Data described in Reynolds, R.W., N.A. Rayner, T.M.
Smith, D.C. Stokes, and W. Wang, 2002: An Improved In Situ and Satellite
SST Analysis for Climate, J. Climate
Created 10/2002 by RHS
N.B. The land values in this ice concentration data set have been set to the missing value of 32767. The land values vary with time.