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Climate change brings premature signs of spring

Our region of Mexico has an delightful abundance of colorful tree varieties—Jacarandas, Primaveras and Tabachines among the most stunning—that augment the many charms to be found here.

pg9aIf you’ve been strolling around the streets of Guadalajara in February and early March, you may have been surprised to see many of these trees starting to bloom.

Although “meteorological spring” officially begins on March 1—before the Spring Equinox, which this year in Mexico is on March 19—up until 30 to 40 years ago the flowering of trees outside of their “regular” season was rare. That has changed thanks to the rise in temperatures worldwide, a phenomenon with significant consequences for plant life.

A study done in Massachusetts and Wisconsin during the 2010 and 2012 warm spells showed that trees blossomed up to 4.1 days earlier for every one degree Celsius rise in average spring temperatures, which translates to 2.3 days for every one degree Fahrenheit.

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