Retrieval of aerosol optical properties over the Beijing area using POLDER/PARASOL satellite polarization measurements
Retrieval of aerosol optical properties over the Beijing area using POLDER/PARASOL satellite polarization measurements
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DOI：
10.1007/s00376-009-8103-x
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发表时间：
2009-11
影响因子：
5.8
通讯作者：
Xuehua Fan;Hongbin Chen;Longfu Lin;Zhi-gang Han;P. Goloub
中科院分区：
文献类型：
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作者：
Xuehua Fan;Hongbin Chen;Longfu Lin;Zhi-gang Han;P. Goloub
几种典型天气条件下北京和香河地区气溶胶光学特性（晴空、轻霾、重污染、沙尘暴）来源于POLDER地球反射的极化和方向性（偏振和各向异性的反射大气科学与激光雷达观测耦合）多方向，多光谱极化信号的一个更可靠的检索算法，本文提出的。将结果与POLDER/PARASOL小组的业务检索算法和地面AERONET（AErosol ROBOtic NETwork）/PHOTONS（PHOTOMETRIE pour le Traitement Opérational de Normalisation Satellitaire）测量结果进行了比较。结果表明，改进算法得到的气溶胶光学参数与AERONET/PHOTONS实测值吻合较好。气溶胶光学厚度（AOT）和有效半径的反演精度分别为0.06和0.05μm，接近或优于气溶胶直接强迫的反演精度（AOT为0.04，有效半径为0.1μm）。
Aerosol optical properties over Beijing and Xianghe under several typical weather conditions (clear sky, light haze, heavy pollution and dust storm) are derived from POLDER (POLarization and Directionality of the Earth’s Reflectances)/PARASOL (Polarization and Anisotropy of Reflectances for Atmospheric Sciences coupled with Observations from a Lidar) multi-directional, multi-spectral polarized signals using a more reliable retrieval algorithm as proposed in this paper. The results are compared with those of the operational retrieval algorithm of POLDER/PARASOL group and the ground-based AERONET (AErosol RObotic NETwork)/PHOTONS (PHOtométrie pour le Traitement Opérational de Normalisation Satellitaire) measurements. It is shown that the aerosol optical parameters derived from the improved algorithm agree well with AERONET/PHOTONS measurement. The retrieval accuracies of aerosol optical thickness (AOT) and effective radius are 0.06 and 0.05µm respectively, which are close to or better than the required accuracies (0.04 for AOT and 0.1µm for effective radius) for estimating aerosol direct forcing.