Synergistic MODIS Terra–Aqua observations for aerosol fine-mode fraction retrieval over East Asia (2003–2024)

We employ an improved deep learning model to retrieve 5 km resolution clear-sky aerosol FMF over East Asia (13–55°N, 70–147°E) for 2003–2024 from MODIS Terra and Aqua Level-1B radiance data (MOD02SSH and MYD02SSH) acquired during the morning and afternoon overpasses.本研究采用改进型深度学习模型，针对东亚区域（13°N–55°N，70°E–147°E）2003年至2024年的5千米分辨率晴空气溶胶细模态占比（Fine Mode Fraction, FMF）开展反演，所用数据为搭载于Terra与Aqua卫星的中分辨率成像光谱仪（MODIS）采集的Level-1B级辐射数据（MOD02SSH与MYD02SSH），该类数据获取于上午与下午的卫星过境时段。