VIIRS/NPP Land Surface Temperature and Emissivity 6-Min L2 Swath 375m NRT

The Near Real Time (NRT) VIIRS Land Surface Temperature and Emissivity 6-Min L2 Swath 375m product with short-name VNP21IMG_NRT, is the same product but at 375m spatial resolution. The VNP21 algorithm is based on the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Temperature Emissivity Separation (TES) algorithm. This algorithm uses full radiative transfer simulations for the atmospheric correction, and an emissivity model based on the variability in the surface radiance data to dynamically retrieve both LST and spectral emissivity at native pixel resolution. Additional details regarding the methodology are available in the Algorithm Theoretical Basis Document (ATBD) at: https://viirsland.gsfc.nasa.gov/PDF/VNP21_LSTE_ATBD_v2.1.pdf and user guide at: https://viirsland.gsfc.nasa.gov/PDF/VNP21_LSTE_user_guide.pdf近实时（NRT）VIIRS陆地表面温度和发射率6分钟L2扫描375米产品，简称VNP21IMG_NRT，与375米空间分辨率的相同产品。VNP21算法基于先进的机载热辐射和反射辐射计（ASTER）温度发射率分离（TES）算法。该算法采用完整的辐射传输模拟进行大气校正，并基于表面辐射亮度数据的变异性构建发射率模型，以动态获取原生像素分辨率的陆地表面温度和光谱发射率。有关该方法论的详细信息，可在以下Algorithm Theoretical Basis Document (ATBD)文档中查阅： https://viirsland.gsfc.nasa.gov/PDF/VNP21_LSTE_ATBD_v2.1.pdf 以及用户指南： https://viirsland.gsfc.nasa.gov/PDF/VNP21_LSTE_user_guide.pdf

搜集汇总

背景与挑战

背景概述

该数据集是VIIRS/NPP提供的近实时（NRT）地表温度和发射率产品，空间分辨率为375米，每6分钟生成L2级条带数据。它基于ASTER TES算法，通过全辐射传输模拟和动态反演方法，同时获取地表温度（LST）和光谱发射率，适用于高精度地表热环境监测。