10:15 AM - 10:30 AM
[MIS10-06] Influence of atmospheric pressure pattern and mountain topography on snow cover distribution in the Chubu mountainous region
Keywords:amount of snow, the mountainous topography, pressure pattern, Japan sea Polar air mass Convergence Zone(JPCZ)
Last winter, the Northern Alps Yari Hotaka mountain range had a remarkable lack of snow. However, in mountain areas other than the Yari Hotaka mountain range, such a tendency is not seen, and on the contrary, there are many places where a lot of snow is observed. Even this winter, at the end of January, the amount of snow accumulated around Mt. Nishi hotakadake was record low, showing a similar trend to last winter. I think that this is largely due to the wind from the west associated with the formation of the Japan sea Polar air mass Convergence Zone (JPCZ) and the mountainous topography.
Meteorological observations have been conducted for many years in the vicinity of Nishiho Sanso, which is located at an altitude of 2367m on Mt. Nishihotakadake, and snow cover data have been accumulated. Using this data and data from other locations in the Chubu mountainous region, we clarify the difference in pressure patterns in years with heavy and low snow cover, and how mountain topography affected snow cover.
Meteorological observations have been conducted for many years in the vicinity of Nishiho Sanso, which is located at an altitude of 2367m on Mt. Nishihotakadake, and snow cover data have been accumulated. Using this data and data from other locations in the Chubu mountainous region, we clarify the difference in pressure patterns in years with heavy and low snow cover, and how mountain topography affected snow cover.