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Elian Wolfram Centro de Investigaciones en Láseres y Aplicaciones (LASER RESEARCH CENTER AND APPLICATIONS ) (CITEDEF-CONICET) Buenos Aires - Argentina.

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Presentation on theme: "Elian Wolfram Centro de Investigaciones en Láseres y Aplicaciones (LASER RESEARCH CENTER AND APPLICATIONS ) (CITEDEF-CONICET) Buenos Aires - Argentina."— Presentation transcript:

1 Elian Wolfram Centro de Investigaciones en Láseres y Aplicaciones (LASER RESEARCH CENTER AND APPLICATIONS ) (CITEDEF-CONICET) Buenos Aires - Argentina

2 Staff of Lidar Division of CEILAP  Dr. Eduardo J. Quel /CITEDEF  Dr. Elian Wolfram /CITEDEF-CONICET  Dra. Lidia Otero /CITEDEF -CONICET  Dr. Pablo Ristori /CITEDEF  Ing. Marcelo Raponi/CITEDEF -PhD Sdt  Ing. Jacobo Salvador/CITEDEF - PhD Std  Ing. Juan Pallota/CITEDEF /PhD Std  Ing. Ezequiel Pawelko /CITEDEF /PhD Std  Geof. Gabriela Nicora/CITEDEF Fellow  Lic. Facundo Orte/ANCYPT Fellow  Tec. Daniela Bulnes/CITEDEF  Est. Carla Repetto/UTN Fellow  Tec. E. Martorella/CITEDEF  Tec. Raúl D´Elía/CONICET  Ing. J. C. Dworniczak/CITEDEF  Ing. Francisco González/CITEDEF  Tec. Osvaldo Vilar/CITEDEF

3 Staff of Lidar Division of CEILAP  Dr. Eduardo J. Quel /CITEDEF  Dr. Elian Wolfram /CITEDEF-CONICET  Dra. Lidia Otero /CITEDEF -CONICET  Dr. Pablo Ristori /CITEDEF  Ing. Marcelo Raponi/CITEDEF -PhD Sdt  Ing. Jacobo Salvador/CITEDEF - PhD Std  Ing. Juan Pallota/CITEDEF /PhD Std  Ing. Ezequiel Pawelko /CITEDEF /PhD Std  Geof. Gabriela Nicora/CITEDEF Fellow  Lic. Facundo Orte/ANCYPT Fellow  Tec. Daniela Bulnes/CITEDEF  Est. Carla Repetto/UTN Fellow  Tec. E. Martorella/CITEDEF  Tec. Raúl D´Elía/CONICET  Ing. J. C. Dworniczak/CITEDEF  Ing. Francisco González/CITEDEF  Tec. Osvaldo Vilar/CITEDEF Peoples involved in Ozone Studies from Argentine SideFrench Partners  Dr. Sophie Godin-Beekman LATMOS/IPSL/CNRS  Dr. Florance Goutail LATMOS/UVSQ/CNRS  Dr. Andrea Pazmiño LATMOS/UVSQ/CNRS  Ing. Jacques Porteneuve (retired)

4 Two Remote Sensing Sites

5 Province of Santa Cruz, Argentine Patagonia. Lat: 51º 36’ S, Lon: 69º 19’ W. Military Air Force Base, Río Gallegos - Fuerza Aérea Argentina (FFAA) Río Gallegos Site (CEILAP-RG)

6 Instrumental Capabilities

7 Altitude= ct/2 Aerosol Mie Scattering Rayleigh Scattering Backscatter radiation Reception (Telescope) Emission (laser) Lidar Signal Altitude Back Scattering signal Principle of LIDAR measurement Ligth Detection And Ranging Our measurements: Clean Night Condition 2-3 hs integration time

8 Quantel 980 Nd-YAG Laser Emitted wavelength1.06  m, 532 nm, 355 nm Emitted energy~40 mJ/pulse (max. 130 Repetition rate 30 Hz (max. 30 Hz) Divergence0.6 mrad Lambda Physik LSX 210i Excimer laser (XeCl) Emitted wavelength 308 nm Emitted energy ~200 mJ/pulse (max. 300 mJ/pulse) Repetition rate 30 Hz (max. 100 Hz) Divergence 0.4 mrad

9 Mechanical Chopper Fiber Optics Entrance Slit

10 308 nm 387nm 355 nm 347 nm 332 nm Holographic Grating 3600 gr/mm Dispersion 0.3 nm/mm Spectral bandwidth 1 nm 300 nm 40 %

11 6 Independent channels processing, stock of signals Discriminators 1/channel High speed counters 300 MHz 1024 time gates of 1  s (150 m) Max. count rate counts/  s Chopper yes/not (trigger -> quartz crystal) On-line visualization: signals, slopes, profile & total O 3 Acquisition 6 PMTs Hamamatsu Gated photomultipliers for 308, 355 nm Low dark current, adapted for photo counting

12 Little History of RG Site Events 2004Jun 2005Aug 2005-Dec 2006Sep 2007 DIAL Ozone Instrument Ready to measure Transportation Of Instrument to Rio Gallegos Site SOLAR Campaign Start with UVO3Patagonia Project Dec 2008 Admission of DIAL Ozone Inst. To NDACC Network First Ozone Sonde Campaign in Río Gallegos Mar 2010Mar nd Ozone Sonde Campaign

13 Statistics of Stratospheric Ozone Measurements Number of Samples

14 Admitted on Dec 2008

15 Lidar-ECC Sonde Comparison Comparison of averaged ozone profiles obtained from 5 quasi coincident ECC sondes (dotted line) and averaged lidar ozone profile (white line). The shadow area correspond to +/- 1s of lidar measurements and horizontal line correspond to +/- 1s of sondes. New differential absorption lidar for stratospheric ozone monitoring in Patagonia, South Argentina E A Wolfram et al 2008 J. Opt. A: Pure Appl. Opt (7pp) doi: / /10/10/ / /10/10/104021

16 Argentina – Chile collaboration 3 sondes launched in Río Gallegos site, collocated with DIAL during first week of March

17 Argentina – Chile collaboration 3 sondes launched during the night in Río Gallegos site, collocated with DIAL during 2nd week of March 2011 OZone profIle aT RíO GallegoS

18 Validación de Satélites GOMOS -Rio Gallegos  Collocation criteria:  Measurements within 800 km and < 24 h  Global validation of ENVISAT ozone profiles using lidar measurements  J.A.E. Van Gijsel., D.P.J. Swart., J.-L. Baray, H. Claude, T. Fehr, P. Von Der Gathen., S. Godin- Beekmann., G.H. Hansen., T. Leblanc, I.S. Mcdermid, Y.M. Meijer, H. Nakane, E.J. Quel, W. Steinbrecht, K.B. Strawbridge, B. Tatarov.And E.A. Wolfram. Special Issue on the Montreal Protocol in the International Journal of Remote Sensing 30, (15-16): , 2009.

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20 Time Evolution of Total Ozone in Río Gallegos (2009) Study case 1 (October 3 and 4) Prolonged O3 Reduction Extreme Event (November 2009)

21 Study Case 1 of Ozone Hole overpass in RG Site during 2009 OMI/AURA Oct Oct Oct

22 Time Evolution of Total Ozone in Río Gallegos (2009) Prolonged O3 Reduction Extreme Event (November 2009)

23 Study Case 2 Extreme Persist Ozone Hole over Río Gallegos daily evolution of total ozone column for Río Gallegos measured with Brewer 124 spectrophotometer (blue open circles) and SAOZ spectrometer (black open diamonts), and OMI satellite measurement (red line).

24 UV Increase Produced by Ozone Reduction Total Ozone (DU)

25 Intensive Measurement Period 2006 August September October November December Measurement 34 Altitude (km) Total Ozone (DU) Ozone Number Density [molec/cm 3 ]

26 Intensive Measurement Period 2006 August September October November December 34 Lidar Measurements ~4 hs average time each one 140 hrs. acquisition ~15 million laser shots Anomaly

27 Pyranometer Radiometer GUV 541 UV-B Radiometer UV-A Radiometer Río Gallegos Site

28 UV Index at Río Gallegos Period: August 1, 2005 – October Data Level 1.5

29 New Capability of Temperature Lidar Profile in RG Site Comparison Lidar with HIRDLS/AURA-NASA Mean ± 1σ dev HIRDLS Error bars are plus and minus 1σ dev ΔS < 500 Km ΔT ± 12 Hs N = 94 Measurements Temperature Profiles Without Correction by Aerosols using Lidar Rayleigh Temperature Profiles With Correction by Aerosols using Lidar Rayleigh 1 Km Resolution HIRDLS

30 Observatorio Atmosférico de la Patagonia Austral (Atmospheric Observatory of Southern Patagonia) Visit of Cristina Fernandez March 2011, Inauguration MM-Wave Radiometer Nagoya University

31 Recent Publication –Congress Communications Journals – Proccedings -Global validation of ENVISAT ozone profiles using lidar measurements J.A.E. Van Gijsel., D.P.J. Swart., J.-L. Baray, H. Claude, T. Fehr, P. Von Der Gathen., S. Godin-Beekmann., G.H. Hansen., T. Leblanc, I.S. Mcdermid, Y.M. Meijer, H. Nakane, E.J. Quel, W. Steinbrecht, K.B. Strawbridge, B. Tatarov.And E.A. Wolfram. Special Issue on the Montreal Protocol in the International Journal of Remote Sensing 30, (15-16): , GOMOS ozone profile validation using ground-based and balloon sonde measurements J. A. E. van Gijsel, D. P. J. Swart, J.-L. Baray, H. Bencherif, H. Claude, T. Fehr, S. Godin-Beekmann, G. H. Hansen, P. Keckhut, T. Leblanc, I. S. McDermid, Y. J. Meijer, H. Nakane, E. J. Quel, K. Stebel, W. Steinbrecht, K. B. Strawbridge, B. I. Tatarov, and E. A. Wolfram Atmos. Chem. Phys. Discuss., 10, 8515–8551, Published by Copernicus Publications on behalf of the European Geosciences Union. Received: 31 January 2010 – Accepted: 21 March 2010 – Published: 1 April 2010www.atmos-chem-phys-discuss.net/10/8515/2010/ -Extreme sunbathing: Three weeks of small total O 3 columns and high UV radiation over the southern tip of South America during the 2009 Antarctic O 3 hole season de Laat, A. T. J., R. J. van der A, M. A. F. Allaart, M. van Weele, G. C. Benitez, C. Casiccia, N. M. Paes Leme, E. Quel, J. Salvador, and E. Wolfram (2010), Geophys. Res. Lett., 37, L14805, doi: /2010GL Climatology Of Stratospheric Ozone Profiles In Río Gallegos, Argentina Wolfram, Elian; Salvador, Jacobo; D´Elía, Raúl; Godin-Beekmann, Sophie; Quel, Eduardo. Proceedings Of The 25th International Laser Radar Conference (Ilrc 2010), Vol.Ii, Pp Rayleigh lidar temperature profiles between km during SOLAR campaign in Río Gallegos (51º55´s, 69º14´w), Argentina: methodology and results Salvador, Jacobo; Wolfram, Elian; D´Elía, Raúl; Godin-Beekman, Sophie; Quel, Eduardo. Proceedings of the 25th International Laser Radar Conference (ILRC 2010), Vol.II, pp

32 Argentina-France Collaboration in Ozone Topics -Container (2002) -Electronic (2003) -Construction - Inversion Algorithm - SAOZ instrument (2008) -Data Interpretation -Use of MIMOSA and MIMOSA-CHIM Models -PICS project UVO3Clim- Patagonie ( )

33 Summary The Atmospheric Observatory of Southern Patagonia is operative In December 2008, the Ozone DIAL joined to NDACC. Also in September 2009, SAOZ radiometer was admitted as NDACC instrument During days with vortex proximity, strong reductions of vertical ozone number density were observed. Depletions of % were measured in vertical profiles associated to ozone hole The preliminary analysis of ozone profiles show that the biggest impact of polar vortex over vertical ozone distribution in Río Gallegos is in the middle stratosphere, between km

34 Outlook Study of stratospheric ozone depletion in the context of ozone recovery and climate change: Statistical analysis of temporal evolution of vortex overpasses over Southern Argentina in relation with climate indices and impact on UV radiation Evaluation of satellite observations using ozone vertical distribution measurements (lidar) and total ozone measurements (SAOZ, Brewer) Evaluation of Chemistry Transport Model long term simulations (e.g. Reprobus and SLIMCAT models) and Chemistry Climate Model simulations (CCMVAL II results) with respect to observations and statistical analyses. Collaboration with teams working on Antarctic surface climate??

35 Acknowledgements  JICA (Japan International Cooperation Agency)  Lidar Division Team  NIES (Japan)  LATMOS-IPSL/CNRS and French Team

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37 Use of Laser as radiation source of remote sensing instruments CEILAP Lidar Division’s Capabilities LIDAR Instrument Development Gases Measurement Water Vapor Stratospheric Ozone Monitoring of Atmospheric Phenomena and Pollution Urban Pollution Biomass Burning Volcanic Ash Atmospheric Aerosols Monitoring of trace gases -Mean Latitudes Ozone Reduction -Ozone Hole Measurements SOLAR Campaign UVO 3 Patagonia Project Passive Remote Sensing UV-Vis Radiation Measurements Aerosol Optical Thickness (AERONET) Total Columns of O 3 y NO 2 (SAOZ)

38 Summary The stronger impact of ozone hole in surface UV radiation was observed during ozone hole dilution Also, overpass of poor ozone air masses over Rio Gallegos have high impact on UVI during summer Cloud cover modulate strongly the surface UV radiation, producing attenuation of 50% and increment of 20% in UVI (cloud border)


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