Visible snow occurred before the heavy fog,and snow melting rapidly increased the humidity near the surface. During the fog,significant night radiation caused the temperature inversion near the surface.
大雾前期出现了明显降雪,雪后融化使近地面层湿度迅速增加;大雾期间,夜间辐射明显,近地层大气有逆温层结建立。
参考来源 - 2007年1月初河北省连续大雾的成因分析·2,447,543篇论文数据,部分数据来源于NoteExpress
N an abnormal increase in temperature with height in the troposphere 温度逆增 [meteorol]
The temperature inversion frequency gets highest in winter.
冬季的逆温频率最高。
But sometimes there is an unusual weather condition called a temperature inversion.
但有时会有一种被称作“温度逆增”的不平常的天气状态。
Combined with the factors such as rainfall, temperature inversion and others, calculated results were analysed.
结合降雨、逆温等因素对计算结果进行了分析。
OK, for most gases, T inversion is much 300K greater than 300 degrees Kelvin. Much greater than room temperature.
好,对大多数气体,转变温度都高于,比室温高很多。
But now, so this is where the refrigeration comes in. So if you take a gas, and you're below the inversion temperature and you make it go through this irreversible process, the gas comes out colder from that side than that side.
这就是冰箱的原理,如果在低于转变温度,的情况下我们将气体经过,这个不可逆过程,气体出来的温度将比这边低。
We use a liquid helium. And so in order to make a liquid helium, you can't take helium at room temperature and do this, because if you did, you would just heat it up, because the room temperature is above the inversion temperature, so Joule-Thomson would heat up the helium.
为了得到液氦,不能再常温,做这个实验,否则就是加热氦气,因为室温高于它的转变温度,所以焦耳-汤姆孙,实验会加热氦气。
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