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    Airborne Lidar Provides More Complete Picture of Atmospheric Gases

    Article obtained from Photonics RSS Feed.

    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 system uses two slightly different UV wavelengths to measure each gas. Measuring the ratio of the UV signals returning from the atmosphere allows…

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    Jul, 24 2019 |

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