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3 rd International LBA Conference, 2004

CHARACTERISTICS OF THE PRECIPITATING SYSTEMS DURING THE 2002 DRY-TO-WET FIELD CAMPAIGN IN THE AMAZON REGION. Carlos Augusto Morales 1 ,Luiz Augusto Toledo Machado 2 , Maria Assunção Faus Silva Dias 1,2 , Wando Amorim 1 , Maria Eugenia Baruzzi Frediani 1 , Rachel Ifanger Albrecht 1

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3 rd International LBA Conference, 2004

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  1. CHARACTERISTICS OF THE PRECIPITATING SYSTEMS DURING THE 2002 DRY-TO-WET FIELD CAMPAIGN IN THE AMAZON REGION Carlos Augusto Morales1 ,Luiz Augusto Toledo Machado2, Maria Assunção Faus Silva Dias1,2, Wando Amorim1, Maria Eugenia Baruzzi Frediani1, Rachel Ifanger Albrecht1 1Department of Atmospheric Science, University of São Paulo, Brazil 2Weather and Climate Prediction Center – CPTEC, INPE, Brazil 3rd International LBA Conference, 2004

  2. OVERVIEW 1. WEATHER RADAR INSIDES 2. GENERAL RAINFALL CHARACTERISTICS 3. THUNDERSTORMS AND RAIN SHOWERS

  3. Data Set

  4. 1. WEATHER RADAR INSIDES

  5. Brazilian Doppler S-Band Weather Radar • Brazilian Weather Radar: TECSAT/TECTELCOM • Frequency: 2.7 – 3 GHz : S-Band • Antenna: 2 degrees beam width • Power: 750 kW • Range Coverage: 150 and 375 km • Bin size:Volscan Strategy: 375, 250 and 125 mSurveillance Strategy: 1 km • Software: GAMIC

  6. Operational Routine: 10 min • Volume Scans: - 150 km range;- 24 elevations (0-50o);- PRF: 750 Hz;- Z, UZ, Doppler Velocity and Width; • Surveillance:- 375 km range;- 2 elevations (0.0 and 0.5o); - PRF: 400 Hz;- Z, UZ, Doppler Velocity and Width;

  7. Data Availability • September 16th through 27th; • October 4th through 9th; • October 11th through November 7th;

  8. RADAR DATA ARE AVAILABLE VIA WEBSITE:http://www.master.iag.usp.br/lba OR BY ftp access:ftp.master.iag.usp.br (username:dadoslba and password: r0nd0nia) CAPPI: 5 x 5 km (horizontal) from 2 to 20 km height ASCII Files and GIF/PNG images for Corrected Radar Reflectivity Factor Radial Doppler Velocity Readme files, navigation files and reading codes

  9. RADAR CALIBRATION

  10. Radar Bias Offset: TRMM Intercomparison

  11. BIAS Retrieved: +6.47 dBZ

  12. 2. GENERAL RAINFALL CHARACTERISTICS

  13. CAPPI at 2km (5x5 km) x Rain gauges

  14. Daily Means – Time Series - 1 Radar Not Working

  15. Daily Means – Time Series – 2 Radar Not Working

  16. Diurnal Cycle

  17. 3. THUNDERSTORMS AND RAIN SHOWERS

  18. Mature Development Decay Iniciation AREA Lifetime Evolution – CS Stage

  19. SATELLITE CLOUD TRACKING OVER CONVECTIVE SYSTEMS Frediani et al. Poster 42.10-P

  20. CS LIFECYCLE 100 – 1,000 Pixels 22 – 71 km Radius 1,000 – 10,000 Pixels71 – 225 km Radius > 10,000 Pixels> 225 km Radius Frediani et al. Poster 42.10-P

  21. LIGHTNING FLASH DENSITY LIFECYCLE Frediani et al. Poster 42.10-P

  22. RADAR TRACKING OVER RAIN STORMS

  23. HOW DOES IT CHANGE IN TIME THE MEAN VERTICAL CONVECTIVE PROFILES IN THUNDERSTORMS AND RAIN STORMS?

  24. This study was supported by CNPq (Conselho Nacional de Desenvolvimento Cientifico e Tecnólogico, Brazil)/IRD (Institut de Recherche pour le Développement, France) cooperative Project Grant number 910153/98-1, CAPES/COFECUB. The work has also received financial support from (FAPESP) grant 3th International LBA Conference, 2004 SPECIAL THANKS TO ALL THE STUDENTS FROM USP, UNIVAP AND UNIR THAT MAKE THIS FIELD CAMPAIGN TO WORK.

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