the contents of pvnmldfluxna.mat are
  area             1x88                   704  double              
  lat              1x180                 1440  double              
  pvbfinmld      365x1                   2920  double              
  pvwsinmld      365x1                   2920  double              
  tst              4-D              467667200  double              
  vlat             1x88                   704  double              
  vlon             1x91                   728  double              
  xfac             1x1                      8  double              


area is an area area for the north atlantic
lat is the latitude, lat(vlat) is for the north atlantic
pvbfinmld is the climatological buoyant pv flux based on
	nmld mixed layer depth climatology
pvwsinmld is the climatological stress pv flux based on
	nmld mixed layer depth climatology - should match
	the other stress climatology
tst is the north atlantic sst data
xfac is the conversion factor to W/m^2.