In studying grand minimum climate change I have been watching for the unusual freeze events, both in late spring and early fall and indicators of the coming weather changes resulting from a much quieter Sun. But some times the event creep much slowly, initially as just colder days, that become colder weeks and eventually months. We do not really notice, it is just weather, until years go by and the change becomes the normal.
Here is an example of a monthly change reported by P. Gosselin at the No Tricks Zone:
The English language Swedish online news site The Local.se/ reports on how the weather in Sweden has been so far during the month of June: wet & cold.
According to the Swedish Meteorological and Hydrological Institute (SMHI), temperatures have been well below average in June, at just 13.3 degrees Celsius. Normal is 15.2°C.
On June 2, the temperature in Stockholm rose only to 6°C, the coldest high in 84 years, read more here. Earlier in the month one town recorded a temperature of 6°C below zero – the coldest June temperature in Sweden in 20 years. Snow even blanketed parts of northern Sweden.
Normally in the month of June, the mercury rises to 25°C or more on just days 5 days on average. This June the mercury never reached that mark. In fact it didn’t even reach the 22°C mark. The high temperature for June in Stockholm was only 21.6°C. This is only the second time the temperature has failed to reach 25°C in June in 92 years.
This only becomes significant if the trend continues for several years in a row, and even more so if it continues for 20 plus years, with some variation above and below the trend line. The climate change associated with grand minimums comes slowly on little paws, with some violent swipes outside the norm to remind us that change is happening. We will know it happened, when the little fellow in the picture above comes to bash down the door.