Climate Change and our Land of Fire, Flood and Drought.

**AK83** · 19th December 2019, 07:05 AM

Originally Posted by Saitch

Thank God it's an average only as my observations show yesterday's peak was the lowest temp we have had in the last 5 days, at 35°.....
Everyone is calling for preventative measures against what would appear to be, at the moment, an hypothetical apocalypse.

Yeah, these records are totally meaningless in every sense of the word.

Modern data(ie. their ability to 'average') is far more prevalent now, then say in the early 1900s, or late 1800's.

eg. pre 1940, there was no data for Oodnadatta, as the records only started in this year for that location.
And they close many old sites and relocate them to alternative grounds(eg. that I know of Melb regional office close in 2015, and now Melb is measured at a new site since 2013)

So they make claims that Melb will cop a 'new record' high temp for December this coming Friday(expected 43), which is technically correct if you just look at the data that's easily available.
But this claim is only true if you only take into consideration that the data is only available from 2013, unless you specifically find the hard to locate tick box that reveals the closed station too.
The closed station data shows that Melbourne has had many >42°C days in December since the 1850's.
That I've counted, 3 previous instances of 43°C or higher in Dec in Melb, all pre 1900's.
5 instances of 42.9°C or more in Melb in Dec, only 1 of which was in this modern, climate change era.

Records come and go, and are open to 'interpretation' as one sees fit to create them based on the specific data they want to use.

But as a record breaking event, this supposed average temp across Aus as a whole is useless data. The level of precision of collating that data is higher now than previously.

**101RRS** · 19th December 2019, 10:36 AM

Originally Posted by AK83

But as a record breaking event, this supposed average temp across Aus as a whole is useless data. The level of precision of collating that data is higher now than previously.

As I know nothing about all this - I would believe the BOM statisticians over you Arthur.

If someone with some authority challenges the BOM on these stats I might take note but otherwise no.

**vnx205** · 19th December 2019, 12:28 PM

Originally Posted by AK83

.... .....
Modern data(ie. their ability to 'average') is far more prevalent now, then say in the early 1900s, or late 1800's.
.... .... ....
The level of precision of collating that data is higher now than previously.

Am I the only who thinks that those two statements might mean that there could be errors in some of the old data?

If the old data is inaccurate then I suppose it needs to be ignored or adjusted to reduce the possibility of some error.

On the other hand, perhaps thousands of climate scientists and meteorologists working independently in countries all around the world have decided to fudge all the data.

The detailed explanation on the BOM website about how data used to be collected, how it is now collected, and the evidence that strongly suggests that some of the old data is suspect, offers another possible reason.

**Tombie** · 19th December 2019, 12:34 PM

Just a normal December day here...

Climate Change and our Land of Fire, Flood and Drought.

(Just a light hearted post)

**JDNSW** · 19th December 2019, 12:52 PM

Only 44.2 here!

**vnx205** · 19th December 2019, 01:04 PM

24.6 in Moruya; the same as on my verandah in Tuross Head.

Because of a light breeze, it feels like 23.9.

However on Saturday, it is forecast to reach 31. How will I survive?

**Saitch** · 19th December 2019, 02:27 PM

Let's see know.Tombie has 48° and vnx205 has 24.6° therefore the average is 36.3°.

Quite a normal Chrissie temp, what!

**PhilipA** · 19th December 2019, 02:32 PM

My thermometer shows 29C in the kitchen with the oven on preparing a leg of Ham.(at 3.30Pm on19/12/2019)

It feels about the same outside so much so that I have now opened the doors.

So much for 36C forecast for the nearby The Entrance.

Norah head a little North 28.7 max 34.4.
The change has not arrived here yet.

Regards PhilipA.

DiscoMick · 19th December 2019, 07:09 PM

New record average hottest day - for second day in a row, based on recordings at over 700 weather stations nationwide.

Australia records hottest day ever - one day after previous record

Australia records hottest day ever - one day after previous record | Australia news | The Guardian

**Eevo** · 19th December 2019, 10:13 PM

having hot days in summer. never have we experienced this before.

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