天气预报 > 其他 > 为什么拉萨日照时间长
为什么拉萨日照时间长
更新时间: 2020-10-09 00:00:00  

因为拉萨地处青藏高原,海拔3658米,大气层薄而空气密度稀,水汽含量少,加上空气中不像西北地区含尘量大,大气透明度十分良好,太阳光在穿过大气层时发生光的折射和散射,因此阳光透过大气照射到拉萨,在大气层中被吸收,散射的量特别少,并且拉萨的纬度较低,所以日照时间长。

关键词: 为什么 拉萨 日照 时间

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