Transport of KOSA,SOx, and NOx from Asia to North-polar Region

1994/95和1995/96年冬季在挪威的Ny-Aalesund和美国阿拉斯加的费尔班克斯进行了大气气溶胶和极地平流层云的激光雷达测量。在挪威的Ny-Aalesund，还使用了气载颗粒物计数器来观察大气颗粒物的粒径分布。1994年和1995年夏季在我国北极地区进行了大气气溶胶的观测，根据激光雷达和气球观测结果，平流层气溶胶从低、中纬度向高纬度的输送是活跃的。冬季极涡中的气溶胶过程似乎是平流层气溶胶的有效汇，在平流层气溶胶颗粒和气体的全球收支中起着重要作用。1994年夏季在北京进行的气球观测表明，来自地面的土壤颗粒不仅分布在自由对流层，而且还分布在平流层下部，日本激光雷达和飞机观测结果表明，夏季大陆大气平流层中有大量颗粒物在对流层中从亚洲大陆输送到中太平洋西部地区。有时粒子在自由对流层中运动时发生强烈的化学变化。

Lidar Measurements on atmospheric aerosols and polar stratospheric clouds were performed at Ny-Aalesund, Norway and Fairbanks, Alaska, USA in winter of 1994/95 and 1995/96. Balloon-borne particle counter also was used to see size distribution of atmospheric particles at Ny-Aalesund, Norway. In summer season of 1994 and 1995 collection of atmospheric aerosols was made in China.According to lidar and balloon measurements at north polar region, stratospheric aerosols were actively transported from low-and mid-latitudes to high latitudes. In winter season aerosol processes in the polar vortex seem to act as effective sink of stratospheric earosols and important role in global budget of stratospheric materials including earosol particulate and gases.Balloon measurements made in summer of 1994 at Beijin suggested that soil particles originating from the groud distributed not only in the free troporphere but also in the lower stratosphere, suugesting that active convection of air affected chemical composition of stratospheric particles in the summer continental atmosphere.Lidar and aircrafts measurements made in Japan showed that lots of particulate matter were transported in the free troposphere from asian continent to west central pasific area. Sometimes the particles were strongly chemically transformed during their traveling in the free troposphere.