通过自主研发的基于光腔衰荡光谱技术的气溶胶消光仪,对昆山大气气溶胶的消光性质进行观测实验,并研究了相对湿度对气溶胶消光系数的影响.观测结果表明:监测点的大气气溶胶消光系数较高,且日变化在早晨7:00出现最高值,至下午17:00达到最低值后开始回升,其主要是由气象条件及周边强污染源的影响造成.气溶胶亲水特性实验表明:监测点的大气气溶胶多为污染海洋型,受周围环境相对湿度的影响较大.该研究结果为后期结合气溶胶质谱等其它监测仪器对该地大气气溶胶性质进行进一步观测研究具有一定的指导意义.
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