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你觉得昼夜温差只受季节影响吗?其实你每天的忙碌工作也会使昼夜温差加大。周一到周五的昼夜温差要明显大于周六和周日。
Everyone knows how the work week can take a toll on employees, but new
research suggests the five-day slog may have even broader impacts--on
climate.
After examining more than 40 years of temperature data taken from roughly
10,000 surface stations, researchers from the National Oceanic and Atmospheric
Administration and from the University of Reading in the U.K. found that
temperature differences between day and night appear to follow distinct
five-days-on, two-days-off patterns.
The scientists checked the data for all possible natural influences such as
the lunar cycle as well as random variations and found neither to be at play.
The only factor that could be causing the fluctuations was the
Monday-through-Friday grind, they concluded in a recently published report in
the Proceedings of the National Academy of Sciences.
"There is nothing in nature that should cause these data to be different,"
said Piers M de F. Forster, a meteorologist based at the University of Reading,
England, who co-authored the study with NOAA's Susan Solomon. "So whatever the
cause we find has to be something that we're changing, ourselves."
The meteorologists propose the differences in average temperatures between
Saturdays as opposed to Thursdays, for example, may stem from workweek-induced
pollution. Forster explains that during the workweek more people commute and
more factories are in operation. Both contribute to the amount of particle
pollution in the air.
Particles can influence cloud cover, but the kind of particles released
into the atmosphere can lead to different changes, says Forster.
Lighter particles provide a surface for cloud droplets to form. This leads
to an increase in cloud cover, which, in turn, can lead to an increase in
temperature since clouds have an insulating effect. |
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发表于 2016-7-9 23:58:04