中国空气中缺少灰尘反而使污染更严重?_BEC初级作文

中国空气中缺少灰尘反而使污染更严重?

但这项新的研究表明，戈壁的风沙对人为因素造成的空气污染可以起到调节作用。

Using models to simulate 150 years of wind and dust patterns in the region, the researchers found that the dust deflects significant amounts of sunlight.

通过模拟这一地区150年以来刮风以及灰尘样本进行分析，研究人员发现，灰尘对阳光能起到显著的散射作用。

Differences in the temperatures between land and sea cause the winds to blow. Without the dust, the land warms up more and that changes the temperature differential with the sea leading to weaker breezes - and more air pollution.

风的形成来自海洋和陆地之间的温差。如果没有灰尘，地面的温度就会更高，从而改变了陆地和海洋温差的比值，并导致了风力减弱，空气污染就更严重了。

"There are two dust sources. One is the Gobi and the other is the highlands of north-west China, but we found the Gobi had much more influence," said lead author Yang Yang, from the Pacific Northwest National Laboratory in Washington State, US.

来自美国华盛顿州太平洋西北国家实验室、该研究的首席作者杨阳表示：“灰尘来自两个地方。一个是戈壁、另一个是中国西北部的高原，但我们发现戈壁施加的影响更大。”

"Less dust in the atmosphere causes more solar radiation to reach the surface. It weakens the temperature difference between the land and the sea and impacts the circulation of the winds and causes a stagnation over eastern China and that causes an accumulation of air pollution."