New paper finds .8C global cooling during Dalton Minimum

The Next Grand Minimum

A paper published today in Climate of the Past finds the low solar activity during the Dalton Minimum from 1780-1840 had a significant effect on climate and ocean heat content. According to the authors, “Global and hemispheric mean surface temperatures show a significant dependence on solar irradiance at λ [wavelengths] > 250 nm” and “Reduction of irradiance at λ [wavelengths] > 250 nm leads to a significant (up to 2%) decrease in the ocean heat content (OHC) between 0 and 300 meters in depth, whereas the changes in irradiance at λ [wavelengths] < 250 nm or in energetic particles have virtually no effect.”

The paper shows a ~16 x 10^22 Joule decrease in global ocean heat content from 0 to 100 meters during the Dalton Minimum, which by way of comparison is 3 times larger than the 5 x 10^22 Joule increase in global ocean heat content 0-100 meters over…

View original post 94 more words

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.