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是空气温度改变导致地面温度改变,还是地面温度改变导致空气温度改变?
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是空气温度改变导致地面温度改变,还是地面温度改变导致空气温度改变?
时间:2021-12-26 02:35
关键词:
建筑外环境
土木建筑工程
大学试题
工学
答案解析
<p> 大气中的气体分子在吸收和放射辐射能时具有选择性,它对太阳辐射几乎是透明体,直接接受太阳辐射的增温是非常微弱。主要靠吸收地面的长波辐射而升温。<br> 而地面温度的变化取决于太阳辐射和对大气的长波辐射。因此,地面与空气的热量交换是气温升降的直接原因,地面温度决定了空气温度。</p>
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是空气温度改变导致地面温度改变,还是地面温度改变导致空气温度改变?
地面有效辐射的影响因子: 地面温度、()、空气湿度、云况、()、海拔、地面状况和植被等 地面温度升高,E0();大气温度升高,E0(); 空气湿度增大,天空云量加大、云层加厚,E0(); 地面状况:E0粗糙>E0平滑,E0潮湿>E0干燥; 风改变局地空气温湿度;海拔高度增大,E0()。
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