Meteorological Assimilation Data Ingest System (MADIS)Entry ID: FSL_MADIS
Abstract: More Information: http://madis.noaa.gov/
The Meteorological Assimilation Data Ingest System (MADIS) is dedicated toward making value-added data available from the National Oceanic and Atmospheric Administration's (NOAA) Forecast Systems Laboratory (FSL) for the purpose of improving weather forecasting, by providing support for data assimilation, numerical weather prediction, and other ... hydrometeorological applications.
MADIS subscribers have access to a reliable and easy-to-use database containing real-time and archived datasets. The FSL MADIS database is available via either ftp or using Unidata's Local Data Manager (LDM) software. Users can subscribe to the entire database, or ask for only particular datasets of interest.
Quality Control (QC) of MADIS observations is also provided, since considerable evidence exists that the retention of erroneous data, or the rejection of too many good data, can substantially distort forecast products. Observations in the FSL database are stored with a series of flags indicating the quality of the observation from a variety of perspectives (e.g. temporal consistency and spatial consistency), or more precisely, a series of flags indicating the results of various QC checks. Users of MADIS can then inspect the flags and decide whether or not to ingest the observation.
MADIS also includes an Application Program Interface (API) that provides users with easy access to the data and quality control information. The API allows each user to specify station and observation types, as well as QC choices, and domain and time boundaries. Many of the implementation details that arise in data ingest programs are automatically performed. Users of the MADIS API, for example, can choose to have their wind data automatically rotated to a specified grid projection, and/or choose to have mandatory and significant levels from radiosonde data interleaved, sorted by descending pressure, and corrected for hydrostatic consistency.
The API is designed in such a way that the underlying format of the database is completely invisible to the user, a design that also allows it to be easily extended to non-FSL databases. In the initial version of the API, support is provided for the FSL database, and also for the netCDF database used in the National Weather Service (NWS) Advanced Weather Interactive Processing System (AWIPS) deployed at NWS weather forecast offices.
The FSL MADIS database and API are freely available to interested parties in the meteorological community. The data files are also compatible with the analysis software provided by the Local Analysis and Prediction System (LAPS).
ISO Topic Category
Access Constraints MADIS subscribers can receive real-time data by requesting an
ftp account, or by requesting LDM access. Subscribers can also
make archive requests, which will be fulfilled off-line and made
available via ftp.
Role: SERF AUTHOR
Email: Scott.A.Ritz at nasa.gov
NASA Goddard Space Flight Center Global Change Master Directory
Province or State: Maryland
Postal Code: 20771
Role: TECHNICAL CONTACT
Email: madis-support at noaa.gov
Extended Metadata Properties
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Creation and Review Dates