It comes down to what every scientist knows too well — analyzing data
collected by different methods, and at different times, is a tricky business because some methods of collecting ocean surface temperatures are more accurate than others.
Not exact matches
According to the report's methodological appendix, the
method by which the U.S. information was
collected was
different (and clearly less reliable) than how it was
collected from all of the other countries.
We are trying to apply new
methods and are joined
by young scientists from many
different disciplines who help us squeeze more information out of the samples we
collect.