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4ª Reunión Red Ibérica MM5 The Internet Data Distribution System Group 17 presenter: Guilherme O. Chagas

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Presentation on theme: "4ª Reunión Red Ibérica MM5 The Internet Data Distribution System Group 17 presenter: Guilherme O. Chagas"— Presentation transcript:

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

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

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, 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: - - – – link to IDD-Brasil – –Yoshohiro Yamasaki - –Guilherme O. Chagas (LPM/UFRJ) – –David Garrana (LPM/UFRJ) – –Waldenio Almeida (CPTEC/INPE) –

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