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Dataset: 2026/202605/gdas1.fnl0p25.2026050418.f00.grib2

Catalog: d083003 Aggregation-2026

dataFormat	GRIB-2
authority	edu.ucar.rda
featureType	GRID
dataSize	480518375
id	aggregations/g/d083003/1/d083003-2026/files/2026/202605/gdas1.fnl0p25.2026050418.f00.grib2

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Service	Type	Description
HTTPServer	Data Access	HTTP file download.

Viewers:

Viewer	Type	Description
default_viewer.ipynb	Jupyter Notebook	The TDS default viewer attempts to plot any Variable contained in the Dataset.

Documentation

Keywords

Dates

Creators

Publishers

Geospatial Coverage

Time Coverage

Properties

Description:

Rights: Freely Available
summary: These NCEP FNL (Final) operational global analysis and forecast data are on 0.25-degree by 0.25-degree grids prepared operationally every six hours. This product is from the Global Data Assimilation System (GDAS), which continuously collects observational data from the Global Telecommunications System (GTS), and other sources, for many analyses. The FNLs are made with the same model which NCEP uses in the Global Forecast System (GFS), but the FNLs are prepared about an hour or so after the GFS is initialized. The FNLs are delayed so that more observational data can be used. The GFS is run earlier in support of time critical forecast needs, and uses the FNL from the previous 6 hour cycle as part of its initialization.
summary: The analyses are available on the surface, at 26 mandatory (and other pressure) levels from 1000 millibars to 10 millibars, in the surface boundary layer and at some sigma layers, the tropopause and a few others. Parameters include surface pressure, sea level pressure, geopotential height, temperature, sea surface temperature, soil values, ice cover, relative humidity, u- and v- winds, vertical motion, vorticity and ozone.
summary: The archive time series is continuously extended to a near-current date. It is not maintained in real-time.
NCEP GDAS/FNL 0.25 Degree Global Tropospheric Analyses and Forecast Gridss (d083003)
NCEP Model documentation

Keywords:

: Numerical Weather Prediction
: NCEP
: Model data
: GFS

Dates:

modified : 2026-05-05T18:48:49.948Z

Creators:

DOC/NOAA/NWS/NCEP
- email: http://www.ncep.noaa.gov/mail_liaison.shtml
- http://www.ncep.noaa.gov/

Publishers:

NCAR/RDA
- email: rdahelp@ucar.edu
- http://rda.ucar.edu/

GeospatialCoverage:

Longitude: 0.0 to 359.75 Resolution=0.25 degrees_east
Latitude: -90.0 to 90.0 Resolution=0.25 degrees_north

TimeCoverage:

Start: 2026-01-01T00:00:00Z
End: 2026-08-19T09:00:00Z
Duration: 7.5689 months

Properties:

Originating_or_generating_Center = US National Weather Service, National Centres for Environmental Prediction (NCEP)
Originating_or_generating_Subcenter = 0
GRIB_table_version = 2,1
Type_of_generating_process = Forecast
Analysis_or_forecast_generating_process_identifier_defined_by_originating_centre = Global Forecast System Model T1534 - Forecast hours 00-384 T574 - Forecast hours 00-192 T190 - Forecast hours 204-384
file_format = GRIB-2
Conventions = CF-1.6
history = Read using CDM IOSP GribCollection v3
featureType = GRID

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