Category: Ozone Hole

Antarctic Ozone Depletion Caused By Volcano

Published on by sunshinehours12 Comments

Erebus Volcano and Ozone Depletion

“Erebus volcano eruptions are of the Strombolian type, which volcanic ejecta and gases are known to reach heights of 1–2 km above the volcano summit and, therefore, cannot directly reach the stratosphere (Boichu et al., 2010, 2011; Dibble et al., 2008). However, according to aircraft observations in 1989 at a height of 8 km over Antarctica, the detected aerosol particles were identified as volcanic ejecta of Erebus (Chuan, 1994). Together with HCl and H2SO4 high concentrations in the Antarctic stratosphere, it is indicative of delivery mechanisms of Erebus volcanic gases into the Antarctic stratosphere.

Erebus volcano gas emissions can ascend to the Antarctic stratosphere via high-latitude cyclones which are coupled to the stratospheric polar vortex in cold seasons.”

…

“Thus, for more than 40 years, Erebus volcano, which activity restarted in 1972, has been a natural source of chemical species destroying the Antarctic ozone. The extremely high Erebus volcanic activity in the early 1980s definitely made a major contribution to the increase of the ozone hole along with man-made chlorofluorocarbons. Regular observations of Erebus volcano gas emissions can help to predict the total ozone content dynamics and, therefore, the ozone hole area.”

 

http://www.sciencedirect.com/science/article/pii/S1352231015304246

Ozone Hole Excuse For Record Antarctic Ice Blows Up in “Scientists” Faces

Published on by sunshinehours12 Comments

The NSIDC and many other used the ozone hole as an “excuse” for why Antarctic Sea Ice Extent broke records this year.

“Both warming and ozone loss act to strengthen the circumpolar winds in the south. This is due primarily to persistently cold conditions prevailing on Antarctica year-round, and a cold stratosphere above Antarctica due to the ozone hole. Stronger winds generally act to blow the sea ice outward, slightly increasing the extent”

Guess what, WUWT tells us it was the 2nd smallest ozone hole in 20 years.

“The average area covered by the Antarctic ozone hole this year was the second smallest in the last 20 years, according to data from NASA and National Oceanic and Atmospheric Administration (NOAA) satellites.”

What a shock. The “scientists” excuses for more Antarctic Sea Ice was bogus.