The data are pacific ocean pseudo stress from Dr. Jay Shriver's
analysis procedure, on a 84x30 grid, one grid/month. This is the same
grid as the FSU subjectively analyzed Pacific pseduo stress product.

The base support for COAPS is the ONR Physical Oceanography Program,
NOAA Office of Global Programs supports our TOGA data work and Dr. Jay
Shriver was supported by a NASA graduate student researchers program
fellowship.

The data are in (meters/sec)**2 with east = positive and north =
positive.

Any tau x and tau y with a value of 999.0 is over land.

The data are on a 2 by 2 degree grid, with 84 points e-w and 30 points
n-s.

       tau x( 1, 1) and tau y( 1, 1) are centered at 124e and 29s 
       tau x( 2, 1)    "     "       are centered at 126e and 29s 
         .
         .
       tau x(83, 1)    "     "       are centered at  72w and 29s 
       tau x(84, 1)    "     "       are centered at  70w and 29s 


       tau x( 1, 2)    "     "       are centered at 124e and 27s 
       tau x( 1, 3)    "     "       are centered at 124e and 25s 
         .
         .
       tau x( 1,29)    "     "       are centered at 124e and 27n 
       tau x( 1,30)    "     "       are centered at 124e and 29n 

The following code is an example of reading the data. Note: the
data in the files are scaled up by a factor of 10, and that using this
format will scale them to the proper numbers.

      program readwd
      dimension taux(84,30),tauy(84,30) 
c
c       read 1 month wind stress grid
c
      read (1,10) month,iyear,taux,tauy 
   10 format (2i5,14f5.1,/(16f5.1)) 
       .
       .
       .
       .
       .
      end 

The climatology file (30-89jfs.cli) has the same layout as the yearly
data files, with the exception that they year variable reflects the
period of the climatology: xxyy, where 19xx is the begining year, and
19yy is the ending year.  To retrieve these values in fortran:

      read (1,10) month,iyear,taux,tauy 
      begin_year=iyear/100+1900
      end_year=mod(iyear,100)+1900

--------------------------------

Reference:

Shriver, Jay F., and J. J. O'Brien, 1993: Interdecadal Variability of 
the Equatorial Pacific Ocean and Atmosphere: 1930-1989. MASIG Technical
Report.

Shriver, Jay F., and J. J. O'Brien, 1995: Low-frequency Variability of 
the Equatorial Pacific Ocean Using a New Pseudostress Dataset: 1930-1989.
J. of Climate, 8, 2762-2786.

======================================================================

James N. Stricherz   
COAPS 
The Florida State University
Tallahassee, FL  32306-2840

Voice: (850) 644-6918
FAX:   (850) 644-4841

Internet: winds@coaps.fsu.edu

Last Revised: 02 Apr 1998