characteristics of the precipitating systems during the 2002 dry-to-wet field campaign in the amazon...

CHARACTERISTICS OF THE CHARACTERISTICS OF THE PRECIPITATING SYSTEMS DURING THE PRECIPITATING SYSTEMS DURING THE 2002 DRY-TO-WET FIELD CAMPAIGN IN 2002 DRY-TO-WET FIELD CAMPAIGN IN

THE AMAZON REGIONTHE 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, Brazil2Weather and Climate Prediction Center – CPTEC, INPE, Brazil

3rd International LBA Conference, 2004

OVERVIEWOVERVIEW

1. WEATHER RADAR INSIDES1. WEATHER RADAR INSIDES

2. GENERAL RAINFALL CHARACTERISTICS2. GENERAL RAINFALL CHARACTERISTICS

3. THUNDERSTORMS AND RAIN SHOWERS3. THUNDERSTORMS AND RAIN SHOWERS

Data Set

1. WEATHER RADAR INSIDES1. WEATHER RADAR INSIDES

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

• 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;

Operational Routine: 10 min

Data Availability

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

RADAR DATA ARE AVAILABLE VIA WEBSITE: http://www.master.iag.usp.br/lbahttp://www.master.iag.usp.br/lba

OR BY ftp access: ftp.master.iag.usp.brftp.master.iag.usp.br (username:dadoslbadadoslba and password: r0nd0niar0nd0nia)

CAPPI: 5 x 5 km (horizontal) from 2 to 20 km heightCAPPI: 5 x 5 km (horizontal) from 2 to 20 km height

ASCII Files and GIF/PNG images for ASCII Files and GIF/PNG images for Corrected Radar Reflectivity FactorCorrected Radar Reflectivity Factor

Radial Doppler VelocityRadial Doppler Velocity

Readme files, navigation files and reading codesReadme files, navigation files and reading codes

RADAR CALIBRATIONRADAR CALIBRATION

Radar Bias Offset: TRMM Intercomparison

BIAS Retrieved: BIAS Retrieved: +6.47 dBZ+6.47 dBZ

2. GENERAL RAINFALL CHARACTERISTICS2. GENERAL RAINFALL CHARACTERISTICS

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

Daily Means – Time Series - 1

Radar Not WorkingRadar Not Working

Daily Means – Time Series – 2

Radar Not WorkingRadar Not Working

Diurnal Cycle

3. THUNDERSTORMS AND RAIN SHOWERS3. THUNDERSTORMS AND RAIN SHOWERS

Lifetime Evolution – CS Stage

AREA

Iniciation

Development

Mature

Decay

SATELLITE CLOUD TRACKING OVER SATELLITE CLOUD TRACKING OVER CONVECTIVE SYSTEMSCONVECTIVE SYSTEMS

Frediani et al. Poster 42.10-P

100 – 1,000 Pixels 22 – 71 km Radius

1,000 – 10,000 Pixels71 – 225 km Radius

> 10,000 Pixels> 225 km Radius

CS LIFECYCLECS LIFECYCLE

Frediani et al. Poster 42.10-P

LIGHTNING FLASH DENSITY LIFECYCLELIGHTNING FLASH DENSITY LIFECYCLE

Frediani et al. Poster 42.10-P

RADAR TRACKING OVER RAIN STORMSRADAR TRACKING OVER RAIN STORMS

HOW DOES IT CHANGE IN TIME THE HOW DOES IT CHANGE IN TIME THE MEAN VERTICAL CONVECTIVE MEAN VERTICAL CONVECTIVE

PROFILES IN PROFILES IN

THUNDERSTORMSTHUNDERSTORMS AND AND RAIN STORMSRAIN STORMS??

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 910153/98-1, CAPES/COFECUB. The work has also received financial support from (FAPESP) grant

SPECIAL THANKS TO ALL THE STUDENTS FROM SPECIAL THANKS TO ALL THE STUDENTS FROM USP, UNIVAP AND UNIR THAT MAKE THIS FIELD USP, UNIVAP AND UNIR THAT MAKE THIS FIELD CAMPAIGN TO WORK.CAMPAIGN TO WORK.