The issue Ray alludes to is that in addition to the issue
of many more drifters providing measurements over the last
5-10 years, the measurements are coming in from places where
we didn't have much ship data in the past. For much of the SH
between 40 and 60S the normals are mostly made up as there is
very little ship data there. [Phil Jones]
Waiting for new rules?
40 minutes ago