Imager and sounder data fusion to generate sounder retrieval products at an improved spatial and temporal resolution Journal of Applied Remote Sensing

The Visible Infrared Imaging Radiometer Suite (VIIRS) imaging instrument on the polar-orbiting Suomi-National Polar-orbiting Partnership and National Oceanic and Atmospheric Administration-20 satellite platforms has infrared window bands but no carbon dioxide and water vapor absorption bands; the latter are essential for accurately deriving atmospheric variables (such as temperature and moisture profiles, cloud properties). An approach for fusing a high spatial resolution imager (e.g., VIIRS) and a high spectral resolution sounder [e.g., Cross-track Infrared Sounder (CrIS)] offers the opportunity to construct new spectral band radiances (radiance fusion) as well as sounder retrieval products (product fusion) at high spatial resolution. Furthermore, temperature and humidity profiles can also be provided at a high temporal resolution when geostationary imager [Advanced Baseline Imager (ABI)] data are used in combination with polar orbiting sounder (CrIS) data in a fusion approach. Promising results from VIIRS/CrIS and ABI/CrIS fusion are presented Grant no. NA15NES4320001

搭载于极轨Suomi国家极轨伙伴卫星与美国国家海洋和大气管理局-20卫星平台的可见光红外成像辐射计套件（Visible Infrared Imaging Radiometer Suite，VIIRS），仅配备红外窗口波段，未设置二氧化碳与水汽吸收波段；而此类吸收波段是精准反演大气变量（如温度廓线、湿度廓线与云特性）的核心要素。将高空间分辨率成像仪（如VIIRS）与高光谱分辨率探测仪[如跨轨红外探测仪（Cross-track Infrared Sounder，CrIS）]进行融合的技术路径，可在高空间分辨率维度下生成新型光谱波段辐射量（辐射融合）以及探测仪反演产品（产品融合）。此外，若将地球静止轨道成像仪[先进基线成像仪（Advanced Baseline Imager，ABI）]数据与极轨探测仪（CrIS）数据通过融合方法结合，还可获得高时间分辨率的温湿度廓线产品。本研究展示了VIIRS/CrIS与ABI/CrIS融合方法的优异实验结果，资助编号为NA15NES4320001