2021年青藏高原气溶胶光学厚度（AOD）数据集

青藏高原气溶胶光学特性地基观测数据集采用Cimel 318太阳光度计连续观测获得，涉及珠峰站和纳木错站共两个站点。这些产品是经过云检测之后的结果。数据覆盖时间从2021年1月1日到2021年12月31日，时间分辨率为逐日。太阳光度计在可见光至近红外设有8个观测通道，中心波长分别为：340、380、440、500、670、870、940和1120 nm。仪器的视场角为1.2°，太阳跟踪精度为0.1°。根据太阳直接辐射可获得6个波段的气溶胶光学厚度，精度估计为0.01-0.02。最终采用AERONET统一反演算法，获得气溶胶光学厚度、Ångström指数、粒度谱、单次散射反照率、相函数、复折射指数和不对称因子等。

The ground-based observation dataset of aerosol optical properties over the Qinghai-Tibet Plateau was continuously collected using a Cimel 318 solar photometer, covering two stations: the Mount Qomolangma Station and the Nam Co Station. All derived products are post-cloud-detection results. The dataset covers the period from January 1, 2021 to December 31, 2021, with a daily temporal resolution. The solar photometer is equipped with 8 observation channels ranging from visible to near-infrared spectrum, with central wavelengths at 340, 380, 440, 500, 670, 870, 940 and 1120 nm respectively. The instrument has a field of view of 1.2°, and the solar tracking accuracy is 0.1°. Aerosol optical depth at 6 bands can be retrieved from solar direct radiation, with an estimated accuracy of 0.01-0.02. Finally, the unified AERONET inversion algorithm is adopted to obtain multiple aerosol parameters including aerosol optical depth, Ångström exponent, particle size distribution, single-scattering albedo, phase function, complex refractive index and asymmetry factor.