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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

NOGAPS Analysis

Model Grid/Scale Period of Record Model Cycle Output Timestep Data Access Links
NOGAPS Analysis Global, 0.5º and 1.0º 02Jan1997 - 09Dec2008 4/day: 00, 06, 12, 18UTC +00hr, analysis only FTP

Data Usage Notes

None

Publication References

None

Miscellaneous Documentation

The readme file lists missing dates in the archive.

Links

Fleet Numerical Meteorology and Oceanography Center (FNMOC)