Mr. Ovidiu-Gelu Tudose Profile

Ovidiu-Gelu Tudose

at SC EnviroScopY SRL

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Publications (1)

Proceedings Article | 26 October 2011 Paper

ESYRO Lidar system developments for troposphere monitoring of aerosols and clouds properties

Ovidiu-Gelu Tudose, Marius-Mihai Cazacu, Adrian Timofte, Ioan Balin

Proceedings Volume 8177, 817716 (2011) https://doi.org/10.1117/12.910640

KEYWORDS: LIDAR, Aerosols, Clouds, Atmospheric particles, Backscatter, Spatial resolution, Troposphere, Raman spectroscopy, Atmospheric sensing, Nd:YAG lasers

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Aiming the remote sensing low cost, up-gradable and modular tools development for monitoring relevant atmospheric parameters and processes in the whole troposphere (from 250 m to 12-15 Km altitude), a new configuration LIDAR system, i.e. ^ESYROLIDAR, dedicated for tropospheric aerosols and clouds high temporal (minutes) and spatial resolutions (meters) monitoring have been developed and tested. This extremely up-gradable configuration of ^ESYROLIDAR is based on: a multi -wavelengths (1064, 532 and 355 nm) powerful (200, 100 and 45 mJ/pulse) and relatively high variable repetition rate (up to 30 Hz) Nd:YAG pulsed laser, a large Newtonian telescope (40 cm diameter of collector mirror) and a new opto-mechanics detection module built in an original "eye geometry" consideration. The firsts tests and measurements were performed at the site of Science and Technology Park TehnopolIS (Iasi city located on the northeastern region of Romania), using a basic configuration with a 532 nm elastic detection with depolarization study module. Different types of clouds up to 12 km in daylight are highlighted from this first measurement. Measurements and tests made in other recent campaigns for 355 nm elastic channel are also presented. The ability of the new LIDAR system to determine the height of planetary boundary layer (PBL) determined from the LIDAR signals, as well as the aerosols load and optical parameters (extinction and backscatter) and the evaluation of atmospheric dynamics at high spatial-temporal resolutions are clearly confirmed. This paper presents the ^ESYROLIDAR basic configuration with its two VIS elastic channels (532 nm, parallel and cross). The first measurements made with the UV (355 nm - interchangeable channel) and VIS (532 nm) elastic channels are illustrated by typical examples. The quality of ^ESYROLIDAR atmospheric profiles is based on advantages of low divergence (0.15 mrad), relatively high repetition rate (30 Hz) and the coaxial UV-VIS-NIR .The present challenges are first a new robust more automatized alignment system and second the integration of more Raman detection channels i.e. Raman H₂O water vapor at 407 nm. This system is the base of the ROmanian LIdar NETwork (ROLINET).

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