NCEP FNL Operational Model Global Tropospheric Analyses, continuing from July 1999

| DOI: 10.5065/D6M043C6

These NCEP FNL (Final) Operational Global Analysis data are on 1-degree by 1-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.

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.

The archive time series is continuously extended to a near-current date. It is not maintained in real-time.

Temporal Range:
1999-07-30 18:00 +0000 to 2023-02-07 06:00 +0000 (Entire dataset) Period details by dataset product
Air Temperature Cloud Liquid Water/Ice Convection Evaporation
Geopotential Height Humidity Hydrostatic Pressure Ice Extent
Land Use/Land Cover Classification Planetary Boundary Layer Height Potential Temperature Sea Level Pressure
Sea Surface Temperature Skin Temperature Snow Water Equivalent Soil Moisture/Water Content
Soil Temperature Surface Pressure Surface Winds Terrain Elevation
Total Precipitable Water Tropopause Tropospheric Ozone Upper Air Temperature
Upper Level Winds Vertical Wind Velocity/Speed Vorticity
GRIB parameter table: HTML | XML
GRIB2 parameter table: HTML | XML
Vertical Levels:
See the detailed metadata for level information.
Data Types:
Spatial Coverage:
Longitude Range: Westernmost=180W Easternmost=180E
Latitude Range: Southernmost=90S Northernmost=90N Detailed coverage information
Data Contributors:
National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce
Total Volume:
714.67 GB (Entire dataset) Volume details by dataset product
Data Formats:
Related RDA Datasets:
NCEP FNL Operational Model Global Tropospheric Analyses, July 1976 to April 1997
NCEP FNL Operational Model Global Tropospheric Analyses, April 1997 through June 2007
NCEP GDAS/FNL 0.25 Degree Global Tropospheric Analyses and Forecast Grids
Historical Unidata Internet Data Distribution (IDD) Gridded Model Data
NCEP ADP Global Upper Air Observational Weather Data, October 1999 - continuing
NCEP ADP ETA / NAM Upper Air Observation Subsets
NCEP ADP Global Surface Observational Weather Data, October 1999 - continuing
NCEP GDAS Satellite Data 2004-continuing
More Details:
View a more detailed summary of the data, including specific date ranges and locations by parameter
Metadata Record:
Data License:
Citation counts are compiled through information provided by publicly-accessible APIs according to the guidelines developed through the project. If journals do not provide citation information to these publicly-accessible services, then this citation information will not be included in RDA citation counts. Additionally citations that include dataset DOIs are the only types included in these counts, so legacy citations without DOIs, references found in publication acknowledgements, or references to a related publication that describes a dataset will not be included in these counts.