We see that the SNR can be improved by accumulating the original signal of the laser ceilometer. The SNR of the original signal is gradually less than 10 (this value is the minimum requirement for the SNR that can be used to retrieve aerosolbackscatter coefficients [4,17]) at 1.5 km, but the available height of it can reach 3-4 km after accumulating for 30 min.
Then, the extinction coefficient deduced from the surface meteorological visibility was compared with the near-surface extinction coefficient of the CYY-2B, CL51 laser ceilometer, and the MPL.
Soderholm, "Laser ceilometer measurements of Australian dust storm highlight need for reassessment of atmospheric dust plume loads," Geophysical Research Letters, vol.
Tenders are invited for This Competition Relates To The Purchase Of Seven (7) Laser Ceilometers
To Meet Aviation Modernisation And Automation Project (Amap) Requirements, With The Optional Purchase (At Met ireann~S Sole Discretion) Of An Additional Seven (7) Laser Ceilometers
To Meet Synoptic Aws Requirements.