評論
打印
But, principally, yes, the Sun creates the temperature differential that creates the areas of high pressure and low pressure that create wind.
但是從原則上來說是這樣的，太陽造成了溫度差別，從而產生了高壓和低壓區域，由此形成了風。
Um...I don’t get what...how it causes a temperature differential.
我沒聽懂......它是怎么產生溫度差別的呢？
Right. Good. This will take us to the role of wind in the climate,
好的，這就要說到風在氣候中扮演的角色了，
the key is that the Sun warms up different parts of Earth at different rates and to different degrees.
關鍵點是太陽會以不同的速度將地球不同的部分加熱到不同的溫度。
For example, at sunrise, the land heats up faster than the ocean, that’s why you get morning sea breezes.
比如，在日出時，陸地熱得比海洋快，這就是會有晨間海風的原因。
The air over the water heats more slowly than air over land,
水面上方的空氣熱得比陸地上方的空氣慢，
so during the early morning, it’s cooler and denser than air overland, so it moves in toward land.
所以在晨間，水面上的空氣就比陸地上方的空氣更涼爽，密度也更大，所以它就會朝著陸地移動。
A sea breeze, what else? Um, the Sun’s energy is more intense near the equator than it is near the poles,
除了海風之外還有什么呢？赤道附近的太陽能比兩極附近的更強烈，
so you’ve got masses of warmer air over the equatorial regions, and masses of cooler air over Polar Regions.
所以赤道地區上方會有暖空氣團，而兩極地區上方會有冷空氣團。
And these masses are constantly interacting with each other, which is critically important for Earth’s climate.
這些空氣團時常互相產生影響，而這對地球的氣候至關重要。
