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晴天雨天哪个气压高
更新时间: 2020-11-02 00:00:00  

晴天的气压高。大气压的变化跟天气有关,在不同时间,同一地方的大气压并不完全相同。水蒸气的密度比空气密度小,当空气中含有较多水蒸气时,空气密度要变小,大气压也随着降低。一般说来阴雨天的大气压比晴天小,晴天发现大气压突然降低是将下雨的先兆;而连续下了几天雨发现大气压变大,可以预计即将转晴。另外,大气压的变化跟温度也有关系。因气温升高时空气密度变小,所以气温高时大气压比气温低时要小些。

关键词: 晴天 雨天 哪个 气压

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