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CHARACTERISTICS OF THE PRECIPITATING SYSTEMS DURING THE 2002 DRY-TO-WET FIELD CAMPAIGN IN THE AMAZON REGION Carlos Augusto Morales 1,Luiz Augusto Toledo.

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Presentation on theme: "CHARACTERISTICS OF THE PRECIPITATING SYSTEMS DURING THE 2002 DRY-TO-WET FIELD CAMPAIGN IN THE AMAZON REGION Carlos Augusto Morales 1,Luiz Augusto Toledo."— Presentation transcript:

1 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 1 Department of Atmospheric Science, University of São Paulo, Brazil 2 Weather and Climate Prediction Center – CPTEC, INPE, Brazil 3 rd 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 m Surveillance Strategy: 1 km Software: GAMIC

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

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

8 RADAR DATA ARE AVAILABLE VIA WEBSITE: ftp.master.iag.usp.br dadoslbar0nd0nia 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

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13 BIAS Retrieved: dBZ

14 2. GENERAL RAINFALL CHARACTERISTICS

15 CAPPI at 2km (5x5 km) x Rain gauges

16 Daily Means – Time Series - 1 Radar Not Working

17 Daily Means – Time Series – 2 Radar Not Working

18 Diurnal Cycle

19 3. THUNDERSTORMS AND RAIN SHOWERS

20 Lifetime Evolution – CS Stage AREA Iniciation Development Mature Decay

21 SATELLITE CLOUD TRACKING OVER CONVECTIVE SYSTEMS Frediani et al. Poster P

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

23 LIGHTNING FLASH DENSITY LIFECYCLE Frediani et al. Poster P

24 RADAR TRACKING OVER RAIN STORMS

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

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29 3th International LBA Conference, 2004 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 /98-1, CAPES/COFECUB. The work has also received financial support from (FAPESP) grant SPECIAL THANKS TO ALL THE STUDENTS FROM USP, UNIVAP AND UNIR THAT MAKE THIS FIELD CAMPAIGN TO WORK.


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