Four weeks of climate data: Northern Temperate Region #10

The tenth slice of the Northern Temperate Zone is the eastern United States and Canada with the Great Lakes as the westernmost cut-off point.

The region is very well coverage with weather stations on dry land. The one reporting grid point out in the middle of the Atlantic is Bermuda.

Winter lows showed a downward trend until this century, while the record highs went down then up sharply then down slightly.  Only the median shows stead warming.

The record highs and median have both risen about a degree C over the time span, the record lows less than a half degree.

All three metrics have one step down and two steps up. The record lows have risen more than one degree C, the record highs slightly less than a degree and the median about a half degree.

Steady rise in the median metric, but only about a half degree up from the first to last interval.  The record lows have risen a full degree, the record highs much less than a half degree, but that is only because of one very warm Summer in 1955.

Fall shows a down-up-up pattern in both the record highs and record lows. Both the record high and median temperature half risen a full degree, while the record low is up a remarkable two degrees C.

The steps upward yet again overwhelm the steps downward and we are 95% confident we are looking at a warming trend. The data for getting increasingly warm split 15-9 faster to slower. It takes 17-7 for us to be 95% confident this is warming at an increasing rate.

Tomorrow, we journey into the North Atlantic for Region #11 (South tip of Greenland and the easternmost part of Canada) and Region #12 (Iceland, Ireland, the U.K. and the Iberian peninsula.)