Developments in lidar technology aim to improve measurements of water vapor and methane in the atmosphere, suggesting advancements for future missions.
NASA Langley Research Center has developed the High-Altitude Lidar Observatory (HALO), a water vapor and methane Differential Absorption Lidar (DIAL) and High Spectral Resolution Lidar (HSRL) system to address the observational needs of weather, climate, carbon cycle, and atmospheric composition communities, but also serve as a technology testbed to mature and demonstrate requisite technologies need to enable future space-based water vapor and methane DIAL missions. We will present on the HALO airborne architecture, enabling technologies, and representative water vapor and methane measurements. We will also present on technologies adapted from HALO to enable a cross-cutting water vapor and methane DIAL space-based mission being advanced through the Atmospheric Boundary Layer Lidar Pathfinder (ABLE) project.
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Nehrir et al. (2026) studied this question.
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