I have no idea how good the urban stations are corrected for UHI
by rural stations.
Not exact matches
Demonstrating the value of good internet in
rural Australia, Lyn French and her grandson Robert shared details from their life at Gilberton
Station, Georgetown with the Prince of Wales
by video link.
The Australian Agricultural Company's
rural property portfolio has risen in value
by almost twice that of Sydney house prices in the last year, with its huge cattle
stations having gained 15.8 per cent.
As well as
rural reports, The
station also airs a local Saturday breakfast show, which is followed
by a local Saturday morning sports program.
A small but useful contribution in all three republics might be made
by recommissioning small hydroelectric
stations of the pre-Soviet period that powered small
rural settlements.
We carefully studied issues raised
by skeptics: biases from urban heating (we duplicated our results using
rural data alone), from data selection (prior groups selected fewer than 20 percent of the available temperature
stations; we used virtually 100 percent), from poor
station quality (we separately analyzed good
stations and poor ones) and from human intervention and data adjustment (our work is completely automated and hands - off).
After the train
station set - up, the film cuts to 1943
rural Kentucky, where a muscular young Brashear is plowing fields with his daddy (Carl Lumbly), who tearfully implores his son, «Don't end up like me» (the line is accompanied
by background thunder, as if such emphasis is needed).
As residents walk through the center of town — past the taxidermy shop, past the gas
station and Selby's grocery, past the Poolesville Barber and Stylist — they are surrounded
by reminders of what brought them to this
rural town.
Compare loan rates offers from different commercial property lenders
by completing a short commercial mortgage mini-application for properties such as multi-family, self - storage, mobile home parks, airport, warehouses, retail strip centers, mixed - use property (gas
stations, retail stores) office building, hotels and motels,
rural, land development.
Urban Farmer Denver brings «
rural chic» to life in the heart of Denver, adjacent to The Oxford Hotel and nearly
by to the revitalized Denver Union
Station.
Human induced trend has two components, namely (a) greenhouse effect [this includes global and local / regional component] and (b) non-greenhouse effect [local / regional component]-- according to IPCC (a) is more than half of global average temperature anomaly wherein it also includes component of volcanic activities, etc that comes under greenhouse effect; and (b) contribution is less than half — ecological changes component but this is biased positive side
by urban - heat - island effect component as the met network are concentrated in urban areas and
rural - cold - island effect is biased negative side as the met
stations are sparsely distributed though
rural area is more than double to urban area.
This takes public domain data provided
by the Met Services, homogenises it and makes a correction for urban warming based on nearby
rural stations.
For example, in the region investigated
by Dole et al (50N - 60N / 35E - 55E) no single (or combined)
rural GISS
station (with a population less than 10,000) covers the post-Soviet era, a period when Moscow expanded rapidly.
They adjust the temperature anomalies of urban
stations by comparison with close
by rural ones.
Back in ’88 there was still quite a debate about whether the world was in fact warming or whether the temperature record had been contaminated
by the urban heat island effect of cities springing up around former
rural weather
stations.
especially since a considerable amount of the old
rural stations have now been affected
by urbanization.
Such changes are difficult to adjust for
by any automatically applied algorithm and therefore
rural stations with minimum changes of their surroundings are preferable.
However, what happens if a
rural weather
station is surrounded
by urban
stations?
Since about 20 years, GISS and NOAA adapt UHI
station output
by homogenizing the data with that of their
rural neighbours.
------------------------------------ And here's what the proxies vs. the highly adjusted instrumental data that have been hopelessly corrupted
by removing thousands of
rural stations and keeping urban
stations, moving
rural sites to airports, «mostly made up» SH sea surface temperatures, cooling down the 1930s and 1940s artificially to remove 0.5 C from the early 20th century warming... look like.
Here is a chart comparing, for the CONUS from 1880 till today, very
rural places with the rest: The data was obtained
by selecting, out of all US GHCN
stations, those showing in their metadata both
rural mode and least nightlight.
What's more, NASA GISS takes explicit steps in their analysis to remove any such spurious signal
by normalizing urban
station data trends to the surrounding
rural stations.
On the other hand, a previously
rural station that has been engulfed
by an expanding city will most definitely feel some warming and will show a trend during the period of its engulfing, although again how much will depend on circumstances.
We have been contacted with requests for information and assistance
by affected people living in urban as well as
rural areas, and the noise and vibration sources have included coal mining, gas fired power
stations, large refrigeration units with compressors and swimming pool compressors in city apartment blocks.
In
rural Australia, acoustical consultants working for the wind industry or other noise polluters are regarded almost universally with complete contempt
by those people whose health has been harmed
by the noise pollution, regardless of the source of the noise (eg mining, CSG field compressors, gas fired power
stations as well as wind turbines).
Note in Watts Figure 16,
by far the largest adjustments (in the warming direction) are for
rural stations, which is to be expected if TOB is introducing a cool bias at those
stations, as Karl discusses.
A 0.3 C increase over a century
by just the changing mix of
rural / urban
stations.
Urban areas are warmer than
rural areas, and many weather
stations around the world have become surrounded
by urban sprawl since the Industrial Revolution.
We carefully studied issues raised
by skeptics: biases from urban heating (we duplicated our results using
rural data alone), from data selection (prior groups selected fewer than 20 percent of the available temperature
stations; we used virtually 100 percent), from poor
station quality (we separately analyzed good
stations and poor ones) and from human intervention and data adjustment (our work is completely automated and hands - off).
Over time fewer
rural stations are available, and
by 2000 only 25 % are
rural.
Some of the temperature increases shown
by Dr Jones in fact are caused
by temperature recording
stations that were once in
rural locations on the outskirts of cities now being affected
by the Urban Heat Island effect as urban development surrounded the weather
stations.
If temperatures rose because previously
rural weather
stations were swallowed up
by expanding megalopolises then some doubt is cast on whether that data supports theories of human - caused global warming.
In a study I am doing of 17 truly
rural stations from around Australia, about half are
by the seaside or on islands.
In other words, the effect of artificially warming up the
rural and good
stations to match the urban and bad ones is
by far greater than the effect of TOBS adjustments.
To summarize your and Steve's argument — the fact that the good and
rural stations show almost no warming trend whereas the badly placed and urban ones show huge warming is not a consequence, as one might think, of the latter being affected
by, you know, UHI, but, au contraire, of the former not being «properly adjusted».
In countries such as the US, most urban development / growth predates the period considered
by Menne and hence when looking for temperature trends (rather than absolute accuracy in the temperature measurement), during the period considered
by Menne, one would not expect to see substantial differences between good and bad sited
stations, or between urban and
rural stations.
Try this: The USHCNv2 adjustments multiply the warming of well sited
rural stations by nearly three.
By contrast, all of the
rural stations show a long term cooling trend, with some recent warming.
That only proves that the supposedly
rural stations are polluted to a similar level
by UHI.
And this is demonstrable on average, for «pristine»
rural stations (spot checking US surfacestations.org raw versus GISS, or Rutherglen
by BoM in Australia with their algorithm) and for carefully maintained and suitably adjusted (
station moves, instrumentation) urban
stations.
Over time, some weather
stations that once recorded temperatures in
rural areas have been surrounded
by cities and suburbs.
New Environment Canada
stations (recall that some of the Environment Canada data is for
stations that are not in GHCN) do not get any brightness information in the v2.inv file; it so happens that in ccc - gistemp this means they get marked as
rural, more
by accident
by design.
People have computed trends using raw data, adjusted data,
rural - only data, Anthony Watts «best
stations only» data, etc etc including several reconstructions
by people with at least one foot in the denialist camp and the same trend pops out.
But perhaps these aren't the pictures they are looking for...
By the way, the
station in my area (Groningen / Eelde) was located downtown in the city of Groningen before WWII, now it is located on an airfield in a more
rural area where the dominating SW winds are not coming from the city.
One company, which has already been making huge inroads in renewable energy in
rural Africa, is looking to do just that, and to expand its business
by coupling its micro-solar arrays with charging
stations for delivery drones.
Studies have shown that development close to transit
stations can reduce the number of automobile trips
by 40 to 50 percent relative to suburban and
rural areas.
There have been a number of studies suggesting that ground - based data is severely compromised
by urban heat island effects, inappropriate placement of monitors that increase recorded temperatures over what they would have been if the instruments had been properly cited, and the drop - out of a large number of
rural stations in the 1970s.
UHI is not an issue of actually warming the environment; it relates to creating an illusion of warming
by engulfing recording
stations, which are treated as
rural even though they are now immersed in an Urban Heat Island.
However, if you live in a
rural area your home insurance rate will be affected
by how near, or far, the closest fire hydrant and
station are to your house.
The Chinese government has expressed concern at the amount of electricity used
by bitcoin miners, especially from hydropower
stations which were intended to deliver low - cost or free electricity to low - income
rural areas in the country.