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A Physics-aware Data-driven Surrogate Approach for Fast Atmospheric Radiative Transfer Inversion by Sgattoni, Cristina; Sgheri, Luca; Chung, Matthias is a scholarly article available to read on EtoBox.

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FORUM (Far-infrared Outgoing Radiation Understanding and Monitoring) was selected in 2019 as the ninth Earth Explorer mission by the European Space Agency (ESA). Its primary objective is to collect interferometric measurements in the Far-InfraRed (FIR) spectral range, which accounts for 50\% of Earth's outgoing longwave radiation emitted into space, and will be observed from space for the first time. Accurate measurements of the FIR at the top of the atmosphere are crucial for improving climate models. Current instruments are insufficient, necessitating the development of advanced computational techniques. To ensure the quality of the mission data, an End-to-End Simulator (E2ES) was developed to simulate the measurement process and evaluate the effects of instrument characteristics and environmental factors. The core challenge of the mission is solving the retrieval problem, which involves estimating atmospheric properties from the radiance spectra observed by the satellite. This problem is ill-posed and regularization techniques are necessary. In this work, we present a novel and fast data-driven approach to approximate the inverse mapping. In the first phase, we generate an initi

Author

Sgattoni, Cristina; Sgheri, Luca; Chung, Matthias

Published

2024

Language

EN