Well done, Evelynne Roullet (Posted March 1, 2017 at 11:59 …

Comment on Extreme variability: local climate change right now by Alex Nelson.

Well done, Evelynne Roullet (Posted March 1, 2017 at 11:59 am) for a most informative comment; and in the chronology you provided I was most taken by the entry for 1938 about British engineer Guy Callendar who showed from data obtained from numerous weather stations around the world that temperatures had increased compared to the previous century, a finding widely dismissed by meteorologists.
I compare this to the treatment meted out to German meteorologist Alfred Wegener who early last century compiled observations on geological and palaeontological evidence indicating the continents were once linked together. This information was well known but scientists generally accepted the explanation that there had been land-bridges between continents that had subsequently sunk below the oceans. In 1915 Wegener published a book proposing instead that the continents had once been all joined together and subsequently drifted apart.
This theory prompted huge controversy from scientists (especially in Britain, perhaps unsurprisingly) and basically the concept of continental drift was rejected on the basis of insufficient evidence and no explanation of any known force sufficient to move continents. Wegener was regarded as a crackpot, notwithstanding his reputation for research into polar climatalogy; and he perished for his work in Greenland in 1930.
It wasn’t until the mid 1960s when global mapping of the Earth’s ocean floors commenced that evidence came to light supporting the theory of continental drift. Mid-ocean ridges and alternate magnetic banding of seabed rock strata began the revelation of abundant evidence that the world’s land masses are indeed drifting on tectonic plates (incidentally, Australia is the fastest-moving continent on Earth). Today continental drift is completely accepted as a verified fact.
Wegener’s sad experience ought to be a salutory lesson to us all; and for myself it provides an extremely valuable analogy to the populist debate that swirls around the validity of evidence for climate change.
We discount or reject that evidence at our absolute peril.

Alex Nelson Also Commented

Extreme variability: local climate change right now
This is a most important and timely story.
I’m one of those very few non-indigenous individuals who has lived here all my life. I was born in 1963 in the middle of one of the worst droughts on record. Since that time nearly every weather record in Central Australia has been broken, many of them more than once. Ironically, one record still standing since before my arrival is the hottest maximum temperature in the NT, set at Finke a couple of years earlier, but we’ve gotten close on occasion and it’s only a matter of time before that one falls.
One of the major impacts of the 1960s drought that reverberates to this day is the rise to dominance of buffel grass in Central Australia. The drought was a major impetus into extensive research to mitigate the enormous dust storms that frequently smothered Alice Springs, and buffel grass proved to be the ideal panacaea.
When I worked for the Rangeland Management Section at AZRI over a quarter century ago, one of the management problems for pastoral properties was how to deal with the problem of increasing “woody weeds”, especially mulga, witchetty bush and ironwood trees, which suppressed natural pastures and were largely resistant to control by fire, the only economically viable control method.
The increasing dominance of buffel grass across the region has, in my opinion, tipped the balance in favour of a major wildfire risk which, combined with the increasing severity of weather events, now poses an extreme hazard for us all in Central Australia. There have already been several serious wildfires in the vicinity of Alice Springs following above-average rainfall periods since the turn of the century, which I think are indicative of much worse to come.


Recent Comments by Alex Nelson

Centre of attention: Glory days of Anzac Oval in the 1950s
@ Peter Bassett (Posted February 19, 2019 at 7:33 pm): Appreciate your comment, especially about the old high school, Peter.
Contrary to what has been reported in the some media, the old school building is a very well constructed building with enormous inherent heritage value.
There has been – and is – a deliberately false and misleading campaign initiated by the NT Government, amplified by vested interests through a complicit and compliant print media, to denigrate the worth and value of that old education complex.


From mud, dust to grass: The beginning of Anzac Oval
@ Dr Ongo (Posted February 14, 2019 at 8:08 pm): You raise an interesting point; however, your observation applies equally well to other listed heritage sites, eg. such places as the Alice Springs Telegraph Station, Alice Springs Heritage Precinct (including Stuart Park, old hospital, old Alice Springs Gaol, and several houses in Hartley and Bath streets), and the Hermannsburg Historic Precinct.
There are histories, stories or law applicable to all of these places since time immemorial but other than to acknowledge previous Aboriginal occupation or use of such sites, I’m not qualified or knowledgeable enough to comment about them.
In regard to “untyeye that once grew there” at the Anzac Oval site (referring to corkwood trees – Hakea divaricata), only one still survives just inside the boundary near the Senior Citizens Club. It’s the same tree on the right of the photo, framing the new school, taken by Prue Crouch’s father in the early 1950s.
The heritage statement for the nomination of Anzac Oval does state: “The Anzac Oval Precinct contains several sacred sites.”
Thanks for your comment.

 

Corkwood


Home owner bonus: New build sector bleak, says CLP
The situation generally in the Northern Territory is giving every indication that it’s rapidly spiralling out of control.
I suspect the NT Government’s reactions are too little, too late; and this latest scheme will likely end up being home owner bogus rather than bonus.


West Macs fire mitigation critically inadequate: Scientist
Such a shame, Steve, that we’re unable to harness your sprays to put the wildfires out.


Government fails to protect major tourism asset
My recollection is that the major wildfire years in the earliest period of this century were 2002-03, and again in 2011. Both of those periods closely followed years of exceptionally high rainfall (2000-01 and 2010 respectively).
This isn’t unusual in itself – there were significant wildfire years in 1968 (following the breaking of the drought in 1966) and in 1975 (following 1973-4, the wettest period on record in Alice Springs).
What’s different now is that this major wildfire event has occurred after a very dry year, with a record set at Alice Springs in 2018 for the longest period without rain being recorded, although (as I recall) this wasn’t the case further west of town.
In the last few years, I’ve had the opportunity to travel west and east of Alice Springs a number of times and also to fly frequently to Darwin and back with clear views of the area around town.
The clear impression I’ve gained on every trip is the extent and dominance of the spread of buffel grass in the ranges.
It’s like a blanket hugging the ground as far as the eye can see. It’s spread is overwhelming, and the ecology of this region is forever changed.
There are often comments about the need for protecting Alice Springs from major floods but that’s the least of our worries.
It is major wildfire that poses the most serious risk to our town, and the recent disaster in the West Macs demonstrates this risk can occur at any time.


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