Forget the calendar or astronomy, spring starts today . . . sort of

As Forbes (among others) points out, today is not just Super Tuesday — it’s also meteorological spring.

That’s different from astronomical spring, which is more commonly known just as “spring.”

NASA-seasonalvariations

NASA

Unlike astronomical spring, which has to do with the Earth’s position relative to the Sun, “meteorological seasons are related to the annual temperature cycle,” Forbes contributor Marshall Shepherd writes.

In some cases, it’s useful to group the seasons by temperature, which tends to be close but not the same as where the Earth is in its orbit around the sun, according to the National Oceanic and Atmospheric Administration.

Click on either the Forbes link or the NOAA site for more details explanations of meteorological spring. And, c’mon, let’s drop the technicalities, Central Texas banished winter quite some time ago.