The Plaindealer has been reporting on the month to month above average temperatures we’ve been experiencing in St. James and across Minnesota since last fall.
Now a report released last week shows Minnesota has been steadily warming for the last century. Furthermore, that rate of warming has been accelerating over the last four decades. The data indicates Minnesota is the third fastest warming state in the lower 48 in the past four decades.
Minnesota’s average temperature has risen by .62 degrees F. during each of the past four decades. So the annual average temperature is nearly 2.5 degrees higher than it was 40 years ago.
In the last 40 years, Arizona has risen the fastest. Michigan and Wisconsin are second and fourth respectively.
The report, released by climatecentral.org concluded, “Global warming isn't uniform....Our state-by-state analysis of warming over the past 100 years shows where it warmed the most and where it warmed the least.
“We found that no matter how much or how little a given state warmed over that 100-year period, the pace of warming in all regions accelerated dramatically starting in the 1970s, coinciding with the time when the effect of greenhouse gases began to overwhelm the other natural and human influences on climate at the global and continental scales.”
The rate of temperature rise in Minnesota is significantly higher than states at the bottom, “Over the past 100 years, the top 10 states warmed 60 times faster than the bottom 10 (0.26°F per decade vs. 0.004°F per decade), when looking at average mean temperatures.”