Good data, but bad assumption on cause. Decreased solar output due to natural solar long duration cycling is the #1 cause of our temperature changes.
Weaker solar activity usually means weaker solar wind. The solar wind makes it more difficult for cosmic rays to reach Earth. So a declining solar wind output means more cosmic rays enter Earth's atmosphere. According to Svensmark, cosmic rays promote cloud formation. At any rate, they have to include all ocean temps at all depths to get an accurate heat content analysis of the biosphere. Right now the global warming zealots claim the missing heat is located deep down in the depths of the ocean.