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A Novel Lidar Ceilometer: Design, Implementation and by Joshua D. Vande Hey

By Joshua D. Vande Hey

In this thesis, a brand new lidar (light detection and varying) ceilometer able to tracking cloud base and delicate to boundary layer aerosols is brought. the foremost to this novelty lies in its divided-lens layout that addresses a classical lidar challenge of balancing transmitter-receiver overlap and signal-to-noise ratio, besides a style for characterizing overlap within the laboratory. better sensitivity within the near-range of the tool is completed with out compromising signal-to-noise in a layout that's basic to fabricate for vast deployment. The device, its optical characterization, and its functionality within the box are defined. The prototype software defined the following has given that shaped the foundation of a advertisement sensor for tracking clouds and aerosols.

High-resolution, non-stop observations of clouds and aerosols are had to decrease the massive uncertainties in our present figuring out in their impact on weather which have been highlighted by way of the overseas Panel on weather switch. And as foreign health and wellbeing firms point out turning out to be public wellbeing and fitness threats over the arrival a long time because of negative air caliber, vast aerosol tracking is needed to evaluate own publicity to and the future health affects of anthropogenic particulates. Ground-based optical distant sensing measurements made by way of well-characterized tools, equivalent to that defined in those pages, are severe to this.

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Additional info for A Novel Lidar Ceilometer: Design, Implementation and Characterisation (Springer Theses)

Sample text

These instruments have been used for research, for example, to study cloud base height [63] and to study boundary layer aerosols [64, 65]. More details of the CL31 are given in Chap. 2. Vaisala has offered a number of “research-grade” ceilometers at various times. One of these was a biaxial instrument called the LD-40, which had used a wavelength of 855 nm and had a specified range of 13,000 m [50]. 25 km [67]. A CT75k located at Chilbolton Observatory has been calibrated [68] and was used in this study as a reference for prototype measurements as described in Chap.

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Y. Matrosov, T. Uttal, J. Snider, R. Kropfli, Estimation of ice cloud parameters from glroundbased infrared radiometer and radar measurements. J. Geophys. Res. 97(D11), 11567–11574 (1992) 7. J. Liljegren, E. Clothiaux, S. Kato, B. Lesht, Initial evaluation of profiles of temperature, water vapor and cloud liquid water from a new microwave profiling radiometer, in Proceedings of 5th American Meteorological Society (AMS) Symposium on Integrated Observing Systems, Albuquerque, NM, 14–19 Jan 2001 8.

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