POLAR VORTEX GLOBAL WARMING LIFE ON EARTH MAY END NOAA
WHAT IS A POLAR VORTEX
Arctic Vortex - During winter, stratospheric winds (uppermost atmosphere) tend to form a vortex around the North Pole. These polar clouds lead to chemical reactions that affect the chemical form of chlorine in the stratosphere. In certain chemical forms, chlorine can deplete the ozone layer. Note: This is the standard definition version of the Arctic Vortex animation MPEG. Animator: Susan Twardy (HTSI). Scientist: Paul Newman (NASA/GSFC). Writer: Michael Starobin (HTSI).
Arctic sea ice is melting faster than anticipated. Julienne Stroeve of the National Snow and Ice Data Center in Boulder, Colorado explains why and how this will impact global weather patterns.
NASA FOOTAGE OF THE NORTH POLE, BAFFIN ISLAND, ARCTIC CYCLONE, POLAR VORTEX SHOWN IN DETAIL AND TELLING YOU WHAT IT IS AND HOW IT FORMS.
presented by Bill Keefer
A study in 2001 found that stratospheric circulation can have anomalous effects on the weather regimes. A study published in 2004 found a mechanism to explain how the strength of the stratospheric polar vortex influences circulation in the troposphere. Researchers found a statistical correlation between weak polar vortex and outbreaks of severe cold in the Northern Hemisphere, the study was first reported in 2001. A 2007 study focused on the effects of polar cyclones on drought in Australia. In the past years more studies started to investigate a link between polar vortex and jet stream changes and extreme weather, after more pronounced anomalies have been observed. Many studies assess the connection of sea ice decline and responding interactions.
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