Forums > General Discussion   Shooting the breeze...

Global Warming has hit Perth

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Created by Pcdefender > 9 months ago, 24 Jun 2023
Pcdefender
WA, 1492 posts
24 Jun 2023 1:07AM
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For the last 2 months it seems Perth has been freezing.

May and June have average max temperatures of 22.3 and 19.5 yet nearly every day it seems the max has been around 17C.

No let up in sight for the next week also.

Global Warming it seems also causes significant cooling.

We should all do our part to reduce our carbon emissions.

15 minute cities with carbon credits points for each individual. Seems like a good idea on the face of it.

Any takers?

Any concerns?

bjw
QLD, 3623 posts
24 Jun 2023 7:15AM
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May and June have average max temperatures of 22.3 and 19.5 yet nearly every day it seems the max has been around 17C.

Any concerns?


People of Melbourne would be really confused of your first world weather complaint.

bjw
QLD, 3623 posts
24 Jun 2023 7:17AM
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Average stats
www.bom.gov.au/climate/averages/tables/cw_009225.shtml

Buster fin
WA, 2577 posts
24 Jun 2023 7:13AM
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Pcdefender said..


15 minute cities with carbon credits points for each individual.


Huh?

decrepit
WA, 12167 posts
24 Jun 2023 8:54AM
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Buster fin said..

Huh?


Don't worry about PC. He thinks global warming should mean everything gets hotter. He doesn't understand that can some times mean things get colder.
The reversal of warming ocean currents, caused by ice at the poles melting is an example.

FormulaNova
WA, 14738 posts
24 Jun 2023 12:08PM
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Pcdefender said..
For the last 2 months it seems Perth has been freezing.

May and June have average max temperatures of 22.3 and 19.5 yet nearly every day it seems the max has been around 17C.

No let up in sight for the next week also.

Global Warming it seems also causes significant cooling.

We should all do our part to reduce our carbon emissions.

15 minute cities with carbon credits points for each individual. Seems like a good idea on the face of it.

Any takers?

Any concerns?


I have to say I am impressed. Well done.

Not a meme and all your own words. Congrats.

remery
WA, 2806 posts
24 Jun 2023 12:28PM
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Pcdefender said..
For the last 2 months it seems Perth has been freezing.
May and June have average max temperatures of 22.3 and 19.5 yet nearly every day it seems the max has been around 17C.



The mean temp for May 2023 was 22.4.

gs12
WA, 399 posts
24 Jun 2023 1:02PM
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Pcdefender said..

Any concerns?


yep - people who don't know basic physics facts, such as freezing temperature of water, debating global warming on the internet ...

jn1
2454 posts
24 Jun 2023 3:05PM
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decrepit said..

Buster fin said..

Huh?



Don't worry about PC. He thinks global warming should mean everything gets hotter. He doesn't understand that can some times mean things get colder.
The reversal of warming ocean currents, caused by ice at the poles melting is an example.

Unfortunately, the scientists that coined the term are very poor marketers IMO, and have confused the public. They should have called it Global Climate Instability, because this is the effect people see in real life.

LastSupper
VIC, 364 posts
24 Jun 2023 7:27PM
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10 thousand years ago my ancestors walked to Tasmania ! Think about it

FormulaNova
WA, 14738 posts
24 Jun 2023 9:40PM
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LastSupper said..
10 thousand years ago my ancestors walked to Tasmania ! Think about it


All of them, or just some of them?

Where were the rest of them at this time?

Is this factual or just a guess? Even with lower sea levels some places were still islands. I can understand boating across from New Guinea and the rest of Asia, but was there a land bridge to Tasmania at that time?

It is interesting to see Polynesian history and how they spread out across islands that you would assume are bloody impossible to find in small boats, but they obviously did it.

ratz
WA, 473 posts
24 Jun 2023 10:15PM
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i thought your tin foil hat kept you warm pete,

Pcdefender
WA, 1492 posts
24 Jun 2023 10:54PM
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All their predictions of sea level rise from the nineties have turned out to be complete horse ....

Never mind the flock keep still believing

remery
WA, 2806 posts
25 Jun 2023 12:11PM
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Pcdefender
WA, 1492 posts
25 Jun 2023 12:41PM
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See no sea level rise.

Observation is no longer evidence.

All their previous predictions in sea level rise from the nineties have proved to be hogwash so why are to trust their future predictions?

According to the B O M Perth the average for this month is 1.7 C lower up until the 24th.

It looks like by the end of this month it will be over 2 C looking at the forecast for the coming week.

The earth cooling is also global warming

remery
WA, 2806 posts
25 Jun 2023 1:26PM
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So, having seen actual data, you retract your comment that last month was cooler than average?

remery
WA, 2806 posts
25 Jun 2023 1:45PM
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"Decile 9 maximum (or minimum) temperature (?C)
Monthly decile 9 (90th percentile) of maximum or minimum air temperature. The annual decile value must be calculated from yearly data, and cannot be obtained by adding together the monthly deciles. Decile values are used to give an indication of the spread of the observations over the period of record; in this case, daily observations within a month. To determine decile 9 of a series of observations, the data are first arranged in order from lowest to highest, and then divided into 10 equal groups. Decile 9 is the value at the top of the 9th grouping. Over the long term about one day in ten can be expected to have a (maximum or minimum) temperature exceed the decile 9 value."

Rango
WA, 708 posts
25 Jun 2023 6:39PM
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Pcdefender said..
See no sea level rise.

Observation is no longer evidence.

All their previous predictions in sea level rise from the nineties have proved to be hogwash so why are to trust their future predictions?

According to the B O M Perth the average for this month is 1.7 C lower up until the 24th.

It looks like by the end of this month it will be over 2 C looking at the forecast for the coming week.

The earth cooling is also global warming


The prediction from the catastrophist Hansen in 88 was 4 feet of sea level rise by mid century and up to 9 degrees f .I think we'll be ok.

philn
838 posts
25 Jun 2023 8:54PM
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I'll be dead by the time the earth is unlivable. Explain again why all us old timers should care?





/s

remery
WA, 2806 posts
25 Jun 2023 9:29PM
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I don't have kids who play at the park. Explain again why I should pick up my dog's excrement?



/s

Pcdefender
WA, 1492 posts
25 Jun 2023 10:20PM
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remery said..
So, having seen actual data, you retract your comment that last month was cooler than average?


I mentioned so far this month according to the B O M the average max for Perth up until the 24th of May is 1.7C cooler than average.

You conveniently chose not to respond to it as it goes against the narrative.

The earth if anything appears to be going through a cooling phase.

remery
WA, 2806 posts
25 Jun 2023 10:41PM
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Pcdefender said..
For the last 2 months it seems Perth has been freezing.

May and June have average max temperatures of 22.3 and 19.5 yet nearly every day it seems the max has been around 17C.

Rango
WA, 708 posts
26 Jun 2023 5:55AM
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remery said..
I don't have kids who play at the park. Explain again why I should pick up my dog's excrement?



/s


Im glad you used dog **** in reference to Hansen's claims thats what they are.Media headline grabbing for personal gain.
You pick up dog **** because its real a prediction is not .
I hope your dog is vegan.

elmo
WA, 8732 posts
26 Jun 2023 9:01AM
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Pcdefender said..

remery said..
So, having seen actual data, you retract your comment that last month was cooler than average?



I mentioned so far this month according to the B O M the average max for Perth up until the 24th of May is 1.7C cooler than average.

You conveniently chose not to respond to it as it goes against the narrative.

The earth if anything appears to be going through a cooling phase.


Responding with link for you PCD

tenor.com/search/youre-wrong-gifs

remery
WA, 2806 posts
26 Jun 2023 6:05PM
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Given the interest in Perth June temperatures I thought I would have a look at the historical record for Perth regional office. Notice a trend?

1881 1910 17.6
1891 1920 17.7
1901 1930 17.9
1911 1940 18.0
1921 1950 18.3
1931 1960 18.2
1941 1970 18.4
1951 1980 18.5
1961 1990 19.0
1971 2000 19.2
1981 2010 19.3

remery
WA, 2806 posts
26 Jun 2023 6:30PM
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I thought I would add a polynomial function trend line.


Carantoc
WA, 6670 posts
26 Jun 2023 7:52PM
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^^
Is it reasonable to use a polynomial fit to forecast, and particularly to forecast forward well beyond the spread of data ?

Or should you only use polynomial fit to estimate a missing value that falls within the bounds of the data ?


I mean, if I try to retro fit whatever formula you used to get that forecast (one might call it a "hockey stick" graph !!) then it means if you go backwards, the mean temperature in Perth region in the year 1500 was above 30 degrees. And it was hotter than today back in about 1700, before dipping to a minimum around 1900.

If you fit a third order polynomial to the data, then back in 1700 the average temperature in Perth was apparently -1 deg. Mmmmm, must have been the infamous WA ice-age written into all the geological records. The indigenous-eskimo era was it ?

Hope you are not making the same mistakes that Mann did.

hardpole
WA, 577 posts
26 Jun 2023 10:30PM
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Without the extrapolation there does still seem to be a clear trend.




Although @remery what was the third column of data ?

Magpieuser
QLD, 46 posts
27 Jun 2023 11:30AM
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Using the above sea level graph, sea level will increase 1m in the next 300 years.

Seems manageable and a long way from an 'emergency'.

All for pumping less crap into the air and the ground (and sea) but I am completely over the constant barrage on a daily basis of GW blah blah blah.

A great industry to be in I'm sure and pays well to those who play.

remery
WA, 2806 posts
27 Jun 2023 10:49AM
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hardpole said..
Without the extrapolation there does still seem to be a clear trend.
...
Although @remery what was the third column of data ?

I just pasted 3 columns, start-year, end-year and mean 30 year maxima for June.

I might try the same thing for Gympie, there's a lot of claims that the measurements show cooling.

[edit] I had a quick look at Gympie and Brisbane. There's not much increase at all. I wonder if that is because the Leeuwin and Zeehan Current is strongest in winter while the East Australian Current is usually strongest in summer.

Mobydisc
NSW, 9029 posts
27 Jun 2023 3:39PM
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remery said..
Given the interest in Perth June temperatures I thought I would have a look at the historical record for Perth regional office. Notice a trend?

1881 1910 17.6
1891 1920 17.7
1901 1930 17.9
1911 1940 18.0
1921 1950 18.3
1931 1960 18.2
1941 1970 18.4
1951 1980 18.5
1961 1990 19.0
1971 2000 19.2
1981 2010 19.3


Where is the weather station located? It could be a heat island effect. 120 years ago Perth was not as built up as it is today. There was probably a lot more bush and less concrete and asphalt compared to today. It would be better to measure the temperature at a location that has not seen a lot of development over time.



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Forums > General Discussion   Shooting the breeze...


"Global Warming has hit Perth" started by Pcdefender