Understand and mitigate impacts of 3D clouds on UV-VIS NO2 trace gas retrievals by AI exploration of synthetic and real data (MIT3D)
Prime company: NILU – NORWEGIAN INSTITUTE FOR AIR RESEARCH (NO)Operational retrievals of trace gas column amounts assume (near) cloud free conditions. However, the large pixel size of the satellite instruments (for example the TROPOspheric Monitoring Instrument on Sentinel 5P, TROPOMI-S5P, is 5.5 km by 3.5 km at nadir) imply that pixels may be contaminated by sub-pixel sized cloud(s). Furthermore, clouds in neighbour pixels may …