Cloud-Base Height Measurements with a Single-Pulse Erbium-Glass Laser Ceilometer

Gaumet, J. L.; Heinrich, Jörg; Cluzeau, Michel; Pierrard, P.; Prieur, Jerome

doi:10.1175/1520-0426(1998)015<0037:cbhmwa>2.0.co;2

Cited by 27 publications

(13 citation statements)

References 11 publications

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“…This cloud base height definition assumes that the signal is small below cloud, rises to a maximum at the start of the cloud, and decreases thereafter due to attenuation. Thus, most techniques used for cloud base height detection search for zero crossings in the derivative of the returned signal [Pal et al 1992, Campbell et al 1998, Gaumet et al 1998]. Other methods look for a "threshold" value of signal shift from the background [Platt et al 1994] or construct lidar clear-sky power return profiles from archived data to test for the presence of clouds [Clothiaux et al 1998].…”

Section: Cloud Base Detectionmentioning

confidence: 99%

Raman LIDAR detection of cloud base

Demoz

Starr

Whiteman

et al. 2000

Geophysical Research Letters

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Abstract. Advantages introduced by Raman lidar systems for cloud base determination during precipitating periods are explored using two case studies of light rain and virga conditions. A combination of the Raman lidar derived profiles of water vapor mixing ratio and aerosol scattering ratio, together with the Raman scattered signals from liquid drops, can minimize or even eliminate some of the problems associated with cloud boundary detection using elastic backscatter lidars.

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Section: Cloud Base Detectionmentioning

confidence: 99%

Raman LIDAR detection of cloud base

Demoz

Starr

Whiteman

et al. 2000

Geophysical Research Letters

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“…(14) and (15), and simulation of the laser/telescope overlap function in terms of Eqs. The method uses a convenient analytical reformulation of the range-dependent SNR in a backscatter lidar, Eqs.…”

Section: Discussionmentioning

confidence: 99%

“…14), some experimental prototypes have been designed 15 and even some commercial models 16 based on Erbium-doped glass laser. 14), some experimental prototypes have been designed 15 and even some commercial models 16 based on Erbium-doped glass laser.…”

Section: Emission Wavelength λmentioning

confidence: 99%

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Parameter design of a biaxial lidar ceilometer

Gregorio¹,

Rocadenbosch

Tiana-Alsina

et al. 2012

J. Appl. Remote Sens

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This paper presents parameter design methodology and related optomechanical engineering of a 905-nm diode-laser biaxial, eye-safe lidar ceilometer prototype for cloud-height monitoring. Starting with a brief review of the state-of-the-art ceilometer technology, acceptable parameter ranges are identified for the key system parts. Parameter tuning is achieved by imposing goal criteria on the simulated signal-to-noise ratio and laser-telescope overlap factor. The system is based on a low-cost pulsed semiconductor laser, low-cost Fresnel-lens telescope, a low-noise-equivalent power avalanche-photodiode optoelectronic receiver, and collimating/focusing adjustable parts. Finally, preliminary test measurements are presented.Peer ReviewedPostprint (published version

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“…Presently, the ground-based instruments used for the measurement of the cloud base height or velocity include radiosonde, cloud radars [3], ceilometers [4], lidars [5], and stereographic cameras [6]. Radiosondes provide accurate cloud base heights, especially for low clouds, but are only released every 12 h or more.…”

Section: Introductionmentioning

confidence: 99%

Measurement of Cloud Velocity and Altitude Using Lidar's Range Detection and Digital Image Correlation

Park

Baik

Park

et al. 2014

Journal of the Optical Society of Korea

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Clouds play an important role in climate change, in the prediction of local weather, and also in aviation safety when instrument assisted flying is unavailable. Presently, various ground-based instruments used for the measurements of the cloud base height or velocity. Lidar techniques are powerful and have many applications in climate studies, including the clouds' temperature measurement, the aerosol particle properties, etc. Otherwise, it is very circumscribed in cloud velocity measurements because there is no Doppler effect if the clouds move in the perpendicular direction to the laser beam path of Doppler lidar.In this paper, we present a method for the measurement of cloud velocity using lidar's range detection and DIC (Digital Image Correlation) system to overcome the disadvantage of Doppler lidar. The lidar system acquires the distance to the cloud, and the cloud images are tracked using the developed fast correlation algorithm of DIC. We acquired the velocities of clouds using the calculated distance and DIC algorithm. The measurement values had a linear distribution.

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Cloud-Base Height Measurements with a Single-Pulse Erbium-Glass Laser Ceilometer

Cited by 27 publications

References 11 publications

Raman LIDAR detection of cloud base

Raman LIDAR detection of cloud base

Parameter design of a biaxial lidar ceilometer

Measurement of Cloud Velocity and Altitude Using Lidar's Range Detection and Digital Image Correlation

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