Vertical distribution characteristics of aerosol optical properties on haze and clear day in Hefei based on CALIOP satellite measuring
YU Cai-xia1,2, YANG Yuan-jian1,2, DENG Xue-liang1,2, Shi Chune1,2, YANG Guan-ying1,2, HUO Yan-feng1,2, ZHAI Jing1,2
1. Key Laboratory of Atmospheric Science and Satellite Remote Sensing, Anhui Institute of Meteorology, Hefei 230031, China;
2. Shouxian National Climate Observatory, Shouxian 232200, China
Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) Satellite and surface observation data in Hefei were applied to conduct contrastive analysis of 532nm extinction efficient, 532nm total attenuated backscatter coefficient, volume depolarization ratio and colour ratio between haze day and clear day. The results showed during the night-time of haze day, pollutants in Hefei gathered within 100~500m with the maximum extinction coefficient value about 0.55. When haze episodes happened, aggregation level was elevated to about 300~700m due to turbulent and the maximum extinction coefficient reached to 0.67. Compared with clear days, 532nm extinction coefficient within 0~1km during haze days increased by 2times, indicating that aerosols were gathered under 1km height. What's more, irregular aerosol with colour ratio value between 0.2~0.6, backscatter coefficient value between 0.001km-1·sr-1and 0.005km-1·sr-1increased when haze event happened.
于彩霞, 杨元建, 邓学良, 石春娥, 杨关盈, 霍彦峰, 翟菁. 基于CALIOP探测的合肥气溶胶垂直分布特征[J]. 中国环境科学, 2017, 37(5): 1677-1683.
YU Cai-xia, YANG Yuan-jian, DENG Xue-liang, Shi Chune, YANG Guan-ying, HUO Yan-feng, ZHAI Jing. Vertical distribution characteristics of aerosol optical properties on haze and clear day in Hefei based on CALIOP satellite measuring. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(5): 1677-1683.
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