LIDAR RESEARCHER:
Dr Gilberto Javier Fochesatto
RESEARCH ASSOCIATES: Pablo Ristori MS from Favaloro
University and PhD student and Lidia Otero PhD student. Undergraduates
training students from Electrical Engineering and Physics.
Scientific Collaboration with Dr Pierre H. Flamant from Laboratoire
de Météorologie Dynamique du CNRS, Ecole Polytechnique,
France.
MAILING ADDRESS: Zufriategui 4380. (1603) Villa
Martelli. Buenos Aires. Argentine.
TELEPHONE NUMBER: 54 11 4709 0131/0231. Int :
1206
FAX NUMBER: 54 11 4709 3210 / 9438
E-MAIL ADDRESS: foch@citefa.gov.ar
WEB SITE: http://www.citefa.gov.ar
DATE: August 28, 2001.
LIDAR LOCATION : Villa Martelli, Buenos Aires.
Argentine.(-34.5, 58,5 )
SITE ELEVATION: 20m ASL
PARAMETER(S) OR CONSTITUENT(S) MEASURED: Backscattering
profiles @1064nm, @532nm and @355nm. Atmospheric Boundary Layer
Height and Entrainment Zone Thickness, Optical depths.
RESEARCH OBJECTIVES AND SPONSOR: Atmospheric Boundary
Layer Dynamic problems related to the Air Quality. ABL dynamics
on micro scale process, meso scale influences of Rio de la Plata
Basin and large scale ENSO impacts to long term ABL evolution.
ABL Dynamics and Convection problems related to Tropospheric UV
Radiation Budget.
Sponsor CITEFA - CONICET, SECYT Secretaría de Ciencia y
Técnica de la Argentina.
MEASUREMENT TECHNIQUE: Backscatter Lidar in vertical profiles
MEASUREMENT RANGE: 300m to 10km.
VERTICAL RESOLUTION: 15m
FREQ. OF MEASUREMENT (TYPICALLY): Twice a week
and different intensive observations periods coordinate with Air
Quality programs.
MEASUREMENT TIMES (TYPICALLY): Diurnal Cycle .
60sec time resolution minimum.
LASER TYPE AND WAVELENGTH (s): Three Wavelength
Solid State Nd:YAG @1064nm, 532nm and 355nm.
LASER ENERGY/PULSE: 650mJ @1064nm
PULSE REPETITION RATE: 20Hz
RECEIVER SIZE AND CONFIGURATION: Two telescope
in bi-static configuration with reception composed by a Dual Chain
Cassegrain Telescope with f/12 each one. One telescope is fiber
coupled to the spectrometric box separator @532nm and 355nm and
the other one is for detection in 1064nm backscatter wavelength.
DETECTORS USED: Avalanche Photodiode @1064nm and
Hamamatshu Photomultipliers @532nm and 355nm.
SIGNAL PROCESSING: 4 channel digitizing oscilloscope
100MHz bandwidth at 2GS/sec.
ANALOG-T0-DIGITAL CONVERTER: 12 bits
COMPUTER: Pentium II 400MHz
PLATFORM (if applicable): Windows 98.
PUBLICATIONS (5 recent and/or significant):
"Observation and Modeling of Atmospheric Boundary Layer Nocturnal-Diurnal
Transition during the ESQUIF Experiment". J. Fochesatto,
P. Drobinski, C. Flamant, D. Guédalia, C. Sarrat, P. Flamant,
J. Pelon. "Advances in Laser Remote Sensing".
Edition de l'Ecole Polytechnique. Février 2001.
"Diurnal Cycle of the Atmospheric Boundary
Layer During the ESQUIF experiments : Dynamics and Exchange processes".
J. Fochesatto, P. Drobinski, C. Flamant, , P. H. Flamant D. Guédalia..
Proceedings of EGS, European Geophysical Society XXV General Assembly
, Nice France April 2000.
"Evidence of Dynamical coupling between the
residual layer and the developing
convective boundary layer". J. Fochesatto, Philippe Drobinski,
Cyrille Flamant, Danial Guedalia, Claire Sarrat, Pierre Flamant
and Jacques Pelon. Boundary-Layer Meteorology 99: 451-464, 2001.
"South America ENSO Teleconnection Coherence
Patterns and their impacts to tropospheric parameters over Buenos
Aires" P. Ristori, J. Fochesatto, E. Quel , P. H. Flamant.
Proceedings of SPARC, Mar del Plata, Setiembre 2000.
"DIAL System for measurements of Stratospheric
Ozone at Buenos Aires.(340 33', 580 30')" A. Pazmiño,
M. Lavorato, J. Fochesatto, P. Ristori, P. Cesarano, M. Castellón,
E. Quel, S. Godin, J. Portenueve, G. Megie. "Advances in
Laser Remote Sensing".
Edition de l'Ecole Polytechnique. Février 2001.
COMMENTS:
Lidar instrumental site is composed by :
Stratospheric Ozone Lidar system (355nm and 308nm) and different
ground based column instruments such as: Sun photometer from Aeronet
Network, Pyranometer, Pyrgeometer, UV column radiation measurement
and surface meteorological station.
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