Sunspot Record: Including "Maunder Minimum"

• The Maunder Minimum was associated with the Little Ice Age.
• The Dalton Minimum was associated with significant cooling. This is shown in the following chart.

Winter Severity Index

• The Dalton Minimum was associated with the last serious phase of cooling.
• The Maunder Minimum was associated with even lower temperatures.

Sunspot Record: Cycle 1 to 24

• Note the highs set by Cycle 18, 19, 21 and 22.
• 19 was the highest on record.
• This was associated with the former warming trend.
• The decline has been impressive.
• It is the sharpest decline since the one into Cycle 6 and 7 - called the "Dalton Minimum".
• The trend of declining solar activity has been associated with climate cooling.
• Been going on for millions of years.

• Note the series of lower peaks.
• The April number was 38, down sharply from the March posting at 54.9.
• Cycles 23 and 24 are setting the lowest solar activity since the Dalton Minimum.