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Airborne Lidar Provides More Complete Picture of Atmospheric Gases

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COLOGNE, Germany, July 24, 2019 — Researchers from Deutsches Zentrum für Luft- und Raumfahrt eV (DLR), Germany’s national center for aerospace, energy, and transportation research, have developed a laser-based system for airborne measurement of atmospheric gases. The distribution of these gases in the troposphere, the lowest layer of Earth’s atmosphere and where weather takes place, plays a central role in Earth’s climate. 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...Read full article

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    Published: July 2019
    Glossary
    lidar
    Lidar, short for light detection and ranging, is a remote sensing technology that uses laser light to measure distances and generate precise, three-dimensional information about the shape and characteristics of objects and surfaces. Lidar systems typically consist of a laser scanner, a GPS receiver, and an inertial measurement unit (IMU), all integrated into a single system. Here is how lidar works: Laser emission: A laser emits laser pulses, often in the form of rapid and repetitive laser...
    differential absorption lidar
    A lidar (light detection and ranging) technique used in pollution monitoring. Two light beams are emitted simultaneously, one at a wavelength that will be absorbed by the target particles, and the second at a nearby wavelength that will not. The measurement of the light scattered by both beams yields information about the range and concentration of the pollutant.
    Research & TechnologyEuropeDeutsches Zentrum für Luft- und Raumfahrt e.V.ImagingLaserslidardifferential absorption lidarOpticsSensors & DetectorsTest & Measurementenvironmentclimate changeclimate modeling

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