Atmospheric researcher & a laser radar (lidar)

Atmospheric researcher & a laser radar (lidar)

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Caption: Atmospheric laser radar. Scientist Dan Walsh & an ultraviolet laser radar (lidar) that measures atmospheric aerosols, ozone levels & temperatures. The scientist is recording the oper- ating parameters of the lidar, which projects 2 vertical beams at different wavelengths. Radiation scattered back is analysed to determine the strat- osphere's composition at altitudes of 15-75 kilo- metres (km). Stratospheric aerosols come from vol- canic eruptions, & are mainly comprised of sulph- uric acid & water. Ozone gas, mainly found above 19km, blocks harmful ultraviolet rays from the Sun. Photographed at Mauna Loa Observatory on Hawaii.

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Keywords: atmosphere, atmospheric resea, climate, dan, laser radar experiment, lidar, lidar research, mauna loa, ozone layer research equipment, particulate research, radar laser, research, ultraviolet laser, walsh

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