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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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