福衛衛星影像應用加值DataCube與多元環境參數之建構-多元衛星光學影像在高時空解析融合軟體應用之建構-以空氣污染近即時之監測為例(總計畫及子計畫三)

With the advantage of wide coverage in regional or global scales, remote sensing imaging from satellites is widely applied to environmental monitoring, such as land cover analysis, weather analysis, air quality monitoring and crop phenology monitoring. For environmental monitoring, the polar-orbiting satellite observations equipped with high spatial resolution are usually employed. The major limitation of orbital observations could be the low revisit cycle which insufficient to examine the diurnal variation. On the other hand, geostationary satellites with high temporal resolution could be satisfied for time-critical applications. Himawari-8, the second generation Asian geostationary satellite launched in 2014, offering observations every 10-minutes, has been widely applied to investigations ofshort-term phenomena in dynamic procedures even with its low spatial resolution. In addition to a high temporal resolution, Himawari-8 has a new payload (Advanced Himawari Imager, AHI) with 16 optical bands for providing the detailed information on both terrestrial and atmospheric parameters. The similarity of the visible and thermal infrared bands between Landsat-8 OLI (Operational Land Imager), Sentinel, Formosat and Himawari-8 AHI sensors offers a high potential to fuse the high-spatial-resolution (30 m) with the ultra-high temporal resolution (10 minute windows) imagery for the monitoring of short-term events. With the improving image fusion technology (Spatial and Temporal Adaptive Reflectance Fusion Model-Aerosol Property, STARFM-AP), the dynamic monitoring of environment on high spatiotemporal observations can be implemented based on the high spatiotemporal fused imagery. The high spatiotemporal imagery will be provided on the data cube platform for publics The preliminary application inretrieving PM2.5 for air pollution monitoring in near-real time will be examined. The results could offer the reference for intensifying the performance of 3rd national project of space program.