YNN: Reduced polar sea ice could mean weather changes (Extended Interview)
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We’re not setting any new records this year, but sea ice in the Northern Hemisphere is near the thinnest it’s ever been. NASA Cyrosphere Program Manager Tom Wagner said the ice on Earth’s polar ice caps hasn't recovered much from previous melts.
Scientists have been measuring sea ice for decades using satellites. Since the 1980s, Wagner estimates Earth has lost half its sea ice.
That’s important because less sea ice can mean serious weather changes – even in the lower 48 states. You can think of the arctic as the motor in your refrigerator. It drives ocean currents, which are profoundly important to weather patterns. That could mean temperature changes, but also changes to storm tracks in the U.S.
Check out the videos for more, and visit nasa.gov/earth.