Detroit gets a lot of negative press these days, mainly because it has become a poster child for badly managed cities and decline, but it does seem to have UHI going for it and is no stranger to downtown heat waves.
Bruce Hall writes in with this interesting comparison graph he put together, which suggests that Detroit has a higher average annual temperature due to the Urban Heat Island (UHI) effect. It seems you can experience the temperature increase claimed to be from CO2 globally (about 1.4°F) by moving from Ann Arbor to Detroit, though I doubt many people would choose to do so.
If you did the opposite, and moved from Detroit to Ann Arbor (something I’ll bet a lot of people have already done), would that qualify you to be a climate refugee?
Click image to enlarge
Source:
http://www.average-temperature.com/Stations_US_States.aspx
(which appears to be using the GHCN dataset.)
You’d expect Detroit to be warmer than Flint, simply by latitude effect, and about the same as Ann Arbor, but cooler than Toledo. Detroit is warmer than all of them.
Despite this, Detroit still has not surpassed the “Grandaddy of heat waves” in July 1936
I decided to test Hall’s method, just to make sure it isn’t a fluke, so I chose a city that isn’t in decline, Atlanta, GA and some nearby smaller cities and plotted a similar map:
The result is essentially the same as for Detroit.
And, it works just as well for Phoenix:
What I found most interesting was that Phoenix has an average annual temperature (72.8°F) higher than that of Casa Grande (69.5°F), by 3.3°F. Yet, the average max temperature for Phoenix (84.5°F) is lower than that of Casa Grande (87.4°F) by almost the same amount, 2.9°F. That’s quite an achievement since the thermometer at Casa Grande National Monument is mostly rural, but sited near to a building and parking lot.
Casa Grande is often listed as the hottest places in the nation on the daily weather summary by NOAA. According to the web page
The area has a low elevation and hence is very hot – often over 110°F for several months in the summer. During spring, this part of Arizona is sometimes the hottest place in the whole USA, and even in winter, daytime temperatures can reach 80°F.
The UHI to population relationship has been defined by Dr. Roy Spencer:
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Mr. Watts- trying to reach John Coleman about climate change scam. The answer to it is being held from us- the people’s of the world by a selected group- NWO gang. I have a friend, CIA, that
has told me all about the scam. ” answer is zero point energy” been held from us for 50 years so oil can be sold.
contact me please.
REPLY: Well whatever your friend told you, it isn’t just wrong, it’s ridiculous too. There’s no practical way to harness it.
See: http://www.calphysics.org/zpe.html
Anthony
It would be interesting to see how temperature adjustments work around these stations. Does the city mean the others get adjusted up and vice versa?
Someone have been finding some very odd results in Australia’s BOM adjustments ( reported at Jo Nova’s ).
It would be interesting to see how temperature adjustments work around these stations. Does the city mean the others get adjusted up and vice versa?
Someone have been finding some very odd results in Australia’s BOM adjustments ( reported at Jo Nova’s ).
I’m sure the typical response of the residents of those cities would be like the Geico commercial “Everybody knows that”. Look at the 10 day forecast of those cities and you see the difference is the higher lows.
Having lived in Phoenix, there should be no surprise why the max is lower but the average is higher. The concrete and asphalt hold in the heat during the day and release it at night.
All the irrigation and landscaping adds humidity that tamps the high down but also raises the low – just like along the coast of CA…..or it could be there is more CO2 in Phoenix.
I reside in Maricopa, AZ in the winter. The Phoenix temperatures as reported, particularly in the mornings, are always higher, often significantly so. Maricopa and Phoenix have almost identical elevations. The greater variance for Wickenburg however can be attributed to its elevation – 1000’ higher than Phoenix.
It would be interesting to know where the weather station is in Apache Junction since it’s annual temperature is recorded slightly higher than Maricopa, yet it’s elevation is 700’ higher. I suspect there may be an irregularity there as well.
The city of Detroit as in The City of Detroit – the corporation. The corporation of the city of Detroit is poorly managed (maybe) but the geographical area known as Detroit will be just fine, provided that the corporation stays out of everybody’s business……. al the while in the hopes that the people of that area keep depending on them for services.
anyways….
I think we were discussing urban heat islands?
When are we going to talk about this?
http://laws-lois.justice.gc.ca/eng/acts/W-5/page-1.html
I’ll keep putting out there until Joe.B and gang get the message.
7 posts already and still no one calling the UHI effect a myth; has Mosher overslept?
Doc Marten:
This is Sunday morning.
More “heat” just arrived in Motown last week when the Tigers signed a third Cy Young award winning pitcher to their winning roster!
Correction: Doc Martyn
Has anyone checked with Google or other mapping source to see if their aerial surveys and street imagery track temperature as well as WiFi and other privacy violations? Seems like it would be a useful resource.
Dont climate scientists have road thermometers in their cars? They should know from reading them in the winter how temperature climbs several degrees Celsius when approaching villages from rural areas in the winter.
Attention Allen Hall: Try to break free from conspiracy theories. There is no giant Government or Secret Society conspiracy controlling the masses. The internet spreads and grows these myths but serious study finds them all to be totally void of substance. The global warming bad science is not a conspiracy, but a case of science being twisted by a political agenda.
As for the Detroit heat island, it is somewhat modified by the lake effect. Just like Chicago (where I predicted the weather for 20 years) which is cooler near the lake by day and warmer near the lake at night, Detroit temperature swings are somewhat modified by the Lake Effect. The weather systems as they pass through the Great Lake region are significantly modified by the Lake effects.
Anthony,
I am always amused that so many people claim that the oil companies or the government are holding cheap energy sources from us.
It is surprising that they fail to realize that the numerous civilized countries who have competent engineers and scientists such as Japan, China, and India, and much of Europe would allow the US and other Oil companies to deprive them of a viable,cheap energy source.
How many times have I heard that people believe that the oil companies have bought up all the patents for carburetors and other devices that would allow the car to get 100 or more MPG.
Unfortunately we still have politicians who claim we can currently run our economy on wind, solar, food crops or cellulosic fuels.
Unfortunately this is where the fraud is successfully being committed on the public.
And while the recorded, uhi affected temperatures may be a good representation of reality, the concern is always going to be that their use to infill missing data will smear that extra heat all over the temperature record.
There should be no question about UH I effect. I have tested it going through towns from rural & back again. Invariably it shows up in minutes. Conversely, this weekend went from small town to lake & in 2 minutes & 2 miles temperature dropped by 5 degrees.
So, the global warming alarmist are correct. Global warming will destroy our economy. Cold Ann Arbor is one of the most liveable cities in America. Warm Detroit is a disaster.
I should have put (sarc) on my comment above.
A few days ago CNN ran a piece on Gaza and to give people perspective they pointed out that the Gaza Strip is the size of of Detroit with no water, no jobs, a wrecked infrastructure, corruption, bad government, etc. … it wasn’t clear where the similarities ended 🙂
I suspect Phoenix has a higher humidity than does Casa Grande. That may be the reason for the difference in the highs.
For sites without UHI bias, the pristene sited USCRN, no adjustments needed, temperature is flat for the US for ten years.
http://wattsupwiththat.com/2014/06/07/noaa-shows-the-pause-in-the-u-s-surface-temperature-record-over-nearly-a-decade/
@DocMartyn:
He’s out at the Airport where it is cooler…. No, honest! Hansen and the NOAA / NASA gang all tell me that acres of tarmac in the sun with tons of kerosene / minute being burned with all trees chopped down is a cooler more rural like place than the city… so they adjust out “UHI” via warming the thermometers in recent times when they moved from “cities” to the “cooler airports”.
I’d like to put a /sarc tag on that, but, unfortunately, they really do think airports are cooler…
Dave Van arsdale…..Motown as in Modesto Ca. I live in Oakdale and we need to talk….
Fellow dutchy
Nothing is clearer to the average person than the fact that the centres of towns and cities are several degrees warmer than small nearby settlements. This is a fact that terrifies the Catastrophic Warmistas as the relentless growth of population and urbanisation is equally clearly one of the major forces driving the increase of temperature over the last 100+ years, around the World. In an effort to deflect detection, the Warmistas have waved their hands in the direction of UHI accompanied by the words, “Nothing to see here”. More attention should be given to this major political weakness in the Warmista Mantra.