中国中西部气溶胶光学厚度数据集（2003-2018）

本数据集包括Aqua卫星搭载的中分辨率成像光谱仪（MODIS）测量的中国中西部地区气溶胶光学厚度数据。MODIS采用DT算法（Deep Blue）和DB算法（Dark target）分别反演出全球范围内的两种数据，数据集提供这两种数据（DT、DB）及其融合（Merge）数据，共三种数据在550nm处的气溶胶光学厚度数据及其空间分布信息。本项目针对研究区共统计出2003.7月月-2018.11月共197个月的气溶胶光学厚度值。该数据集为hdf5格式的数据，数据将作为中国中西部地区气溶胶污染状况及背景值的参考数据集。

This dataset contains aerosol optical depth (AOD) data over central and western China measured by the Moderate Resolution Imaging Spectroradiometer (MODIS) onboard the Aqua satellite. MODIS retrieves two global datasets using the DT (Deep Blue) and DB (Dark Target) algorithms respectively. This dataset provides the 550 nm aerosol optical depth data and their spatial distribution information for these two datasets (DT, DB) as well as their merged (Merge) product, totaling three types of data. For the study area, a total of 197 months of AOD values from July 2003 to November 2018 have been compiled. Stored in HDF5 format, this dataset will serve as a reference dataset for characterizing aerosol pollution conditions and background values over central and western China.