Submitted:
28 February 2026
Posted:
02 March 2026
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Abstract
A single channel Rayleigh Density Temperature Lidar (RDTL) with a receiver telescope of 85 cm diameter was installed at Poker Flat Research Range (PFRR), Chatanika, Alaska (65°N, 213°E) in November 1997. To increase the incoming signal count the receiver diameter was increased to 1 m in 2016. In order to prevent damage of the photomultiplier tube due to the high incoming signal counts, the RDTL receiver system was modified to a three-channel system. However, temperature calculations from the individual channel retrieval showed a mismatch between them and this created a problem in combining the signal counts from the three channels into one to achieve higher confidence in the data. In this study, a correction procedure has been developed and deployed to the signal counting statistics of the RDTL to eliminate instrumental biases and get 100% agreement in temperatures between the three channels.
Keywords:
ayleigh density and temperature lidar
; instrumental bias
; pulse pile-up
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