青藏高原气溶胶光学厚度（AOD）数据集（2021）

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 obtained via continuous measurements using a Cimel 318 sun photometer, covering two stations: the Mount Qomolangma Station and the Nam Co Station. All products in this dataset have undergone cloud detection processing. The dataset spans the period from January 1, 2021 to December 31, 2021, with a daily temporal resolution. The sun photometer is equipped with 8 observation channels ranging from visible to near-infrared spectrum, with central wavelengths of 340, 380, 440, 500, 670, 870, 940 and 1120 nm respectively. The instrument has a field of view (FOV) of 1.2°, and its solar tracking accuracy reaches 0.1°. Six bands of aerosol optical depth (AOD) can be retrieved from direct solar radiation measurements, with an estimated accuracy of 0.01–0.02. Finally, using the unified inversion algorithm standardized by AERONET, a suite of aerosol optical products are derived, including aerosol optical depth, Ångström exponent, particle size distribution, single-scattering albedo, phase function, complex refractive index and asymmetry factor.

搜集汇总

背景与挑战

背景概述

该数据集为2021年青藏高原地区的气溶胶光学厚度（AOD）地基观测数据，基于Cimel 318太阳光度计在珠峰站和纳木错站逐日采集，时间覆盖2021年全年。数据经过云检测和AERONET算法反演，提供包括气溶胶光学厚度、Ångström指数、粒度谱等在内的多波段气溶胶光学特性，空间分辨率为10km至100km，适用于气溶胶气候效应和大气质量研究。