SMRs and AMRs

Wednesday, July 20, 2011

Sizzle Factor for a Restless Climate

By HEIDI CULLEN
NYT

ENJOYING the heat wave?

The answer is probably no if you live in Abilene, Tex., where temperatures have been at or above 100 degrees for 40 days this summer. It’s been a little cooler in Savannah, Ga., where the mercury hit 90 or more for 56 days in a row. Texas, New Mexico and Oklahoma are coping with their driest nine-month stretch since 1895.

Yes, it has been a very hot summer after one of the most extreme-weather springs on record. It’s time to face the fact that the weather isn’t what it used to be.

Every 10 years, the National Oceanic and Atmospheric Administration recalculates what it calls climate “normals,” 30-year averages of temperature and precipitation for about 7,500 locations across the United States. The latest numbers, released earlier this month, show that the climate of the last 10 years was about 1.5 degrees warmer than the climate of the 1970s, and the warmest since the first decade of the last century. Temperatures were, on average, 0.5 degrees warmer from 1981 to 2010 than they were from 1971 to 2000, and the average annual temperatures for all of the lower 48 states have gone up.

For climate geeks like me, the new normals offer a fascinating and disturbing snapshot of a restless climate. The numbers don’t take sides or point fingers. They acknowledge both powerful natural climate fluctuations as well as the steady drumbeat of warming caused by roughly seven billion people trying to live and prosper on a small planet, emitting heat-trapping greenhouse gases in the process.

(More here.)

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