January 6, 2018 at 7:22 pm Log in to Reply
Souther Hemisphere Report for 2017, Multiple Records Broken! Some of these background increases were not Fukushima related.
This short animation of Northern and Southern Hemisphere air circulation, shows why we can get detections so far south.
2017 was a record breaking year. Contributing factors to this year's background increases were, Radon from earthquake activity in the Pacific, the Sun going into a quiet period, and from Northern to Southern equatorial air flow break through. These were in addition to the recorded Fukushima increases since 2011. Detailed 2017 monthly reports can be found here, [sccc.org.au]'