摘要
本文利用邱金桓提出的根据总直接太阳辐射反演0.75微米的气溶胶光学厚度的方法,以2002年3月20日至3月22日发生在我国的沙尘天气为例,使用中国气象局国家卫星气象中心提供的总直接太阳辐射观测资料,以三个观测站点:阿克苏、吐鲁番和福山为例,反演沙尘粒子光学厚度的日变化,并进行了对比检验。结果表明同一地点一天中早晚沙尘粒子光学厚度较小,中午较大;不同地点的沙尘粒子光学厚度随着该地点离沙尘源头的远近而不同,当距离越近时,沙尘粒子光学厚度的值也就越大,反之则越小,这与沙尘粒子迁移性的特点相适应。
We use the method by Qiu to invert 0.75μm aerosol optical depth from total direct solar radiation for the sand dust events in China during March 20 - 22, 2002. Observation data measured by National Satellite Meteorological Center, Chinese Meteorologic Bureau, for Akes, Tulufan and Fushan observation stations are used to demonstrate the inversion method. The results show sand - dust optical depths in the morning and evening are smaller than those at noon for the same station for a single day. The sand- dust optical depth is different for the three different stations and varies with distance away from the location of the head stream of sand storm. When the distance is closer, the sand dust optical depth is greater. The characteristic is related to the transport of sand- dust.
出处
《光散射学报》
2005年第4期372-377,共6页
The Journal of Light Scattering
基金
国家自然科学基金资助项目(40271079)
