosol distributions as well as the cloud/precipitation fields are compared with in-situ measurements (AERONET) and satellite observations (e.g., MODIS). As a result, we find that the results simulated by NICAM-Chem are generally comparable to those obtained by the observations.

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