Niagara Gazette

Web Extra

January 28, 2013

Study: Distant rural areas may feel cities' heat

Niagara Gazette — WASHINGTON — Heat rising up from cities such as New York, Paris and Tokyo might be remotely warming up winters far away in some rural parts of Alaska, Canada, and Siberia, a surprising study theorizes.

In an unusual twist, that same urban heat from buildings and cars may be slightly cooling the autumns in much of the Western United States, Eastern Europe and the Mediterranean, according to the study published Sunday in the scientific journal Nature Climate Change.

Meteorologists long have known that cities are warmer than rural areas, with the heat of buildings and cars, along with asphalt and roofs that absorb heat. That’s called the urban heat island effect and it’s long been thought that the heat stayed close to the cities.

But the study, based on a computer model and the Northern Hemisphere, now suggests the heat does something else, albeit indirectly. It travels about half a mile up into the air and then its energy changes the high-altitude currents in the atmosphere that dictate prevailing weather.

“Basically, it changes the flow.” said Guang Zhang of the Scripps Institution of Oceanography in La Jolla, Calif. He wrote the paper with Aixue Hu at the National Center for Atmospheric Research in Boulder, Colo.

This doesn’t change overall global temperature averages significantly, unlike man-made greenhouse gases that cause global warming. Instead it redistributes some of the heat, the scientists said.

The changes seem to vary with the seasons and by region because of the way air currents flow at different times of the year. During the winter, the jet stream is altered and weakened, keeping cold air closer to the Arctic Circle and from dipping down as sharply, Hu explained.

The computer model showed that parts of Siberia and northwestern Canada may get, on average, an extra 1.4 degrees to 1.8 degrees Fahrenheit (0.8 to 1 degree Celsius) during the winter, which “may not be a bad thing,” Zhang said. The effect isn’t quite as much in northern North Dakota and Minnesota, where temperatures might be about half a degree warmer (0.3 degrees Celsius), and even less along the East Coast.

Text Only | Photo Reprints
Web Extra
  • Screen shot 2014-04-18 at 4.44.15 PM.png Paint, doodle and sketch: 3 apps for art lovers

    In the absence of a palette of watercolors and a sketchpad, these three apps can fill in as your art supplies of choice.

    April 22, 2014 1 Photo

  • VIDEO: Moose charges snowmobile, flees after warning shot

    While snowmobiling in New England, Bob and Janis Powell of Maine were charged by a moose and caught the entire attack on camera.

    April 22, 2014

  • Do White Castle prices tell us anything about the minimum wage?

    The paper looked at how many delicious steamed sliders the minimum wage has been able to purchase over time. The point is that as it notes, in 1981, the $3.35 minimum could buy a whole dozen. Today, at $7.25, it could purchase just 10.

    April 22, 2014

  • Do your genes make you procrastinate?

    Procrastinators, in my experience, like nothing better than explaining away their procrastination: General busyness, fear of failure, and simple laziness are just a handful of the excuses and theories often tossed around. Now researchers from the University of Colorado Boulder have added another option to the list: genetics.

    April 22, 2014

  • NIA Space station art 042114 'Easter Dragon' has special delivery for space station Space station astronauts got a special Easter treat: a cargo ship full of supplies.

    April 20, 2014 1 Photo

  • NIA New planet art 041814 Astronomers spot most Earth-like planet yet Astronomers have discovered what they say is the most Earth-like planet yet detected -- a distant, rocky world that's similar in size to our own and exists in the Goldilocks zone where it's not too hot and not too cold for life.

    April 17, 2014 1 Photo

  • portraitoflotte.jpg VIDEO: From infant to teen in four minutes

    Dutch filmmaker Frans Hofmeester’s time lapse video of his daughter, Lotte — created by filming her every week from her birth until she turned 14 — has become a viral sensation.

    April 17, 2014 1 Photo

  • Screen Shot 2014-04-16 at 12.51.22 PM.png VIDEO: Toddler climbs into vending machine

    A child is safe after climbing into and getting stuck inside a claw crane machine at a Lincoln, Neb., bowling alley Monday.

    April 17, 2014 1 Photo

  • To sleep well, you may need to adjust what you eat and when

    Sleep.  Oh, to sleep.  A good night's sleep is often a struggle for more than half of American adults.  And for occasional insomnia, there are good reasons to avoid using medications, whether over-the-counter or prescription.

    April 17, 2014

  • Low blood-sugar levels make for grousing spouses

    Husbands and wives reported being most unhappy with their spouses when their blood-sugar levels were lowest, usually at night, according to research released this week in the Proceedings of the National Academy of Sciences. Missing a meal, dieting or just being hungry may be the reason, researchers said.

    April 17, 2014

Featured Ads
House Ads
AP Video
US Proposes Pay-for-priority Internet Standards Wife Mourns Chicago Doctor Killed in Afghanistan FDA Proposes Regulations on E-cigarettes Kerry Warns Russia of Expensive New Sanctions Mideast Peace Talks Stall on Hamas Deal Cody Walker Remembers His Late Brother Paul Grieving South Korea Puts Up Yellow Ribbons Raw: Kerry Brings His Dog to Work Raw: Girls Survive Car Crash Into Their Bedroom Three U.S. Doctors Killed by Afghan Security Yankees' Pineda Suspended 10 Games for Pine Tar Colleagues Mourn Death of Doctors in Afghanistan Ukraine Launches Operation Against Insurgents Obama Reassures Japan on China Raw: Car Crashes Into San Antonio Pool Time Magazine Announces Top Influencers List Raw: Angry Relatives Confront SKorea Officials Bigger Riders Means Bigger Horses Out West Yankees Pineda Ejected for Pine Tar Deadly Fungus Killing Bats, Spreading in US
Opinion
House Ads
Night & Day
Twitter News
Follow us on twitter
Hyperlocal Search
Premier Guide
Find a business

Walking Fingers
Maps, Menus, Store hours, Coupons, and more...
Premier Guide
Front page