Published: 30. May 2016 by: Trond Abrahamsen

First NLC of 2016

MP_NLC_single_20160526_VH_S0_09

The first plot of NLC in 2016

The Alomar lidar observatory measured their first NLC of 2016.

Noctilucent clouds, or NLC, are clouds composed of tiny crystals of water ice and they float at about 80 kilometers altitude. When the light from the sun hits them they glow in a blueish color. NLC occurs mostly around the polar regions. Alomar measured the NLC on May 26th, at 16:00 UTC. The RMR* lidar system which detected the clouds was operated by staff engineer Ingrid Hansen.

Wikipedia has an impressive gallery of NLC photographs here.

The Alomar Observatory is host to several ground based scientifc instrumentation covering the Arctic atmosphere.

* = The abbreviation RMR refers to the atmospheric scattering mechanisms used for the signal detection, which are Rayleigh, Mie, and Raman scattering.