# Presentation: 438682

## 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;

_**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

**Volumetric 240 km data are stored, every 15 minutes;**
**CAPPIs are transmitted to CPTEC to produce rainfall mosaics:**
**Rain gauges are stored at CPTEC**** ****	**_**Second Stage**_
**Volumetric data will be transmitted to a database;**
**Radar re-processing;**
**Development of rainfall products;**

**Scientific collaboration between INPE, USP, INMET, DEMET, IPMet/UNESP, TECSAT/UNIVAP allowed the integration of 9 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;**
**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 GHz******1 - 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)***

## Efforts of the Brazilian scientific community towards the ground validation

## 150 GHz on HSB

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**Border**

## 183.33  7 GHz on HSB

***183.33 ************ 7 GHz on HSB***

## GPROF X PR X Rain Gauges4 months of data over the Amazon Region

***Rain Gauges***

***PR-2A25***

***GPROF-2A12-V6***

## GPROF X PRCv and St partitions

## PR X Disdrometer

**TRMM**

**Disdrometer**

## Horizontal Resolution dependency on Horizontal Gradients

**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

***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

**DJF**
**10****o****x10****o**

## Planned Field Campaigns

**BARCA 2006 – Amazon Region****Radar and aircraft measurements;**
**TroCCiBras 2008, (TROCCINOX/HIBISCUS), S****ã****o Paulo State****Radar and aircraft measurements;**