HR: 11:15h
AN: IN32A-04    [Abstracts]
TI: Applications For Real Time NOMADS At NCEP To Disseminate NOAA's Operational Model Data Base
AU: * Alpert, J C
EM: jordan.alpert@noaa.gov
AF: NOAA National Centers for Environmental PRediction, 5200 Auth Road, Camp Springs, MD 20746, United States
AU: Wang, J
EM: jun.wang@noaa.gov
AF: NOAA National Centers for Environmental PRediction, 5200 Auth Road, Camp Springs, MD 20746, United States
AU: Wang, J
EM: jun.wang@noaa.gov
AF: Science Applicaiton International Corporation, 4600 Powder mill Road, Beltsville, MD 20705, United States
AU: Rutledge, G
EM: glenn.rutledge@noaa.gov
AF: Glenn Rudtledge, 151 Patton Avenue, Asheville, NC 28801, United States
AB: A wide range of environmental information, in digital form, with metadata descriptions and supporting infrastructure is contained in the NOAA Operational Modeling Archive Distribution System (NOMADS) and its Real Time (RT) project prototype at the National Centers for Environmental Prediction (NCEP). NOMADS is now delivering on its goal of a seamless framework, from archival to real time data dissemination for NOAA's operational model data holdings. A process is under way to make NOMADS part of NCEP's operational production of products. A goal is to foster collaborations among the research and education communities, value added retailers, and public access for science and development. In the National Research Council's "Completing the Forecast", Recommendation 3.4 states: "NOMADS should be maintained and extended to include (a) long-term archives of the global and regional ensemble forecasting systems at their native resolution, and (b) re-forecast datasets to facilitate post-processing." As one of many participants of NOMADS, NCEP serves the operational model data base using data application protocol (Open-DAP) and other services for participants to serve their data sets and users to obtain them. Using the NCEP global ensemble data as an example, we show an Open-DAP (also known as DODS) client application that provides a request-and-fulfill mechanism for access to the complex ensemble matrix of holdings. As an example of the DAP service, we show a client application which accesses the Global or Regional Ensemble data set to produce user selected weather element event probabilities. The event probabilities are easily extended over model forecast time to show probability histograms defining the future trend of user selected events. This approach insures an efficient use of computer resources because users transmit only the data necessary for their tasks. Data sets are served by OPeN-DAP allowing commercial clients such as MATLAB or IDL as well as freeware clients such as GrADS to access the NCEP real time database. We will demonstrate how users can use NOMADS services to repackage area subsets and select levels and variables that are sent to a users selected ftp site. NOMADS can also display plots on demand for area subsets, selected levels, time series and selected variables.
UR: http:nomad5.ncep.noaa.gov
DE: 0530 Data presentation and visualization
DE: 0850 Geoscience education research
DE: 3394 Instruments and techniques
DE: 6979 Space and satellite communication
DE: 9810 New fields (not classifiable under other headings)
SC: Earth and Space Science Informatics [IN]
MN: 2007 Joint Assembly