Der grüne Laserstrahl des IfT ist nachts zu sehen. Das von den Leipziger Troposphärenforschern entwickelte LIDAR-System namens PollyXT sendet dazu Laserimpulse mit Wellenlängen von 355, 532 und 1064 Nanometern aus, die von in der Atmosphäre schwebenden Partikeln reflektiert werden. Neben PollyXT betreiben die TROPOS-Forscher noch zwei weitere Laser.
Tilo Arnhold / IfT
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