夏季湿度大，温度日变化大吗?-地江南体育网页版球科学堆栈交换江南电子竞技平台 最近30个来自www.hoelymoley.com 2023 - 04 - 02 - t05:46:58z //www.hoelymoley.com/feeds/question/23326 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/23326 2 夏季湿度大，温度日变化大吗? 可能 //www.hoelymoley.com/users/5016 2021 - 12 - 18 - t15:02:46z 2021 - 12 - 20 - t13:00:00z 夏季的温度变化似乎比冬季更大(图片:英国的最高和最低温度- source)。< / p > < p > < a href = " https://i.stack.imgur.com/GUJ3P.png " rel =“nofollow”noreferrer > < img src = " https://i.stack.imgur.com/GUJ3P.png " alt = " http://projectbritain.com/climate.html " / > < / > < / p > < p >我的假设是,这是因为在冬天有一个更大的湿度(< a href = " https://www.researchgate.net/publication/344649076_Ventilation_in_Architecture_and_Planning_K14VAP_MSc_Renewable_Energy_and_Architecture/figures?lo=1 " rel =“nofollow”noreferrer > < / >来源-伊朗),因为在夏天,更多的水蒸发并形成云，这意味着空气中吸收太阳能量的水变少了。我说的对吗?

https://www.researchgate.net/publication/344649076_Ventilation_in_Architecture_and_Planning_K14VAP_MSc_Renewable_Energy_and_Architecture/figures?lo=1

 //www.hoelymoley.com/questions/23326/-/23330#23330 3. 由于湿度较大，夏季的昼夜温度变化是否更大? JeopardyTempest //www.hoelymoley.com/users/6298 2021 - 12 - 19 - t15:21:38z 2021 - 12 - 19 - t18:11:31z < p >不是……你的假设有些问题。

首先，这取决于你对可变性的定义....如果你指的是每天的高温和低温之间的差异，正如你的图表所显示的那样，在夏天大多数地方确实更大(例外也存在，看看像印度这样的季风性地方)。

然而变化也可以意味着每天可以达到的热或冷的范围，这通常在冬天更大(看看下图中伦敦的红线或红色区域有多高):

enter image description here
(来源:ClimateCharts.net)

因此，夏天的每一天通常都有更大的运动，而冬天往往有更大的波动，年与年之间，通常是每周与每周(取决于锋面和风暴的时间和地点)

但关注实际的昼夜差异，夏季确实倾向于更大……你对湿度的一些想法有问题:

  • 云是空气中有相当合理的湿度的证据……当空气移动到那个高度时，它们就形成了。的水分。它们不会夺走空气中的水分，而是“太多”的证据。

  • And indeed there is more actual water vapor in the air during the summer in the UK, as measured by the dew point temperature:

enter image description here (Source for values: TimeAndDate.com)

  • Water vapor does absorb some sunlight (more than most tropospheric gases)... but is not the primary way the Earth is heated:

enter image description here.
(Source: NASA education site)

The ground absorbs most solar energy, and then heats the air in contact with it. So water vapor absorbing sunlight isn't a big deal to the weather. It is much more important as a greenhouse gas, redirecting the ground's heat radiation back downward, both day and night.

Also, clouds have a bigger impact on sunlight's energy than water vapor... because they reflect sunlight greatly (something verified by being in the sun when a cloud blocks it!)

  • It also can be cloudier in some places during the winter... as shown by this graph for the UK (also true for Iran and Czechia):

enter image description here (Source: Weather Spark)

Fog and stratus are clouds just as much as any others. Now there tends to be more bubbly cumulus in the summer, more deep convection rising through the atmosphere. But again, this isn't robbing the atmosphere of water vapor, it's an indication of a fair amount.

So why is there more diurnal temperature movement during the summer?

I'd suggest it's because there's a larger diurnal heating difference... in other words the sunlight is "hotter" in the summer (due to a more direct angle), and lasts longer. Then most places still cool back down to nearer the dew point at night. The extra moisture in the summer if anything dampens the diurnal range in summer (see comments about the factors).

Whereas thick persistent clouds in places like London during the winter particularly tend to limit the diurnal range by cooling the daytime and warming the nighttime.
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