Fusion of Landsat 8 Operational Land Imager and Geostationary Ocean Color Imager for hourly monitoring surface morphology of lake ice with high resolution in Chagan Lake of Northeast China

Abstract. The surface morphology of lake ice remarkably changes under the combined influence thermal and mechanical forces. However, research on its interaction with climate is scarce. A large-scale linear structure has repeatedly appeared satellite images Chagan Lake in recent years. Geostationary Ocean Color Imager (GOCI), a 1 h revisit, Landsat 8 Operational Land (OLI), spatial resolution 30 m, provide possibility for study hourly structure. We merged GOCI images, using an Enhanced Spatial Temporal Adaptive Reflectance Fusion Model (ESTARFM), extracted lengths angles monitored during cold season from 2018 to 2019. average length completely frozen period was 21 141.57 ± 68.36 m. azimuth angle 335.48 0.23∘, nearly perpendicular domain wind winter. Through two field investigations seasons, we verified as being fractures ridges. evolution closely associated air temperature, wind, shoreline geometry.