China 2023 hourly seamless near-surface NO2 dataset

This dataset contains the hourly, gapless near-surface NO₂ concentration over China for 2023, with a spatial resolution of 0.05° and temporal resolution of 1 hour. The unit of NO₂ concentration is μg/m³. The dataset was generated based on GEMS satellite observations, and integrated with multi-source auxiliary data including GEOS-CF model simulations, meteorological data, vegetation indices, and nighttime light data. A machine learning method was used to produce the gapless dataset, which is stored in GeoTIFF format.本数据集包含2023年中国区域逐小时无缝隙近地面二氧化氮（NO₂）浓度数据，其空间分辨率为0.05°，时间分辨率为1小时，二氧化氮浓度的单位为微克每立方米（μg/m³）。 该数据集基于GEMS卫星观测数据生成，并融合了包括GEOS-CF模式模拟结果、气象数据、植被指数以及夜间灯光数据在内的多源辅助数据。研究采用机器学习方法构建得到这套无缝隙数据集，其存储格式为GeoTIFF。