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Navy Operational Global Atmospheric Prediction System (NOGAPS)

An animation of NOGAPS salinity at 100m Depth

An animated image of NOGAPS analysis salinity at 100m depth below sea level at 00 UTC each day from August 1, 2006, to August 31, 2006. This image was produced with NASA's Panoply program and ImageMagick.

The Navy Operational Global Atmospheric Prediction System (NOGAPS) provides numerical guidance and products in support of a wide range of Navy oceanographic and atmospheric requirements. The forecast model component of NOGAPS is the heart of the system and represents a multiyear development effort by the scientists of the Naval Oceanographic and Atmospheric Research Laboratory's Atmospheric Directorate.

Through the NOAA National Operational Model Archive and Distribution System (NOMADS), six-hourly data are available in GRIB1 format on regularly spaced latitude-longitude grids at 1-degree and one-half-degree resolutions. Vertical resolution varies from 18 to 28 pressure levels, 34 sea level depths, the surface, and other various levels. Both atmospheric and ocean model variables are available.

Product Types

NOMADS NOGAPS File Naming Convention

nogaps-<subtype>_<grid#>_yyyymmdd_hhmm_fff.grb
nogaps-PPP_GGG_YYYYMMDD_HH00_000.grb

Process (PPP)	Grid (GGG)	Description	x/y Grid	Levels	Time	Variables
008	240	Upper-level atmosphere	lon-lat 360x181	1,2,5hPa, ptop	one/file	TMP, HGT, UGRD, VGRD
017	240	Waves and winds	lon-lat 360x181	surface, other	one/file	various
028	240	Current, water tmp, mixed layer depth	lon-lat 360x181	various	one/file	UOGRD, VOGRD, MIXHT, WTMP
041	240	Soil type, GPH anom., Br.-Vaisala freq.	lon-lat 360x181	various	one/file	SOTYP, 5WAVA, BVF2
043	240	Salinity, water tmp, tmp anom.	lon-lat 360x181	34 sea depths	one/file	SALTY, WTMP, TMPA
058	240	Pressure-level and surface data	lon-lat 360x181	18 pressure, other	one/file	various
058	056	Pressure-level and surface data	lon-lat 720x361	27 pressure, other	one/file	various
078	240	Salinity, water tmp	lon-lat 360x181	34 sea depths	one/file	SALTY, WTMP
110	240	Waves and winds	lon-lat 360x181	surface, other	one/file	various