Spring Coming Earlier, Study SaysPublication: National Geographic News Date: January 21, 2009 View Article
Tired of winter? Good news: Spring arrives an average of 1.7 days earlier now than it did in the first half of the 20th century, according to a new study.
Summer, fall, and winter are also starting 1.7 days earlier. And there is less of a temperature difference between winter and summer.
The shifts, which are occurring over land (seasonal shifts are different over oceans), appear to stem from as-yet-to-be determined changes in the physics of the Earth’s climate system.