气候变化

你经常在新闻中听到的是气候变化。这到底是怎么回事?科学家们认为地球上的天气模式将会发生长期的变化。是什么推动了这一趋势?这个想法被称为温室效应。现在地球大气中气体如二氧化碳或甲烷,允许普通光穿过但他们阻止或反映了所谓的红外线的热的形式,这是一件好事,因为温室效应,当太阳下山我们不突然开始冻结。如果你在月球上，月球没有大气层来帮助捕获热量。当你在阳光直射的外面时，热量很少，你会被冻住，所以温室效应有助于保持地球温暖，这样我们就能以我们喜欢的方式生活。然而，如果你增加温室气体的水平，你最终会捕获更多的热量。现在热是能量的一种形式的能量,帮助推动我们天气模式如果你开始添加越来越多的全球热系统,有越来越多的能量驱动气候模式的想法是,你可能会得到洋流的变化,更大的能量风暴, more energy evaporating water from the oceans to produce rain, now the problem is is that this winds up generating really unpredictable effects, somethings may actually be changes that we a lot might like. For example the Northern ice cap is starting to melt and there's a lot of interest by countries like China that would like to go through the Antarctica Ocean with their cargo ships. Normally that doesn't work so because there's a relative a constant ice cap. Well if it melts during the summer, they can take a greatly shortened trip to Europe and deliver their goods there so they may say,"Hey, that's a good side effect," but some of the side effects that we may not like could be changes in rainfall patterns so areas of say the US that are currently major farm crops that raise a lot of the world's food, they may start losing some of their rainfall effects and that may wind up no longer being as profitable and not able to make as much food.
世界上其他一些目前还不错的地区，可能会开始出现更极端的天气。海湾地区的天气非常好，我希望没有任何气候变化。好吧，现在新英格兰的一些人正在遭受暴风雪。我们一直有暴风雪，所以我不会说这是因为气候变化，但最近几年我们有一些非常强的暴风雪，所以谁知道呢?也许是因为整个气候变化。