Airborne Lidar Provides More Complete Picture of Atmospheric Gases
The new lidar system uses laser light to measure the vertical structure of ozone and water vapor simultaneously. In an approach called differential absorption lidar (DIAL), the system uses two slightly different UV wavelengths to measure each gas. Measuring the ratio of the UV signals returning from the atmosphere allows calculation of a detailed gas profile. The gas profiles created using DLR¡¯s lidar system exhibited a vertical resolution of around 250 m and a horizontal resolution of about 10 km below the aircraft¡¯s
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