Australia not as protected from UV radiation as we used to be.
From Frances Rowe, 15 Jan 15 The following may have been broadcast via media outlets, however if so, I missed it:
” A pulse of extreme UV radiation from the flare ionized Earth’s upper atmosphere over Australia and the Indian Ocean. Mariners and ham radio operators may have noticed a brief communications blackout at frequencies below about 10 MHz. This map from NOAA shows the affected region:..”http://www.weather.com
(see 13 January 2014)
The intensity of this radiation is referred to as extreme; what cosmic rays may be involved are not indicated. It may be that we are not as protected as we once were.
http://www.huffingtonpost.com/2012/11/02/magnetosphere-leak-earth-magnetic_n_2058880.html

Hi Cristina,
the website shown is incorrect, the link is http://www.spaceweather.com, not as shown,( my mistake), date, i.e. 13-01-2015, will need to be entered in archive (top right hand corner). The extreme ionizing radiation is shown to be directly over Australia on 13th.
‘”These high-energy particles arriving from outer space are mainly (89%) protons – nuclei of hydrogen, the lightest and most common element in the universe – but they also include nuclei of helium (10%) and heavier nuclei (1%), all the way up to uranium. When they arrive at Earth, they collide with the nuclei of atoms in the upper atmosphere, creating more particles, mainly pions.” http://home.web.cern.ch/about/physics/cosmic-rays-particles-outer-space
It would be interesting to know at what altitude the collision between the cosmic particles and the ‘nuclei of atoms’ occur.
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