GV Activities in Brazil:
Brazilian initiative towards the
establishment of GPM-BR program
Carlos A. Morales,
Carlos Frederico Angelis, Luiz A. T. Machado, Roberto
V. Calheiros, Reinaldo B. Silveira, Maria A. S. Dias,
Eduardo Assad, Augusto Pereira, Raimundo N. F. Mussi
GPM-Brazil
In October of 2004, The Space Agency of Brazil (AEB) creates the program with the participation of INPE, INMET, USP, IPMet/UNESP, and EMBRAPA;
Annual budget for proposal submissions;
In the first semester of 2005 the Federal Government of Brazil approves the PNAE-2005-2014 with a recommendation for GPM mission.
The Brazilian government acknowledges the importance of the global precipitation monitoring and proposes the launch of a “Multi Sensor Platform” to measure precipitation along with the GPM program.
Possible Satellite characteristics: Tropical Orbit Satellite; Microwave Imager similar to INDIAN MATRA sensor; WFI/CCD of CBERS satellite (lightning observations); Data reception and transmission to automatic
weather stations;
Main Planned Actions
Brazilian Ground Validation network;
Rainfall Ground Validation;
Development of ground receiver radiometers;
Development of microwave radiative transfer code coupled
with a NWP model that is operational in Brazil;
Dissemination of GPM rainfall products;
Brazilian Ground Validation Network
Operational radars in Brazil:
20 - Doppler S-Band
1 - S-Band
1 - Doppler C-Band
1 - Doppler X-Band
Manufactures:
15 - EEC Radars
7 - TECTELCOM
1 - McGill
Software:
17 Gamic; 2 IRIS; 1 EDGE; 1 EDGE; 1 McGill; 1 Univ. Paul Sabatier
Automatic weather stations transmitted to CPTEC-INPE
Radar Integration - I
1)1) Volumetric 240 km data are Volumetric 240 km data are stored, every 15 minutes;stored, every 15 minutes;
2)2) CAPPIs are transmitted to CAPPIs are transmitted to CPTEC to produce rainfall CPTEC to produce rainfall mosaics:mosaics:
3)3) Rain gauges are stored at Rain gauges are stored at CPTECCPTEC
Second StageSecond Stage
4)4) Volumetric data will be Volumetric data will be transmitted to a database;transmitted to a database;
5)5) Radar re-processing;Radar re-processing;
6)6) Development of rainfall Development of rainfall products;products;
Scientific collaboration between Scientific collaboration between INPE, USP, INMET, DEMET, INPE, USP, INMET, DEMET, IPMet/UNESP, TECSAT/UNIVAP IPMet/UNESP, TECSAT/UNIVAP allowed the integration of 9 allowed the integration of 9 weather radars.weather radars.
Radar Integration - II
Third Stage
7) Other radar institutes are being invited to integrate the network;
8) Volumetric data will also be stored in the main database;
9) Hourly adjusted rainfall fields: Radar + gauges + satellite rainfall estimation
Rainfall Ground Validation
Rainfall characterization:
- Rainfall PDF´s as a function of precipitating systems;
- Mean drop size distribution as a function of precipitating
systems;
- Mean vertical hydrometeor distributions (aircraft
measurements);
Validation of Rainfall Estimates:
- Retrieval of the bias, and analysis of the bias dependency
(rainfall intensity, Cv/St, precipitating systems, and etc.)
Main Ground Validation Site
Presidente Prudente
Bauru
Sao Roque
Salesopolis
Sao Jose dos Campos
4 - Disdrometers
20 Tipping buckets
Radiometers: 7, 22, 31, 43, 92 GHz1 - Disdrometer
RadioSonde
56 Automatic weather stations in SP state
Cloud microphysics aircraft
Lightning Network
USP/XPOL-2006
Ground Receiver Radiometers
• Collaboration with radio-astronomy groups for Rx development.
• portable 22 and 31 GHz was tested during the 2002-LBA field campaign;
• Working now on the new 92 GHz;
• Tests with the radiometers (7, 22, 31, 43, 92 GHz) in the radio-observatory of Atibaia will be carried out next austral summer
Radiometer designed in Brazil (22-31 GHz)Radiometer designed in Brazil (22-31 GHz)
Efforts of the Brazilian Efforts of the Brazilian
scientific community scientific community
towards the ground towards the ground
validationvalidation
150 GHz on HSB
Border
183.33 7 GHz on HSB
GPROF X PR X Rain Gauges4 months of data over the Amazon Region
Rain GaugesRain Gauges
PR-2A25PR-2A25
GPROF-2A12-V6GPROF-2A12-V6
GPROF X PRCv and St partitions
PR X DisdrometerPR X Disdrometer
TRMM Disdrometer
Horizontal Resolution dependency on
Horizontal Gradients
TRMM-PR
Bauru Radar
Differences of Tb(85 GHz) x R relationships for precipitation systems size
Differences of Tb(85 GHz) x R relationships for precipitation systems size
Seasonal intercomparisons between GCM(RegCM) and 3A25-V6 over the continent in Southeastern Brazil
2 4 6 8 10 12 14
2
4
6
8
10
12
14
9798 9899 9900 0001 0102
Re
gCM
(m
m/d
ay)
TRMM (mm/day)
DJF
10ox10o
Planned Field Planned Field CampaignsCampaigns
BARCA 2006 – Amazon Region
Radar and aircraft measurements;
TroCCiBras 2008, (TROCCINOX/HIBISCUS), São Paulo State
Radar and aircraft measurements;
