In fact, the Draft TSD [technical supporting documentation] refers almost exclusively in Section 5 to surface
rather than satellite data....
Recently published research by Barber and colleagues shows that the ice cover was even more fragile at the end of the melt
season than satellite data indicated, with regions of the Beaufort and Chukchi Seas covered by small, rotten ice floes.
Figure 6F shows that the ratio of model trend to observed trends ranges between about 1.25 and 1.73, meaning that the models predict a trend anywhere from 25 to 73 %
larger than the satellite data shows over those 32 years.
But If monthly data are used, no smoothing is carried out, and the increasing ground - based temperature data during 1978 - 96 is assumed to be replaced with the flat trend line shown in the satellite data, the two data sources would actually appear to be quite consistent except that the ground - based data is generally higher
than the satellite data.