Data Product Description

In addition to the products described below, selected reanalysis output fields are also put on cdroms. The detailed information about Reanalysis cdroms can be found at Reanalysis CDROMs.

More than 20 different data products are output from the Reanalysis data assimilation, model run, and model forecast. These products are defined in terms of the NCAR archive names, physical variables, resolutions (temporal and spatial), and media storage size. A summary of variables in NCEP/NCAR Reanalysis archive is available in addition to the detailed list of all varibales. The reanalysis datasets stored at NCAR are:

• ds090.0, NCEP Global Reanalysis, Anals, 6-hrly
  
• ds090.1, NCEP Global Reanalysis, 8-Day Forecast, every 5 Days
  
• ds090.2, NCEP Reanalysis Monthly Data Subsets (from DS090.0)
  
• Selected Monthly Means extracted from ds090.0, free by ftp
  

• Data Format -
  • GRIB- Most of the data is in GRIB format, doc, decoder
  • BUFR- Observations are in BUFR format, doc, decoder
  • Cray Binary Format- including sanl, sges, sfcanl, bges, znl.f00, znl.f06 file_types

• Data File_Types
• Analysis-In our ds090.0 dataset
• 6-hour Forecast-In our ds090.0 dataset, including sges, grb2d, grbsf06, pgb.f06, znl.f06 file_types
• 8-day Forecast - In our ds090.1 dataset, including pgb.fhhh, flux.fhhh file_types
• Subsets of 3D,grib,prs - ds090.2 dataset, regrouping all files in 3D,grib,prs file_type
• Monthly Means - In our ds090.2 or ds090.0 datasets, or in our selected monthly means, from 3D,grib,prs file_types

• Various Vertical Coordinates
  • 17 pressure levels: 1000, 925, 850, 700, 600, 500, 400, 300, 250, 200, 150, 100, 70, 50, 30, 20, 10 mb.
    
  • 11 theta levels: 270, 280, 290, 300, 315, 330, 350, 400, 450, 550, 650 K.
    
  • 28 sigma levels: [.9950, .9821, .9644, .9425, .9159, .8838, .8458, .8014, .7508, .6943, .6329, .5681, .5017, .4357, .3720, .3125, .2582, .2101, .1682, .1326, .1028, .0782, .0580, .0418, .0288, .0183, .0101, .0027]
    

• Summary of All Variables
• Detailed List of All Variables