Multi-fidelity Gaussian Process Emulation for Atmospheric Radiative Transfer Models
- 1. University of Valencia
- 2. Universidad Rey Juan Carlos
Description
This repository contains several datasets of spectral atmospheric transfer functions (i.e. path radiance, transmittances, spherical albedo) simulated with MODTRAN6 atmospheric radiative transfer model. The simulations are stored in hdf5 files using the Atmospheric Look-up table Generator (ALG) toolbox (https://doi.org/10.5194/gmd-13-1945-2020). Each dataset has an associated .xml file that includes the configuration of ALG/MODTRAN6 executions. All datasets include the input atmospheric/geometric variables that are summarized in the following table. Each dataset file has a random distribution (based on latin hypercube sampling) these input variables with varying number of points (e.g. train500.h5 contains 500 samples). The reference dataset contains 10000 samples and was used as reference for evaluating Gaussian Processes emulators.
| Input Variables | Units | Min | Max |
|---|---|---|---|
| O3 column concentration | atm-cm | 0.25 | 0.45 |
| Columnar Water Vapor | g/cm2 | 0.2 | 4 |
| Aerosol Optical Thickness | - | 0.04 | 0.6 |
| Asymmetry parameter | - | 0.5 | 0.85 |
| Angstrom exponent | - | 0.1 | 2 |
| Single Scattering Albedo | - | 0.8 | 1 |
| Surface elevation | km | 0 | 2.5 |
| Solar Zenith Angle | deg | 0 | 70 |
| Relative Zenith Angle | deg | 0 | 180 |
Files
reference.xml
Files
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Additional details
Funding
- European Commission
- iMIRACLI - innovative MachIne leaRning to constrain Aerosol-cloud CLimate Impacts (iMIRACLI) 860100
- European Commission
- SENTIFLEX - Fluorescence-based photosynthesis estimates for vegetation productivity monitoring from space 755617
- European Commission
- USMILE - Understanding and Modelling the Earth System with Machine Learning 855187
References
- J. Vicent et al.: Comparative analysis of atmospheric radiative transfer models using the Atmospheric Look-up table Generator (ALG) toolbox (version 2.0), Geosci. Model Dev., 13, 1945–1957, https://doi.org/10.5194/gmd-13-1945-2020, 2020.
- J. Vicent et al.: Multi-fidelity Gaussian Process Emulation for Atmospheric Radiative Transfer Models, IEEE Trans. on Geosci. and Rem. Sens., 2023 (in review)