January 2014 Southern Hemisphere Background Radiation Level
Monitoring Station Location
January 2014 month average background radiation level was 41 % above
the pre-Fukushima 4 year average. This is better than the recorded
January 2013, 52% above average, and January 2012, 43% above
average. This suggests at this location, the Southern hemisphere
increasing background levels have stabilized. It means it hasn't
gotten worse, but it is still higher than pre-Fukushima levels for
this time of the year. The average 4 year per Fukushima Nuclear
disaster local background radiation level recorded from 2007 to
2011, was 0.10 uSv/hr.
The spike in this chart around August and September 2008 is mystery.
It may have been caused by the operator experimenting.
More Technical Information and Charts
This short animation of Northern, and
Southern Hemisphere air circulation, shows why we can get
detections so far south.
Comparing the month and day average, (Charts are providede
a. There is definitely a seasonal variation in local background
levels. A seasonal variation very clearly shows in all the monthly
b. The considerable variation in month averages indicates there is
more Northern Hemisphere to Southern Hemisphere air flow break
through in the warmer summer months, than in the colder winter
c. January 2012 day average chart shows whatever was in the air was
not mixed as well as in 2013 and 2014. This can be seen by the
dramatic swings in the day averages for 2012, when you compared with
the day average charts of 2013 and 2014.
d. Something major must have occurred at Fukushima in late 2012 and
early 2013, to have caused such a dramatic month average increase
for January 2013. Note that for January 2013 most of the month was
dry, drought conditions here. The drought was broken by a
significant rain event around the 26th January.
January Day Average Year Chart Comparisons from 2012 to 2014
Explanation of the alert level colour coding in the charts.
January Month Average Year Chart Comparisons from 2012 to 2014
More detailed local background Radiation level information can be found here.
Disclaimer: This is an amateur volunteer run service.
Human error can provide incorrect information, and equipment malfunction
can produce false readings. Do not rely on, or take action upon
information presented on this web site, without further research. Views
expressed in the pages or images on the SCCC Inc., site are the
personal opinions of the relevant writers, and are not necessarily
representative of those of SCCC Inc.