North Atlantic Current temperature 0 – 800 metres depth 2004 – 2018 has cooled by 1.0°C to date since the peak in 2006. Additionally to date the North Atlantic Current temperature lost half the heat content it gained from the early 1980s.
So far in 2018 the aa Index has averaged 13.0 and should continue to weaken into the Solar Cycle 24/24 minimum expected in 2020. From the beginning of the aa Index record in 1868 to the end of the Little Ice Age in 1900, the aa Index averaged 15.4. It averaged 20.9 for the Modern Warm Period.