NOAA JPSS Visible Infrared Imaging Radiometer Suite (VIIRS) Aerosol Detection Environmental Data Record (EDR) from NDE

This dataset contains a high quality operational Environmental Data Record (EDR) of suspended matter from the Visible Infrared Imaging Radiometer Suite (VIIRS) instrument onboard the Suomi-NPP satellite and is produced by the NOAA Satellite and Information Service (NESDIS). The retrieval algorithm is based on a legacy product originally developed for the Moderate Resolution Imaging Spectroradiometer (MODIS) sensor but is adapted and improved upon for use by VIIRS. The aerosol mask indicates the presence of either smoke or dust. The dust and smoke masks indicate the presence of dust and smoke, respectively. Because the presence of smoke and dust are independently derived, a given pixel can be identified with both dust and smoke. The product also includes data quality information for on-earth pixels. Note, the binary aerosol, dust, and smoke mask values are dimensionless quantities. The algorithm utilizes fourteen different spectral bands ranging from 0.412 to 12 microns. The spatial resolution is 1 kilometer (km) and the temporal resolution provides global coverage daily. VIIRS Aerosol Detection data distributed by the NESDIS Data Exploitation system (NDE) and obtained from the Comprehensive Large-Array Stewardship System (CLASS) are distributed as single 86-second granules in NetCDF-4 format with metadata attributes included.

本数据集包含一套高质量的业务化悬浮物质环境数据记录（Environmental Data Record, EDR），数据源自Suomi-NPP卫星搭载的可见红外成像辐射计套件（Visible Infrared Imaging Radiometer Suite, VIIRS），由美国国家海洋和大气管理局卫星与信息服务中心（NOAA Satellite and Information Service, NESDIS）制作。
其反演算法基于最初为中分辨率成像光谱仪（Moderate Resolution Imaging Spectroradiometer, MODIS）传感器开发的成熟产品，并针对VIIRS进行了适配与优化。气溶胶掩膜可标识烟雾或沙尘的存在，沙尘掩膜与烟雾掩膜则分别用于标识沙尘与烟雾的出现。由于烟雾与沙尘的检出相互独立，单个像元可同时被标记为兼具沙尘与烟雾。该产品还包含地表像元的数据质量信息。请注意，二进制气溶胶、沙尘及烟雾掩膜的数值为无量纲量。
该算法使用了14个不同的光谱波段，波段范围覆盖0.412微米至12微米。其空间分辨率为1千米（km），时间分辨率为每日可实现全球覆盖。
由NESDIS数据开发系统（NESDIS Data Exploitation system, NDE）分发、并可从综合大型阵列管理系统（Comprehensive Large-Array Stewardship System, CLASS）获取的VIIRS气溶胶探测数据，以单份86秒数据粒的形式进行分发，格式为NetCDF-4，且包含配套元数据属性。