(Many emphases below, boldings, italics, underlining and color are mine … CaptFun)
BY TONY BARBOZA
September 22, 2014, 4:46 p.m.
Naturally occurring changes in winds, not human-caused climate change, are responsible for most of the warming on land and in the sea along the West Coast of North America over the last century, a study has found.
The analysis challenges assumptions that the buildup of greenhouse gases in the atmosphere has been a significant driver of the increase in temperatures observed over many decades in the ocean and along the coastline from Alaska to California.
The difference between analysis and assumptions have to do with:
what IS and has been and is able to be examined (past and present hard data) and
what computer projections and predictions speculate MIGHT be (in the future).
“Changing winds appear to explain a very large fraction of the warming from year to year, decade to decade and the long-term,” said study leader James Johnstone, an independent climatologist who did most of the work when he was at the University of Washington’s Joint Institute for the Study of the Atmosphere and Ocean.
The other two scientific groups involved per the headline callout are:
– the National Oceanic and Atmospheric Administration and
– the Proceedings of the National Academy of Sciences (which published the study).
If global warming had been the most powerful influence on land and sea temperatures, those temperatures would have been different, the study’s authors said.
Most of the warming in the region occurred before 1940, :eek:
when greenhouse gas concentrations were lower and winds were weaker,:eek: the study found.
In contrast, winds have strengthened since 1980 and coastal ocean cooled, :winter: even as the rise in greenhouse gases has accelerated. :hmmm:
Side note: Around 1940 there was a tremendous increase in marching around the globe.
It is hard to prove that the marching is what stopped the pre-1940 warming trend - and of course the marching done then was with other goals in mind - still. There is at least the coincidence.