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Global Warming Effect on Major US Cities: Average Temperature Change (1960-2020)

Jack Hays said:
Sydney Temperatures The Same As 230 Years Ago

[FONT="]Posted on [URL="https://realclimatescience.com/2020/05/sydney-temperatures-the-same-as-220-years-ago/"]May 12, 2020[/URL] by tonyheller
Temperatures in Sydney are about the same as 230 years ago, though summer and autumn temperatures were hotter in the past.


What has increased in Sydney is the Urban Heat Island Effect, at one of the worst sited thermometers in the world.
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2019 was the warmest and driest years in Australia continuing a dramatic warming trend. There this is of course not only in the cities but also in the desolate outback.

temperatures-across-australia-over-the-past-110-years-data.jpg

https://www.abc.net.au/news/2020-01...pZ3S6I0rWa-Xgo5NiselzkXSpl0r-_V-XwNU3CS-aIRdc

There you also had the devastating fires in Australia.

Climate change boosted Australia bushfire risk by at least 30%
 
Jack Hays said:
[h=2]Sydney Temperatures The Same As 230 Years Ago[/h][FONT="]Posted on [URL="https://realclimatescience.com/2020/05/sydney-temperatures-the-same-as-220-years-ago/"]May 12, 2020[/URL] by tonyheller
Temperatures in Sydney are about the same as 230 years ago, though summer and autumn temperatures were hotter in the past.


What has increased in Sydney is the Urban Heat Island Effect, at one of the worst sited thermometers in the world.
​

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I agree, but the followers of the AGW dogma are conviv=ced it's CO2. Not the urban heat island effect.

They sure are good with AGW fables, and bad with facts.
 
Bergslagstroll said:
2019 was the warmest and driest years in Australia continuing a dramatic warming trend. There this is of course not only in the cities but also in the desolate outback.

View attachment 67280396

Bureau of Meteorology chart shows how temperatures have soared in Australia over the past century - ABC News

There you also had the devastating fires in Australia.

Climate change boosted Australia bushfire risk by at least 30%
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Well, no.

[h=2]ABC suddenly notices the ‘heat island’ effect in cities[/h]
Skeptics mention the Urban Heat Island and its crickets from the ABC.
A green group mentions the Urban Heat Island effect and the ABC is happy to advertise:
Australian cities are increasingly becoming concrete jungles as trees and canopy coverage disappear, according to experts who warn this is contributing to an urban “heat island” effect.
“We know a tried and tested strategy is the introduction of more trees and green roofs in urban spaces, reducing surface temperatures by up to 40 per cent,” Griffith University urban and environmental planner Tony Matthews said.
40% of what, we might wonder, but the ABC doesn’t.
Could this huge heat effect possibly affect temperature records creating a systematic century scale bias inflating and creating fake hottest ever records. Nothing to see here, nevermind.
What radiates like an oven but doesn’t heat thermometers?
A national initiative — called Greener Spaces Better Places — brings together academic, government and industry groups to promote further greenery in our cities. Its research says black bitumen and dark roofs compound the already-hot days by creating a so-called heat island effect, absorbing heat and radiating it back like an oven.
Radiating like an [...]
 
Jack Hays said:
Well, no.

[h=2]ABC suddenly notices the ‘heat island’ effect in cities[/h]
Skeptics mention the Urban Heat Island and its crickets from the ABC.
A green group mentions the Urban Heat Island effect and the ABC is happy to advertise:
Australian cities are increasingly becoming concrete jungles as trees and canopy coverage disappear, according to experts who warn this is contributing to an urban “heat island” effect.
“We know a tried and tested strategy is the introduction of more trees and green roofs in urban spaces, reducing surface temperatures by up to 40 per cent,” Griffith University urban and environmental planner Tony Matthews said.
40% of what, we might wonder, but the ABC doesn’t.
Could this huge heat effect possibly affect temperature records creating a systematic century scale bias inflating and creating fake hottest ever records. Nothing to see here, nevermind.
What radiates like an oven but doesn’t heat thermometers?
A national initiative — called Greener Spaces Better Places — brings together academic, government and industry groups to promote further greenery in our cities. Its research says black bitumen and dark roofs compound the already-hot days by creating a so-called heat island effect, absorbing heat and radiating it back like an oven.
Radiating like an [...]
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Yes, it absolutely causes bias.
 
Lord of Planar said:
Yes, it absolutely causes bias.
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Every major surface temperature record quantifies and adjusts out the urban heat island effects from the record.

You know this Lord.
 
Jack Hays said:
[h=2]Sydney Temperatures The Same As 230 Years Ago[/h][FONT=&quot]Posted on May 12, 2020 by tonyheller
Temperatures in Sydney are about the same as 230 years ago, though summer and autumn temperatures were hotter in the past.


What has increased in Sydney is the Urban Heat Island Effect, at one of the worst sited thermometers in the world.
​

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I knew Tony Heller is a master of cherry-picking data to get the results he wants but this is just out-right dishonest.

The study cited is not a comparison of 230-year-old temps with today's temps. It is a comparison of the average of 3 years of very limited and flawed temp data from 1788 to 1791 with the average of 130 years from 1876 to 2007.

Luckily none of Tony's fanboys would ever think of fact-checking him and actually reading the study so they would know they are being misinformed.

He then suggests without any evidence that all the temp rise over the last 150 years or so are all from urban heat island. And his graph of temps is unsourced. I'll bet where ever that data came from the urban heat island effect has been adjusted out.

Oh... and I can't forget to mention that the Philadelphia temp record referred to in Heller's article is the record from 1790 to 1847.

:lamo

So much for being well-sourced.
 
Buzz said:
I knew Tony Heller is a master of cherry-picking data to get the results he wants but this is just out-right dishonest.

The study cited is not a comparison of 230-year-old temps with today's temps. It is a comparison of the average of 3 years of very limited and flawed temp data from 1788 to 1791 with the average of 130 years from 1876 to 2007.

Luckily none of Tony's fanboys would ever think of fact-checking him and actually reading the study so they would know they are being misinformed.

He then suggests without any evidence that all the temp rise over the last 150 years or so are all from urban heat island. And his graph of temps is unsourced. I'll bet where ever that data came from the urban heat island effect has been adjusted out.

Oh... and I can't forget to mention that the Philadelphia temp record referred to in Heller's article is the record from 1790 to 1847.

:lamo

So much for being well-sourced.
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It is indeed, and not dishonest in the slightest.

Sydney Temperatures The Same As 230 Years Ago

Posted on May 12, 2020 by tonyheller

Temperatures in Sydney are about the same as 230 years ago, though summer and autumn temperatures were hotter in the past.

January of 1790 was also the warmest January on record in Philadelphia.

 
Jack Hays said:
It is indeed, and not dishonest in the slightest.
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Wrong.

From the study:

For this study, Dawes’s temperature readings (up to six daily) were used from 14 September 1788 to 6 December 1791. Note that temperatures were not necessarily taken consistently at the same time every day. For example, some days there may be a specific 6am or 9am reading; at other times, there may only be a ‘before sunrise’ or ‘after sunrise’ reading. Similarly there may be a specific 6pm reading or a ‘sunset’ or ‘after sunset’ evening reading.
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That is the early data.

And here is what it was compared with:

To evaluate the quality of Dawes’s 18th century data, they were compared with modern climate data from Sydney’s Observatory Hill (station 066062) accessed through the Bu-reau of Meteorology. Daily temperature data (Tmean, Tmax, Tmin) (January 1876 to 31 December 2007)...
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emphasis mine

That second time frame is not now like the article says:

Temperatures in Sydney are about the same as 230 years ago, though summer and autumn temperatures were hotter in the past.
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Tony lied.
 
Buzz said:
Wrong.

From the study:



That is the early data.

And here is what it was compared with:



emphasis mine

That second time frame is not now like the article says:



Tony lied.
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Nope. The reference is obviously to the cited data. I guess everybody understood that but you.
 
Jack Hays said:
Nope. The reference is obviously to the cited data. I guess everybody understood that but you.
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Whatever Jack. I'm not arguing with you anymore after you stop making any sense.

Come back when you understand that the average of 1876 to 2007 is not now and have some kind of intelligent argument to make.
 
Buzz said:
Whatever Jack. I'm not arguing with you anymore after you stop making any sense.

Come back when you understand that the average of 1876 to 2007 is not now and have some kind of intelligent argument to make.
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The word "now" never appears.
 
Jack Hays said:
Reference to the cited data. Like I said, everyone but you understood.
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If he was referring to the cited data honestly he would have made it clear in his article what the time frame was and said "were" and not "are".

Plus... he said 230 years in the title. That can only mean "now".

Come on Jack... have you completely lost the ability to think critically and admit when you are wrong?
 
Buzz said:
If he was referring to the cited data honestly he would have made it clear in his article what the time frame was and said "were" and not "are".

Plus... he said 230 years in the title. That can only mean "now".

Come on Jack... have you completely lost the ability to think critically and admit when you are wrong?
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No. The temperatures 230 years ago were the same as those in the cited data. It's not complicated.
 
Buzz said:
If he was referring to the cited data honestly he would have made it clear in his article what the time frame was and said "were" and not "are".

Plus... he said 230 years in the title. That can only mean "now".

Come on Jack... have you completely lost the ability to think critically and admit when you are wrong?
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LOL.

Those qualities have never been evident in all his years of posting!
 
Jack Hays said:
No. The temperatures 230 years ago were the same as those in the cited data. It's not complicated.
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Whatever Jack. I'm not arguing with you anymore after you stop making any sense.
 
Buzz said:
Every major surface temperature record quantifies and adjusts out the urban heat island effects from the record.

You know this Lord.
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Rural records are tainted also.
 
Buzz said:
Yeah... you keep saying that but you can't back it up with anything that isn't denialist BS.
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Can you back up they aren't tainted?

By the definition used for "rural" regarding monitoring sites, they suffer from the land use changes around them too.
 
Lord of Planar said:
Can you back up they aren't tainted?
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Yup!! Thanks to longview. Or did you forget about that study he found?

Lord of Planar said:
By the definition used for "rural" regarding monitoring sites, they suffer from the land use changes around them too.
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Like irrigated agriculture? Irrigation that will bias the temps cooler?
 
Lord of Planar said:
Rural records are tainted also.
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You have provided no evidence for claims. While my previous link showed that you had a strong warming trend also in the desolate interior of Australia. Just like you have had all across the world.

temperatures-across-australia-over-the-past-110-years-data.jpg

Bureau of Meteorology chart shows how temperatures have soared in Australia over the past century - ABC News

Also you have many private operations around the world that is dependent on accurate weather data there the companies that run those operation are of course also doing there own collection of data. Not only but you have also companies like the fossil fuel industry that have a strong motivation to disprove the urgent need for action. So of course those companies would sound the alarm if it was something wrong with the official data. Instead even fossil fuel companies have to acknowledge the urgent need for action because the evidence is so overwhelming.

Statements on Paris climate agreement | ExxonMobil
 
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