IT'S A DRY HEAT!
Some people swear that the Coachella Valley's dry heat isn't quite as arid as it once was.
“I hear this every year,” said Jim Cornett, a desert ecologist who lives in Palm Springs. “They come up to me and say, ‘Jim, it's way more humid than it used to be.'”
But there's a problem with the widely held theory that the arrival of thousands of lawns and
swimming pools and scores of golf courses have made the valley more humid.
It's just not true.
A Desert Sun analysis of partial weather data in Palm Springs found no upward trend in relative humidity since the 1990s.
The information provided by the National Climatic Data Center also shows that the average annual humidity over the past 15 years is close to the average recorded during two years in the 1940s.
Clearly, some years are slightly more humid than others, but over time the trend line is almost flat, and even falling slightly.
From 1995 to 2009, average annual humidity ranged from 26.01 percent to 38.53 percent.
In 1944 and 1945, the only two years for which historic data is readily available, the average humidity in Palm Springs was between 35 percent and 36 percent.
Humidity could not be tracked in other years because dewpoint data was not kept or has yet to be digitized. But even with the gaps in data, weather experts say they are confident the arrival of misters, sprinklers and swimming pools have not made the valley more muggy.
To read the full article, go to Desert Sun !
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