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  • Cloud temperature measured using Rotational Raman Lidar

    Insufficient suppression of the elastic-scattering signal in the rotational Raman (RR) detection channels can result in the large error of retrieval particularly when the temperature of thick cloud is measured using a RR lidar. A technique is introduced to obtain two RR channels’ relative transmissions for elastic backscatter signals and thereby correct the influence of residual elastic-signal on the temperature retrieval. The feasibility of this technique is demonstrated by applying to Hampton University (HU) lidar measurements and the retrievals of water-phase and cirrus cloud temperature show good agreement with the radiosonde measurements.