青藏高原位于中国西南部，平均海拔4 000 m以上，其地理位置特殊。青藏高原自身大气污染物排放少，空气相对洁 净，是大气污染研究的天然实验室。纳木错站位于青藏高原内陆，该站多种大气污染物浓度整体平均水平较低，是典型的 全球大陆大气背景监测站。尽管喜马拉雅山高耸于青藏高原南部，但由南亚释放的大气污染物仍然能够在大气环流的传输 下，向北跨越喜马拉雅山进入青藏高原内陆，引起纳木错站大气污染物事件级污染。西风环流和印度季风在大气污染物长 距离传输过程中起着重要作用，对不同大气污染物的影响机制存在差异。研究人员在青藏高原内陆纳木错站开展了多种大 气污染物研究，获得一系列研究成果，极大地推动了高原大气污染物科学研究，为中国国际环境谈判提供了科学基础。

The Tibetan Plateau located in the southwest of China with its high elevation (average height over 4 000 m) and special geographical location. The Tibetan Plateau is a natural laboratory for atmospheric pollution research because of its relatively pristine environment and clean air due to its low emission of atmospheric pollutants. Nam Co Station, located in the inland Tibetan Plateau, is a typical atmospheric background station in the Northern Hemisphere. The Himalayas separate the Tibetan Plateau from the South Asia which is heavily polluted. Air pollutants released from South Asia can be transported though the Himalayas to the inland Tibetan Plateau by the transport of air mass. The Indian summer monsoon and westerly circulation played important roles in the long-range transport of atmospheric pollutants and has different mechanisms for different atmospheric pollutants. Researchers have conducted measurements of multiple air pollutants at the Nam Co Station in the inland Tibetan Plateau and obtained a series of results, which greatly promoted the scientific research on air pollution on the plateau and provided a scientific basis for China’s international environmental negotiations.