Yuki MATSUURA
The effect of horizontal resolution for performing mesoscale meteorological simulation in Hokuriku region
Toshiro KUMAKURA
More than half part of a country has been hit by heavy snowfall in Japan. For preventing snow disaster, a numerical weather prediction model which developed by Japan Meteorological Agency is useful. The numerical model simulates meteorological conditions according to horizontal resolution as terrain characteristics. Then we quantify discuss the horizontal grid size of the numerical models. To solve the horizontal terrain characteristics, two-dimensional spectral analysis is applied to four regions which are different spatial scales. It is found that the large horizontal grid size (i.e. >5km) was not enough to express terrain variance in every case. And the numerical simulation models are performed to estimate the influence of the different grid size. It is also found that the simulating results are different each other according to the difference of the horizontal gird size. It is suggested that selecting the effective horizontal grid size is important to consider the terrain influence.
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