RESEARCH ASSOCIATES: Dr. Mario Lavorato
Dr. Javier Fochesatto
Ing. Juan C. Dworniczak
Ing. Andrea Pazmiño
Ing. Pablo Ristori
Lic. Elian Wolfram
Ing. Lidia Otero

MAILING ADDRESS: CEILAP (CITEFA - CONICET)
Zufriategui 4380
B1603ALO Villa Martelli
Prov. Buenos Aires
Argentine

TELEPHONE NUMBER: 54 11 4709 8217
FAX NUMBER: 54 11 4709 8217 or 54 11 4709 3210

E-MAIL ADDRESS: quel@citefa.gov.ar

WEB SITE: http://www.citefa.gov.ar/paginas/laser.htm

DATE: 18 september 2001

LIDAR LOCATION (CITY, COUNTRY, LAT., LONG.): Buenos Aires, Argentine,
34° 33' S, 58° 30' W

SITE ELEVATION: 20 m

PARAMETER(S) OR CONSTITUENT(S) MEASURED:
Ozone profiles, 308 (excimer 300 mJ, 100 Hz) and 355 nm (Nd:YAG, 300 mJ, 10 Hz) backscattering radiation

Cirrus, aerosols and ABL with 532 nm. 10 Hz. 600 mJ per pulse

RESEARCH OBJECTIVES AND SPONSOR:
· Analysis of the ozone evolution at mid-latitudes
· Studies of the influence of Antarctic ozone depletion over the Argentinean regions
· Correlation between ozone and UV-B radiation
· Satellites-ground based instruments comparisons
· Validation of different chemical-dynamical models results
· Cirrus and aerosols profiles
· Study of ABL.

Subsides of differents argentines institutions for research and development:
CONICET, ANPCYT, SECYT
Collaborations with Université Pierre et Marie Curie and with Ecole Polytechnique, París France. (Institut Pierre Simon Laplace).
MEASUREMENT TECHNIQUE:1) DIfferential Absorption Lidar system (DIAL)
2) Retrodiffusion Lidar
MEASUREMENT RANGE: 20 km - 50 km
0-35 km.
VERTICAL RESOLUTION: Acquisition system 150 - 300 m
20 - 35 km -> 500 - 1200 m
35 - 50 km -> 1200 - 6500 m

FREQ. OF MEASUREMENT (TYPICALLY): 1-2 per week

MEASUREMENT TIMES (TYPICALLY): 5 hours

LASER TYPE AND WAVELENGTH (s): Lambda Physik LSX 210i excimer laser
@308nm
Continuum-Surelite III Nd:YAG laser
@355nm (third harmonic)

LASER ENERGY/PULSE: 300 mJ @308nm (maximum)
225 mJ @355nm (maximum)

PULSE REPETITION RATE: 1 - 100 Hz @308nm
1 - 10 Hz @355nm

RECEIVER SIZE AND CONFIGURATION: Newtonian telescope of 50 cm diameter

DETECTORS USED: Thorn Emi 9214QB photomultipliers

SIGNAL PROCESSING: photoncounting

ANALOG-T0-DIGITAL CONVERTER: not yet

COMPUTER: PC - Intel based

PLATFORM (if applicable): OPTECH, model FDC-700M fast dual-channel board - DOS

PUBLICATIONS (5 recent and/or significant):
"Sistema DIAL para medición del perfil de ozono estratosférico."
A. F. Pazmiño, M. B. Lavorato, G. J. Fochesatto, P. R. Ristori, P. A. Cesarano, E. J. Quel, S. Godin, G. Mégie.
Annals AFA 1999, vol. 11, 338-341, 1999.

"Study of the influence of the Antarctic ozone depletion over Ushuaia."
A. F. Pazmiño, Godin S., Bekki S., Lavorato M. B., Quel E. J., Mégie G.
Quadrennial Ozone Symposium, Sapporo, Hokkaido, Japan, July 2000.
Proceeding of the Quadrennial Ozone Symposium, 121-122, 2000.

"DIAL system for measurements of stratospheric ozone at Buenos Aires (34° 33' S, 58° 30' W)."
A. F. Pazmiño, M. B. Lavorato, G. J. Fochesatto, P. R. Ristori, P. A. Cesarano, M. L. Castellón, E. J. Quel, S. Godin, J. Porteneuve, G. Mégie.
20th ILRC (International Laser Radar Conference), Vichy, France, July, 2000.
Selected papers presented at the 20th International Laser Radar Conference (ILRC).

"Study of the influence of the Antarctic ozone depletion over Marambio."
A. Pazmiño, Godin S., Bekki S., Lavorato M. , Ginzburg M, Quel E. J., Mégie G.
Proceedings of SPARC 2000, SPARC CD N° 1, 2000.

"Ozone profiles and its influence on solar UVB irradiance incident over Buenos Aires."
Piacentini R. D., Crino E., Cede A., Lavorato M. B., Pazmiño A. F., Quel E. J., Ristori P. R., Wolfram E., Godin S., Mégie G.
Proceedings of SPARC 2000, SPARC CD N° 1, 2000.