DESCRIPTION:

Version 6.1: Global one-degree analyzed ocean temperature grids and error estimates
from surface to 700m from Japan Meteorological Agency.

SOURCE: Data Support Section Dataset ds285.3 and Japan Meteorological Agency.

HISTORY:

The Data Support Section downloaded the JMA's grib files and made them available locally.
The GRIB files contained both the analyzed water temperatures [TW] and the estimated analyzed errors [TW_ERR].
Generally, users will want only the analyzed temperatures. Thus, separate files were made for each variable.

AVAILABILITY:

The data are available for non-commercial use. All netCDF formatted data are available from the NCAR Mass Storage System (MSS).

FORMAT: netCDF

GRID: Regular (360 [lon] x 180 [lat])

TIMES: Analyzed Monthly Means

DATES: January 1945 - December 2003

LEVELS: There are 16 depth levels:

                       
 depth (m) =   0,  10,  20,  30,  50, 
              75, 100, 125, 150, 200, 
             250, 300, 400, 500, 600, 700

FIELDS:

                                       netCDF
        Description                     Name            units
        -------------------------------------------------------------------------
        Temperature Water               TW              C
        Temperature Water Error         TW_ERR          C
MSS PATH:

/CA/MISC/OCN_TEMP/

MSS FILE NAMES:

The MSS file names are similar to the GRIB names.

Generic Name:  temp.yyyy.nc   and  
               temp.err.yyyy.nc   

where
       yyyy is the 4-digit year, 

For example:   temp.1985.nc   
would be the file containing the monthly mean temperatures for 1985.
The following may be used to acquire the files from the MSS:
   
one file:         msrcp  mss:/CA/MISC/OCN_TEMP/temp.1985.nc .
                  msrcp  mss:/CA/MISC/OCN_TEMP/temp.err.1985.nc . 

all files:        msrcp 'mss:/CA/MISC/OCN_TEMP/temp.*.nc'   .
                  msrcp 'mss:/CA/MISC/OCN_TEMP/temp.err.*.nc'   .  

MSS FILE SIZES:

Each file is 49.8MB.

REFERENCES

      Ishii, M., M. Kimoto, K. Sakamoto, and S. Iwasaki (2005):
          Steric Sea Level Changes Estimated From Historical Ocean
          Subserface Temperature and Salinity Analyses.          
          J. Oceanography, Submitted on August 27, 2005.        
     
     
      Ishii, M., A. Shouji, S. Sugimoto, and T. Matsumoto (2005):
          Objective analyses of SST and marine meteorological      
          variables for the 20th century using COADS and the Kobe Collection.
          Int. J. Climatology, 25, 865-879                      
     
     
      Boyer, T. P., et al (2001):                                
          World Ocean Database 2001, Volume 2:                  
          Temporal Distribution of Bathythermograph Profiles.  
          NOAA Atlas NESDIS 43. 119 pp., CD-ROMs,             
          U.S. Government Printing Office, Washington, D.C.  

netCDF metadata:

netcdf temp.2003 {
dimensions:
        time = UNLIMITED ; // (12 currently)
        lat = 180 ;
        lon = 360 ;
        depth = 16 ;
variables:
        double time(time) ;
                time:long_name = "initial time" ;
                time:units = "hours since 1800-01-01 00:00" ;
        int depth(depth) ;
                depth:positive = "down" ;
                depth:long_name = "depth below sea level" ;
                depth:units = "m" ;
        float lat(lat) ;
                lat:long_name = "latitude" ;
                lat:GridType = "Cylindrical Equidistant Projection Grid" ;
                lat:units = "degrees_north" ;
        float lon(lon) ;
                lon:long_name = "longitude" ;
                lon:GridType = "Cylindrical Equidistant Projection Grid" ;
                lon:units = "degrees_east" ;
        int yyyymmdd(time) ;
                yyyymmdd:units = "YYYYMMDD" ;
                yyyymmdd:long_name = "Gregorian date corresponding to time" ;
        float TW(time, depth, lat, lon) ;
                TW:missing_value = -999.f ;
                TW:long_name = "Water temperature" ;
                TW:units = "degC" ;
                TW:_FillValue = -999.f ;

// global attributes:
                :creation_date = "Wed Aug 31 13:33:01 MDT 2005" ;
                :references = "\n",
                        "Ishii, M., M. Kimoto, K. Sakamoto, and S. Iwasaki (2005):\n",
                        "Steric Sea Level Changes Estimated From Historical Ocean \n",
                        "Subserface Temperature and Salinity Analyses.            \n",
                        "J. Oceanography, Submitted on August 27, 2005.           \n",
                        "\n",
                        "Ishii, M., A. Shouji, S. Sugimoto, and T. Matsumoto (2005):\n",
                        " Objective analyses of SST and marine meteorological       \n",
                        "variables for the 20th century using COADS and the         \n",
                        "Kobe Collection.                                           \n",
                        "Int. J. Climatology, 25, 865-879.                          \n",
                        "\n",
                        "Boyer, T. P., et al (2001):                                \n",
                        "World Ocean Database 2001, Volume 2:                       \n",
                        "Temporal Distribution of Bathythermograph Profiles.        \n",
                        "NOAA Atlas NESDIS 43. 119 pp., CD-ROMs,                    \n",
                        "U.S. Government Printing Office, Washington, D.C.          \n",
                        "" ;
                :format_3 = "netCDF" ;
                :html_3 = "//http://www.cgd.ucar.edu/cas/catalog/misc/" ;
                :source_3 = "NCAR: Climate Analysis Section, [NESL/CGD]" ;
                :format_2 = "GRIB" ;
                :html_2 = "http://dss.ucar.edu/datasets/ds285.3/" ;
                :source_2 = "NCAR: Data Support Section" ;
                :format_1 = "GRIB" ;
                :html_1 = "http://cpd1.kishou.go.jp/~ishii/projD/v6.1/" ;
                :source_1 = "Japan Meterological Agency - Tokyo (RSMC)" ;
                :title = "HISTORICAL OCEAN TEMPERATURE ANALYSIS" ;

The corresponding temp.err.2003.nc file would have all the above but the variable on the file would be:

        float TW_ERR(time, depth, lat, lon) ;
                TW_ERR:missing_value = -999.f ;
                TW_ERR:long_name = "Error Estimate" ;
                TW_ERR:units = "degC" ;
                TW_ERR:_FillValue = -999.f ;


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Dennis Shea: shea@ucar.edu