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为什么金星表面温度特别gao?

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为什么金星表面温度特别高?

金星离太yang比地球近30%左右,它表面温度应该比地球高些,这是完全可以预料和理解的。可是,当科学家们通过观测发现金星表面温度竟高达465"C -485"C的时候,也gan到有点惊讶。什么原因使得金星表面温度如此高呢?在空间探测qi接二连三地对金星大气层和表面进行现场考察之后才知dao,金星大气中二氧化碳的han量达到难以想象的程度:在97%以上。接近地面的二氧化碳han量还要高些,达99%,几乎全是二氧化碳。太yang光穿过金星大气,照she1到金星地面,由于nong1密的二氧化碳就像是一床大棉被,太yang辐she1的热量在金星表面附近越积越多,温度也越来越高,产生了所谓的“温室效应”,终于达到了465"C -485"C。

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