BoM fiddling Goulburn minimum temperature 2nd July 2017 reveals extent of errors in BoM AWAP temperature maps

Minus 10.4 degrees C was recorded originally at GOULBURN AIRPORT AWS (070330) which was filed by blogger Lance who noticed the BoM rapidly altered this to -10. Jennifer Marohasy blogged on the issue 4 July and passed the info on to a journalist who asked the BoM if they could explain. BoM said they have a “QC” auto function clipping off extremes in case there are errors. And this caused the reset to -10°. JM blogs again on 5 July. This revelation of raw data trimmimg is brand new to many of us who monitor BoM data – but OK thats what the BoM says happened. Jo Nova is also onto the issue. Lance and I checked BoM AWAP maps for NSW daily minimum temperature and noticed the contouring was hugely in error when checked against actual minimums. I have NSW daily minimum temperature maps offline for the 1st July – 2nd July and 3rd July. Just looking at data from the Southern Tablelands region (the white O circles the Goulburn and Canberra localities.) Goulburn is in the wrong contour zone all 3 days. Canberra Airport should be well into the -6 to -9 zone on all 3 days – yet it is always plotted on the boundary of the -3 to -6 and -6 to -9 zones. Always wrong. Taralga about 40km NNE of Goulburn (approx marked white T) read -7° on the 1st & 2nd yet the correct -6 to -9 degrees zone boundary is way too far west on those days. Yass recorded -8.7 on the 2nd yet the contouring has Yass in the next warmer zone. Likewise Cooma on the 3rd should be in the -6 to -9 zone but is shown in the next warmer zone. I expect readers might find errors in other parts of the State – or in other States
With so many errors I wonder what purpose these maps can be fit for. On the issue of the BoM clipping sub -10° readings back to an even -10. Lance mentioned to me these very cold reading from Goulburn Aero Club 70210 in July 1971 – down to -13.9°. Cop that 14 days of frosts in 1971!! Worth noting too the all time coldest Canberra Airport min was -10 on 11 Jul 1971. So setting -10 as an alarm was somewhat odd and without sound scientific foundations – but Hey!! it is the BoM.

Will the NSW Govt ever approve the Shenhua Watermark coal mine?

I think it is a few months off 9 years ago in 2008 that the NSW Govt agreed to sell big Chinese coalminer Shenhua the Watermark orebody near Gunnedah for $300 million. Shenhua was hit with other payments over $350 million then bought land and would have spent over a $Billion by now see blog 2 years ago. Anybody reading Shenhua Watermark news headlines might conclude they were a community welfare org. not a global ranking coal miner.

New Zealand High Court case over climate

Just saw this on Stuff – First-of-its-kind case as student takes Government to court over climate change 23 Jun 2017 – can any Kiwis translate? BP says NZ emissions are 35.2 million t CO2 compared to World 33,432 million t – which I make 0.1053% I doubt if anything the NZ Govt. could do would affect climate. I wonder who is financing the case – is there a risk over costs? Will Govt. run dead?

Global nuclear power numbers from BP

Curious about global nuclear power trends and implications for the uranium market – I extracted the latest from the latest BP Statistical Review of World Energy that now includes 2016. Global electricity generation by fuel type. I had to calculate the fossil fuel column by subtraction.
Click for chart of main global nuclear generating nations. Shows the shutdown by Japan after 2011 earthquake & tsunami – and very slow pace of restarts.

Primarily exposing faulty methodologies behind global temperature trend compilations