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Goal: Demonstrate the first satellite-compatible (separated detector and receiver) active greenhouse gas atmospheric retrieval measurements over a 35-km path in the free troposphere. This will demonstrate that the technique will work for two satellites or satellite-to-ground measurements. Gap: Active greenhouse gas sensing from space. Active remote sensing measurements using frequency combs has the potential to allow much more accurate trace gas retrievals without the drawbacks of classical Lidar systems (just sampling one line). Innovation: Separated (transmitter/receiver) dual frequency comb atmospheric spectroscopy Approach: Demonstrate high precision dual-comb spectroscopic column density measurements of CO2, CH4, H2O, temperature and line-of-sight winds over 35 km path from Mauna Loa to Mauna Kea. Verify dual-comb CO2 retrievals against primary Mauna Loa CO2 ground observatory.
Demonstrate key capabilities for future satellite-based dual-comb spectroscopy. Verify dual-comb CO2 retrievals against primary Mauna Loa CO2 ground observatory
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