Yeah, clear as mud...now how is blocking very clearly linked to fossil fuels? From the your link:<quoted text>
Blocking is not unnatural. The increased frequency of blocking events is, and very clearly linked to the burning of fossil fuels by science.
"This is preliminary research that has yet to be published, and much more work needs to be done before we can confidently link Arctic sea ice loss with an increase in extreme weather, though."
From NOAA :
"In their report, the scientists concluded that the extreme temperatures were caused by the formation of a blocking pattern, a massive high-pressure ridge that halted the normal movement of cooling storms from the west and allowed warm air to flow north from the tropics. Such anomalies are relatively common and the result of natural actions, though the intensity of the one over Russia was highly unusual. Martin Hoerling, co-author of the study and head of the climate attribution team at the Earth System Research Laboratory, said that the frequency and intensity of blocking patterns is not driven primarily by heat and should not increase with the expected rise in global temperatures over the 21st century due to man-made causes."