Among those skeptics is Tim Kelley, who has issued weather forecasts on New England Cable News since 1992. He describes himself as a “student of climate change,” but says his experience with the variability of computer models has made him skeptical that anyone can predict how greenhouse gases will change the environment in the coming decades. “How can their computer models be better than ours?” he said. “We look at computer projections all the time, and we know how off they can be.” Kelley acknowledges the climate is changing, but like many skeptics he questions whether rising levels of carbon dioxide in the atmosphere are the reason. He believes most of the changes are natural, not man-made. “I’m much less alarmed by global warming than most people,” he said. “I’d rather it be warmer.”
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They observe changes in the atmosphere like astronomers study the stars, analyzing everything from air pressure to water vapor and poring over computer models to arrive at a forecast.
But for all their scrutiny of weather data, many meteorologists part ways with their colleagues — climate scientists who study longer atmospheric trends — in one crucial respect: whether human activity is causing climate change.
Meteorologists are more skeptical than climate scientists, and that division was underscored by the recent departure of Mish Michaels from WGBH News.
