NCEP ADP Global Upper Air Observational Weather Data are composed of global upper air weather reports operationally collected by the National Centers for Environmental Prediction (NCEP).
These include radiosondes, pibals and aircraft reports from the Global
Telecommunications System (GTS), and satellite data from the National
Environmental Satellite Data and Information Service (NESDIS). The
reports can include pressure, geopotential height, air temperature, dew point
temperature, wind direction and speed. Data may be available at up to 20 mandatory levels from 1000 millibars to 1 millibar, plus a few significant levels. Report intervals range from hourly to 12 hourly. These data are the primary input to the NCEP Global Data Assimilation System (GDAS), which is used to create the NCEP Final Tropospheric Analyses (FNL).
Full daily data can be downloaded in BUFR or LITTLE_R format. Spatial subsets decoded into ASCII can also be selected by latitude/longitude or station ID.
Temporal Range:
1999-09-30 to 2024-11-02
(Entire dataset)
Period details by dataset productPeriod details by dataset product1999-09-30 to 2024-11-02 (GDAS ADPUPA Upper Air Observations (sonde data only))1999-09-30 to 2024-10-31 (GDAS Upper Air Observations (daily tar files))1999-09-30 to 2020-03-12 (GDAS Upper Air Observations (little_r format) for use with MM5 and WRF data ingest software)
19.62 TB
(Entire dataset)
Volume details by dataset productVolume details by dataset productGDAS Upper Air Observations (daily tar files): 1.63 TBGDAS ADPUPA Upper Air Observations (sonde data only): 19.85 GBGDAS Upper Air Observations (little_r format) for use with MM5 and WRF data ingest software: 17.97 TB
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