Most of the sources those with a political agenda use, including Al Gore's book, end in the early 2000's when we were still in a major warming cycle. There is VERY LITTLE new work done yet including the last two years.
Another great ploy Gore's cited "statistics" used was to cherry pick reporting sites that prior the 1970's were largely in rural areas, like Houston's Intercontinental Airport (now known as Bush Intercontinental....), that during the reporting period became highly urbanized, gradually migrating inside the Urban Heat Island. They of course, ignore many permanently rural recording sites.
Right....
You do know that over 50% of the North Pole melted in the last 50 years, don't you?