一次沙尘暴期间PM10等粒子浓度的变化特征及与气象要素的关系

In this paper, using by observed data of SACOL (Semi-Arid Climate Observation Laboratory ) , the concentration changing characteristics of PM10、SO2 、NOx was analyzed, the relationship between particles and meteorological elements was analyzed in a dust storm occurred in March 14 /2009. The results show that, during the dust storm, the concentration of PM10 would increased as much 4 times as normal, with gravity settling and high wind speed, PM10 concentration will be "two-humped" pattern. which was decreasing slowly with dust storm passed, the concentration will be at around normal level after 10 hours. The concentration of SO2 and NOx are strongly influenced by dust storm, the response of NOx faster than SO2 to dust storm. There are remarkable changes of temperature, wind and pressure during dust storm. the meteorology elements relate close to aerosol concentration.