Visible Shortwave Infrared (VSWIR) atmospheric correction is key for global terrestrial & aquatic ecosystem studies. Capability need: 2 order of magnitude speedup. 0.1 seconds per iteration enables accurate iterative numerical inversion. Potential applications include: • Atmospheric correction for airborne VSWIR spectrometers (AVIRIS-NG, AVIRIS-C, ACIS, and future instruments). • Orbital VSWIR spectrometers (EMIT, SBG) • Extensible to water column modeling for ocean color, inland water quality, and coastal ecosystem studies (PRISM, CORAL, PACE, EV-S proposals) • Extensible to thermal IR for HyTES and longwave IR imaging spectrometers for Earth and planetary
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