紅葉まっ盛り・・・ Autumnal Tints

　ここは榛名湖周辺の紅葉です。標高と気温の関係は概ね１００ｍ高くなると１℃下がることから、ここは標高１０８４ｍで高崎市街地より丁度１０００ｍ高いので気温が約１０℃下がります。

　一方、標高と気圧の関係は概ね 10 m の上昇で 1 hPa 下がります。ですから、榛名湖では高崎市街地より、およそ１００hPa低くなります

 The photo shows the autumn leaves around Lake Haruna where it is 1084m in altitude. Generally, since the relationship between altitude and temperature, it drops by 1°C for every 100m higher. So here is １０℃ lower than the city of Takasaki, because here is just 1000m higher.

 On the other hand, the relationship between altitude and atmospheric pressure, it drops by 1 hPa for every 10m higher. So it is about 100 hPa lower at Lake Haruna than Takasaki.

https://www.youtube.com/watch?v=CwsuMUiztF0