A NOWCASTING SYSTEM USING SATELLITE AND RADAR DATA: THE CHUVA PROJECT

EXPERIENCE

Luiz Augusto Machado

Chuva Science Team

CHUVA Project:

6

CHUVA Project:

Cloud processes of t He main precipitation systems in Brazil:

A contrib Ution to cloud resol Ving modeling and to the GPM (Glob Al Precipitation

Measurement)

CHUVA Project: Main Goals

WORKING GROUP–1: CHARACTERISTICS OF THE PRECIPITATING SYSTEMS AS FUNCTION OF THE

REGION AND LIFE STAGE (Luiz Machado)

WORKING GROUP–2: PRECIPITATION ESTIMATION – DEVELOPMENT AND VALIDATION ALGORITHM

(Daniel Vila)

WORKING GROUP–3: ELETRIFICATION PROCESS: MOVING FROM CLOUDS TO THUNDERSTORMS

(Carlos Morales)

WORKING GROUP–4: CHARACTERISTICS OF THE BOUNDARY LAYER FOR DIFFERENT CLOUD

PROCESSES AND PRECIPITATION REGIMES (Gilberto Fisch)

WORKING GROUP–5: MODEL IMPROVEMENTS AND VALIDATION, WITH FOCUS IN CLOUD

• Contributes to Improve Rainfall Estimation Using Satellites and/or Radar

• Contributes to Improve Skill of Cloud Resolving Models• Develop a Cloud Process Climatology of the Main Precipitation

Systems in Brazil.• Develop Tools for Nowcasting.

WORKING GROUP–5: MODEL IMPROVEMENTS AND VALIDATION, WITH FOCUS IN CLOUD

MICROPHYSICS AND AEROSOL INTERACTIONS, FOR SATELLITE PRECIPITATION ESTIMATES IN

BRAZIL (Maria SilvaDias)

CHUVA Field Campaign Schedule

CHUVA Portal: http://chuvaproject.cptec.inpe.br/portal/en/

Field Campaign and SOS System

Fortaleza Campaign – System running in Civil Defense

Risk areas (flood, landslide)

FORTALEZA SYSTEM

Flooding simulation

FORTALEZA SYSTEM

Risk areas

Belem Campaign – Running in Meteorological Departmen t at the University Together with Weather Service and Amazonas Surveilla nce System

BELÉM SYSTEM

Severe Weather Monitoring System (SOS)

SOS -Chuva ProjectCHUVA Project provides the SOS system, it is a pilot

project for integrating environmental information enabling the optimization and assist planing of Defense Civil actions.

GOES-R Geostationary Lightning Mapper (GLM):Pre-Launch Algorithm Validation-CHUVA Campaign Report

Contribution to the Contribution to the

CHUVA Campaign

lightning

S-Band radars

XPOL radar

São José dos Campos System – sources of information

forecast

satellite

XPOL radar – 100km radius (ring every 25km)

XPOL and S-Band (yellow) radar 250km radius (ring e very 50km)

XPOL, S-Band and S-Band (orange) radars - 250km radi us (ring every 50km)

Last Three Days Rainfall - Colors represent the war ming status (as defined by Civil Defence)

Rainfall data + cartography map = fast assimilation of current situation

Each point contain information about rainfall accum ulated in 3 days

System can also provide a list of neighborhoods sor ted by rainfall

New Features being Introduced in SOS/ForTraCC

• Multichannel Satellite Winds – Inner Cloud Top Struc tures

High resolution winds computed from Brightness Temperature Difference

Convective Cloud Top Features.(submitted to IJRS - Negri, Machado, Borde)

• Lightning Parameterization – ForTraCC

Parameterization as function of size, TB and Area expansion been including in Fortracc(Mattos and Machado – ICAE 2011)

• The use of Brightness Temperature DifferenceTo classify Cloud Reflectivity Profile(Lima and Machado, submitted to IJRS)

Figure 5. Histogramas das diferenças a) BTD10.8-3.9n, b) BTD10.8-3.9d, c) BTD6.2-10.8, d) BTD8.7-10.8, e e)

BTD10.8-12 para os seis centróides Bright Band Stratiform Clouds.

New Features being Introduced in SOS/ForTraCC

• Rain Cells Propagation

• Radar Severity Index• Radar Severity Index

• Rain Cells Cloud Top Rate and Area Expansion – Dynam ic Severity Index

2,45

)(

6,35

)(

525

)(

4,15

³)/(

215

²)/(

×

+×

+×

+×

+×

=

kmELALTWALDVOG

kmALTMAXREFdBZMAXREFmgDVILmkgVILÍNDICE

Conclusions

• CHUVA nowcasting test bed is proving the efficiency of free access of real time data and products to the population.

• SOS-ForTraCC is being tested and • SOS-ForTraCC is being tested and validaded showing very promise results.

• New products and different access levels (Science, Civil Defense and Population) to SOS Fortracc is a very important tool for science and disaster reduction effects.

Thank You

Next CHUVA Campaign – November-December 2012 – Southern Brazil