The global air motion in the northern hemisphere normally takes the form of moving oscillating waves. Now, however, these Arctic, or tropical, waves may remain in place for weeks prolonging and exacerbating that particular weather pattern.
And so it goes.
The scientific career of Raymond N. Johnson, Ph.D., spanned 30 years in research and development as an organic/analytical chemist; he is currently founder and director of the Institute of Climate Studies USA (www.ICSUSA.org). Climate Science is published the first Sunday of every month.