NCEP/NCAR Reanalysis Pressure Level Monthly Means

here is the updated information. 
SOURCE: Data Support Section Dataset ds090.0
	File = grib
	2.5 degree grid

FORMAT: NetCDF (January 1948 - December 1957) 
        CCM2 History Tape (January 1958 - December 1996)
        NetCDF (January 1979 - current)

GRID:   Global - T63 Gaussian (192 x 96)

LEVELS: (Pressure)
	1000,925,850,700,600,500,400,300,250,200,150,100,70,50,30,20,10 mb

FIELDS: Description                     Name    Units   Levels
        ---------------------------------------------------------
	Zonal Wind Component		U	m/s	all 17 
	Meridional Wind Component	V	m/s	all 17
	Vertical Pressure Velocity	OMEGA	Pa/s	lower 12*
	Geopotential Height		ZA	m	all 17
	Temperature			T	K	all 17
	Relative Humidity		RH	percent	lower 8*
	Specific Humidity		Q	kg/kg	lower 8*
	Surface Pressure		PS	Pa	surface

  Plus the following variances and covariances:
        UUP,VVP,WWP,ZZP,TTP,RHP,QQP,PSP
        UVP,UWP,VWP,UTP,VTP,UQP,VQP,WQP,WTP

  * Remaining (higher) levels are filled with 1.E36

TIMES:  One mean per month.

MSS Directory: /CA/NMC/PRESS/	       		(January 1948 - December 1996)
	       /CA/NMC/PRESS/UPDATE        (January 1997 and later)

Filename: 
	  
	For files in /CA/NMC/PRESS:

          CCM2 files:
          T63yymmM  where yy = year and mm = month
          One month per volume.
          e.g. T638501M for January 1985.
	  
	  NetCDF files:
	  T63yyyymmM.nc  where yyyy = year and mm = month
          One month per volume.
          e.g. T63198201M.nc for January 1982.

        For files in /CA/NMC/PRESS/UPDATE:
          
	  T63yyyymmM.nc  where yyyy = year and mm = month
          One month per volume.
          e.g. T63199701M.nc for January 1997.



	Update: Due to a problem with the TOVS data in the NCEP/NCAR Reanalyses, 
	Mar 1997 through Feb 2001 have been re-run and released to NCAR. 


	Update: Data from March 2001 through December
	2002 has been created.


        Update: Data from January 2003 through December
        2003 has been created.


        Update: Data from January 2004 through December
        2004 has been created.


        Update: Data from January 2005 through December
        2005 has been created.


        Update Dec 2007: Data from January 2006 through December
        2006 has been created.


Current holdings: January 1948 - December 2006

Related Software:

NCEP/NCAR Global Reanalysis Project
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