2015 was the year of record warmth across south Florida (Fig. 1). November, and especially December, 2015 (Fig. 2) were record-setting months, as well. And, on a daily basis, many scores of records were set (Fig. 3).
What is most impressive is the number of record high minimum temperatures that were reported, easily trumping the number of record highs, by a nearly 4:1 ratio.
Since I live in south Florida, I offer an explanation for this.
Lacking cold frontal passages, with the associated intrusion of cooler and DRIER (lower dew point air), nighttime temperatures simply failed to cool down to “reasonable” levels (water vapor is a “Greenhouse Gas.”). With dew points, even in December, remaining in the 70’s on most mornings, it is no surprise that there were so many high minimum temperatures across the south Florida region.
Even without checking, I suspect that high dew points were also at the root of high minimum temperatures across most of the eastern U.S. last year (and in year’s past).
© 2016 H. Michael Mogil
Originally published 1/2/16