1. 4ª Reunión Red Ibérica MM5 The Internet Data Distribution System Group 17 presenter: Guilherme O. Chagas (goc@ufrj.br)

2. IDD Network IDD – Unidata Internet Data Distribution System – Disseminating near real-time earth observations via the Internet – Open to participation by universities and degree-granting institutions for purpouses of education and research – Real-time data delivery system: data sent as soon as available from the observing system – Subscription based data delivery: users specify in advance which data should be delivered to their system – Community based architecture: hierarchical data distribution scheme

3. IDD Network Organized and guided by the Unidata Program Center (UPC). – Community of over 160 institutions vested in the common goal of sharing data, and tools to access and visualize that data – A program of UCAR/UOP, sponsored by NSF – Acts as the leader of a community with over 160 institutions – Vested in the commom goal of sharing data and tools to access and visualize earth-related data www.unidata.ucar.edu

4. IDD Network Community driven – UPC: develops, maintains and supports many tools at no charge coordinates the usage of high-interest data acts as a data facilitator – Universities: maintain computers and infrastructure to serve the community as defined by UPC Inject data of less interest in IDD without UPC involvement

5. IDD Network (Unidata, www.unidata.ucar.edu) IDD data relay scheme

6. IDD Network Members in the US include: – National Center for Environmental Prediction (NCEP) – National Weather Service (NWS) – Storm Prediction Center (SPC) – Tropical Prediction Center (TPC) – Aviation Weather Center (AWC) – Hydrologic Prediction Center (HPC) – Marine Prediction Center (MPC), etc...

7. IDD-Brazil effort IDD-Brazil: extension of IDD network through South America – Started at LPM/UFRJ in 2001 – Officially created in 2003 – Meteoforum – Joint effort involving: UFRJ CPTEC USP UFPA Unidata – Constant interaction with Universities in Portugal

8. IDD-Brazil effort Members in South America: – Universidade Federal do Rio de Janeiro – Centro de Previsão de Tempo e Estudos Climáticos – Universidade de São Paulo – Universidade Federal do Pará – Laboratório Nacional de Computação Científica – Marinha do Brasil – CEFET-RJ – PUC Minas Gerais – Instituto Nacional de Meteorologia – Universidad de Buenos Aires – Universidad de Chile

9. How the network operates LDM – Local Data Manager: the IDD building block – Collection of programs that select, capture, manage and distribute arbitrary data – Network client and server abilities, specific protocol – Event-Driven data distribution: allowing real-time distribution – Extremely configurable and flexible

10. How the network operates LDM communications scheme

11. How the network operates A worldwide community – Multiple sources: each LDM server can receive data from many sites and distribute it to many others – Redundancy and reliability: the IDD system is decentralized, has no datacenter – Load distribution: designed to avoid excessive traffic on any node or link – Requires only an Internet connection: worlwide reach

12. How the network operates IDD topology

13. Available Data Types of data provided in Real-time (high-interest) – Domestic Data Service (e.g., surface, upper air, buoy) (US only) – Public Products Service (textual information; e.g., watches, warnings, forecast discussions, etc.) (US only) – International Data Service (worldwide observations) – Operational forecast model output (e.g., GFS, NAM, UKMET, etc.) – GOES Satellite imagery and derived products – Aircraft Data (ACARS/AMDAR) Information – NOAA Profiler Network data – High-resolution model data from NCEP (e.g., GFS 0.5 degree) – WSR 88-D NIDS and Level II radar products (US only) – Canadian Meteorological Center GEM model output – NOGAPS and COAMP model data from FNMOC – National Lightning network data – GPS Precipitable water vapor observations

14. Available Data Experimental Data on IDD-Brazil – INPE SCD (automated stations) network: over 130 meteorological stations – DECEA (Departamento de Controle do Espaço Aéreo): a large number of airdrome stations currently unavailable on GTS – CPTEC ETA regional model: 00Z and 12Z runs. – UFRJ WRF and MM5 model runs.

15. Available Data Surface data available on Brazil

16. Available Data CPTEC/ETA sample plots

17. Available Data Product visualization and generation using GEMPAK – Collection of programs capable of decoding received data – Generates graphics and analysis – NMAP2: GUI that aggregates several programs in a unified interface – Flexible: based on tables (indexes) to configure its processes

18. Available Data Satellite derived winds in NMAP2

19. IDD in Portugal Universidade de Aveiro: using IDD since 2003 – Operational usage of NCEPs GFS (including 0.5 degree) to run WRF and MM5. – Project submitted to FCT, planned to provide training workshops to scientific community. Universidade de Évora: distributing data to Africa – SICLIMAD: providing training to Portuguese speaking countries. – Cooperation with CPTEC/INPE.

20. Summary IDD: a community-driven network Freely available for Universities and Degree-granting institutions Delivers reliable, real-time data Expansible: users can add data with virtually no costs Provides excellent tools to visualize and generate products Enhancing cooperation between different countries

21. Summary More information about IDD-Brazil: - www.ufpel.tche.br/ - www.lpm.meteoro.ufrj.br/idd-brasil –www.cptec.inpe.br – link to IDD-Brasil –www.unidata.ucar.edu –Yoshohiro Yamasaki - yamasaki@fis.ua.pt –Guilherme O. Chagas (LPM/UFRJ) – goc@ufrj.br –David Garrana (LPM/UFRJ) – garrana@acd.ufrj.br –Waldenio Almeida (CPTEC/INPE) – gambi@cptec.inpe.br