NCEP/NCAR Reanalysis (R1) Pressure Level Monthly Means

SOURCE: Data Support Section Dataset ds090.0

DATA DESCRIPTION: NCEP/NCAR R1 reanalysis pressure level monthly data, regridded from 2.5 degree grid.

UPDATED THROUGH: Dec 2009

FORMAT: NetCDF (Jan 1948 - Dec 1957, Jan 1979-Dec 2009) ; CCM2 History Tape (Jan 1958 - Dec 1996)

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

TIMES: One mean per month.

CURRENT HOLDINGS: Jan 1948 - Dec 2009

FIELDS:

Description Name Units Levels Notes
Zonal wind component U m s-1 all  
Meridional wind component V m s-1 all  
Vertical pressure velocity OMEGA Pa s-1 lowest 12*  
Geopotential height ZA m all  
Temperature T K all  
Relative humidity RH % lowest 8* 0<=RH<=100
Specific humidity Q kg kg-1 lowest 8* Q>=0
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

MSS Directory: /CA/NMC/PRESS/ (Jan 1948 - Dec 1996)

/CA/NMC/PRESS/UPDATE (Jan 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.


Related Software: Code to convert CCM format to NetCDF (ccm2nc)


Other Products related to this Dataset: