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L More Trouble For Earth: A Massive Hole Has Opened up in The Ozone Layer Above The Arctic.

L More Trouble For Earth: A Massive Hole Has Opened up in The Ozone Layer Above The Arctic.

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2 comments

  1. This is sensationalist nonsense.

    They only ripped of half the ESA article:

    https://www.esa.int/Applications/Observing_the_Earth/Copernicus/Sentinel-5P/Unusual_ozone_hole_opens_over_the_Arctic

    >Diego Loyola, from the German Aerospace Center, comments, “The ozone hole we observe over the Arctic this year has a maximum extension of less than 1 million sq km. This is small compared to the Antarctic hole, which can reach a size of around 20 to 25 million sq km with a normal duration of around 3 to 4 months.”

    >Even though both poles endure ozone losses during winter, the Arctic’s ozone depletion tends to be significantly less than Antarctica. The ozone hole is driven by extremely cold temperatures (below -80°C), sunlight, wind fields and substances such as chlorofluorocarbons (CFCs).

    >Arctic temperatures do not usually plummet as low as in Antarctica. However, this year, powerful winds flowing around the North Pole trapped cold air within what is known as the ‘polar vortex’ – a circling whirlpool of stratospheric winds.

    >By the end of the polar winter, the first sunlight over the North Pole initiated this unusually strong ozone depletion – causing the hole to form. However, its size is still small compared to what can usually be observed in the southern hemisphere.

    >Diego says, “Since 14 March, the ozone columns over the Arctic have decreased to what is normally considered ‘ozone hole levels,’ which are less than 220 Dobson Units. We expect the hole to close again during mid-April 2020.”

    I.e. it’s a seasonal thing that happens on occasion based on certain weather patterns.

  2. The more I read the news, the more depressed I become. Seems like everything is going wrong this year

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