I recently wrote
a short article about the summer of 2012-13 in Australia. It got some reaction from
one person in particular who was claiming the record heat couldn't be attributed to global warming, he postulated that it was caused by the Pacific Decadal Oscillation (eventually having
some comments moved).
Rum Runner's challenge
He also posed a challenge.
Rum Runner wrote: (
October 9, 2014 at 2:26 AM)
@Lou "Why do you think I run this blog?"
A sense of empowerment I suppose. On other people's blogs you'd have your ass handed to you on a plate in an open debate. But here you can just *pop* delete any responses that are a bit too challenging for you.
I assume that by Lou he meant Sou.
Here are the comments Rum Runner would have been talking about.
Now since
Rum Runner regards the prestigious Bulletin of the American Meteorological Society as "political advocacy", and says that therefore doesn't take his information from there; and since he doesn't seem to have recognised as Australians, the scientists who wrote the papers I referred him to, I'll admit it's not much of a challenge.
Still, I thought it worthwhile doing two things. First, reporting some of the latest scientific findings about the weather Australia experienced in 2012 and 2013. And secondly, briefly touching on the Pacific Decadal Oscillation (PDO) - what it is and what is known about it and its effects on weather - in Australia and elsewhere. (I've written about the PDO a couple of times -
here and
here.) This article is about the former. I'll be writing a separate article on the PDO in the near future.
Australia looks forward to still hotter from the extra CO2
There are four papers in the
BAMS supplement relating to the years 2012 and 2013.
The first one is: "The role of anthropogenic forcing in the record 2013 Australia-wide annual and spring temperatures" by Sophie C Lewis and David J Karoly.
What they did was investigate the roles of anthropogenic climate change and natural variability in regard to the record-breaking heat of 2013.