The data are indian ocean wind pseudo stress from ship
    reports on a 90x54 grid, 1 grid/month.

    The analyses are the quick-look product based on reports
    coming in over the GTS (late reports are not used in
    this data set, but are included in our research product,
    based on the National Climatic Data Center (NCDC) surface 
    marine observations data set).

    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
    or indicate where data is not available.

    The data are on a 1 by 1 degree grid.
    There are 90 points e-w and 54 points n-s.

        tau x( 1, 1) and tau y( 1, 1) are centered at 30.5e and 29.5s
        tau x( 2, 1)    "     "       are centered at 31.5e and 29.5s
          .
          .
        tau x(89, 1)    "     "       are centered at 118.5e and 29.5s
        tau x(90, 1)    "     "       are centered at 119.5e and 29.5s

        tau x( 1, 2)    "     "       are centered at 30.5e and 28.5s
        tau x( 1, 3)    "     "       are centered at 30.5e and 27.5s
          .
          .
        tau x( 1,53)    "     "       are centered at 30.5e and 22.5n
        tau x( 1,54)    "     "       are centered at 30.5e and 23.5n

    the following code is an example of reading the data.

       program readwd
       dimension taux(90,54),tauy(90,54)
*
*       read 1 month wind stress grid
*
       read (1,10) month,iyear,taux,tauy
    10 format (2i5,14f5.1,/(16f5.1))
        .
        .
        .
        .
        .
       end 
----------------------------------------------------------------------

REFERENCE: Legler, D. M., I. M. Navon, and J. J. O'Brien, 1989:
Objective Analysis of Pseudostress Over the Indian Ocean Using a
Direct-Minimization Approach. Monthly Weather Review, 117, 709-720.

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

Shawn R. Smith
Center for Ocean-Atmospheric Prediction Studies 
The Florida State University          
Tallahassee, FL  32306-3041         
 
        Internet   : winds@coaps.fsu.edu

Updated: 7 August 2009