edu.ucar.gdex::d337000 eng; USA utf-8 dataset NSF NCAR Geoscience Data Exchange datahelp@ucar.edu https://gdex.ucar.edu NSF NCAR Geoscience Data Exchange The Geoscience Data Exchange (GDEX), managed by the Computational and Information Systems Laboratory (CISL) at NSF NCAR, contains a large collection of meteorological, atmospheric composition, and oceanographic observations, and operational and reanalysis model outputs, integrated with NSF NCAR High Performance Compute services to support atmospheric and geosciences research. download pointOfContact 2026-04-03T15:00:28Z ISO 19115 Geographic Information - Metadata ISO19115:2003/Cor 1 2006 https://doi.org/10.5065/Z83F-N512 https://emc.ncep.noaa.gov/emc/pages/infrastructure/bufrlib.php https Related Resource #1 NCEP BUFR software library http://www.emc.ncep.noaa.gov/mmb/data_processing/prepbufr.doc/document.htm http Related Resource #2 PREPBUFR Processing at NCEP http://nomads.ncep.noaa.gov/ http Related Resource #3 NCEP model data (includes prepbufr files in the gdas.* directories) https://www.ncei.noaa.gov/products/weather-climate-models/global-data-assimilation https Related Resource #4 NCEI gdas prepbufr obs archive https://www.emc.ncep.noaa.gov/emc/pages/infrastructure/bufrlib/tables/bufrtab_tableb.html https Related Resource #5 NCEP BUFRLIB MNEMONICS - BUFR TABLE B http://www.dtcenter.org/met/users/ http Related Resource #6 Model Evaluation Tools (MET) verification package http://www.nco.ncep.noaa.gov/sib/decoders/BUFRLIB/toc/prepbufr/ http Related Resource #7 NCEP example program and tutorial on decoding native PrepBufr data files NCEP ADP Global Upper Air and Surface Weather Observations (PREPBUFR format) d337000 2008-04-30 publication National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce author NSF National Center for Atmospheric Research publisher NCEP ADP Global Upper Air and Surface Weather Observations (PREPBUFR format) are composed of a global set of surface and upper air reports operationally collected by the National Centers for Environmental Prediction (NCEP). These include land surface, marine surface, radiosonde, pibal and aircraft reports from the Global Telecommunications System (GTS), profiler and US radar derived winds, SSM/I oceanic winds and TCW retrievals, and satellite wind data from the National Environmental Satellite Data and Information Service (NESDIS). The reports can include pressure, geopotential height, temperature, dew point temperature, wind direction and speed. Report time intervals range from hourly to 12 hourly. These data are the output from the PREPBUFR processing performed at NCEP, which is the final step in preparing the majority of conventional observational data for assimilation into the various NCEP analyses including the North American Model (NAM) and NAM Data Assimilation System (NDAS) unified grid-point statistical interpolation (GSI) analysis (the "NAM" and "NDAS" networks), the Global Forecast System (GFS) and Global Data Assimilation System (GDAS) unified grid-point statistical interpolation (GSI) analysis (the "GFS" and "GDAS" networks), the Rapid Refresh (RAP) unified grid-point statistical interpolation (GSI) analysis (the "RAP" network), the Real Time Mesoscale Analysis (RTMA) unified grid-point statistical interpolation (GSI) analysis (the "RTMA" network), and the Climate Data Assimilation System (CDAS) spectral statistical interpolation (SSI) analysis (the "CDAS" network). This step involves the execution of series of programs designed to assemble observations dumped from a number of on-line decoder databases, encode information about the observational error for each data type as well the background (first guess) interpolated to each data location, perform both rudimentary multi-platform quality control and more complex platform-specific quality control, and store the output in a monolithic BUFR file, known as PREPBUFR. The background guess information is used by certain quality control programs while the observation error is used by the analysis to weigh the observations. The structure of the BUFR file is such that each PREPBUFR processing step which changes a datum (either the observation itself, or its quality marker) records the change as an "event" with a program code and a reason code. Each time an event is stored, the previous events for the datum are "pushed down" in the stack. In this way, the PREPBUFR file contains a complete history of changes to the data throughout all of the PREPBUFR processing. The most recent changes are always at the top of the stack and are thus read first by any subsequent data decoder routine. It is expected that the data at the top of the stack are of the highest quality. The data provided here are also available in NetCDF and ASCII formats, which can be accessed by following the "Get a subset" link on the ds337.0 data access page [https://rda.ucar.edu/datasets/ds337.0/#!access]. The NetCDF datafiles are converted from PREPBUFR format using the pb2nc utility in the Model Evaluation Tools (MET) software package. onGoing datahelp@ucar.edu pointOfContact daily dataset https://gdex.ucar.edu/images/ds_logos/default_200_200.png Logo thumbnail from URL png WMO BUFR dataset Resource Type 2021-03-30 revision 4.4 DataCite Metadata Working Group orginator resourceTypeGeneral AIRCRAFT ASOS > Automated Surface Observing System AWOS > Automated Weather Observing System BUOYS PIBAL > Pilot Balloons SATELLITES > SATELLITES Ships WEATHER STATIONS > WEATHER STATIONS U.S. National Aeronautics and Space Administration Global Change Master Directory GCMD 2026-03-19 revision 23.6 NASA Global Change Master Directory orginator Valids List: Platforms DROPSONDES HUMIDITY SENSORS > HUMIDITY SENSORS NEXRAD > NEXt Generation RADar PRESSURE SENSORS > PRESSURE SENSORS RADIOSONDES > RADIOSONDES SSM/I > Special Sensor Microwave/Imager THERMOMETERS > THERMOMETERS WIND PROFILERS > WIND PROFILERS U.S. National Aeronautics and Space Administration Global Change Master Directory GCMD 2026-03-19 revision 23.6 NASA Global Change Master Directory orginator Valids List: Instruments WRF > WRF (Weather Research and Forecasting) Modeling U.S. National Aeronautics and Space Administration Global Change Master Directory GCMD 2026-03-19 revision 23.6 NASA Global Change Master Directory orginator Valids List: Projects EARTH SCIENCE > ATMOSPHERE > ALTITUDE > GEOPOTENTIAL HEIGHT EARTH SCIENCE > ATMOSPHERE > ALTITUDE > STATION HEIGHT EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > ATMOSPHERIC PRESSURE MEASUREMENTS EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > SEA LEVEL PRESSURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > UPPER AIR TEMPERATURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR INDICATORS > DEW POINT TEMPERATURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > UPPER LEVEL WINDS EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE EARTH SCIENCE > OCEANS > OCEAN WINDS > SURFACE WINDS U.S. National Aeronautics and Space Administration Global Change Master Directory GCMD 2026-03-19 revision 23.6 NASA Global Change Master Directory orginator Valids List: Science and Services Keywords Creative Commons Attribution 4.0 International License None eng utf-8 climatologyMeteorologyAtmosphere 1997-04-30 2026-04-03 NSF NCAR Geoscience Data Exchange datahelp@ucar.edu https://gdex.ucar.edu distributor 3559601.478 https://gdex.ucar.edu/datasets/d337000/ https Dataset Description Related Link information https://gdex.ucar.edu/datasets/d337000/dataaccess/ https Data Access Related Link download none asNeeded