Why are all the significant trend differences in the wrong direction («
Urban Cool Island»)?
An urban cool island can form in high - density cities like Hong Kong because tall buildings provide extra heat capacity and shade.
Not exact matches
Measures that tackle the
urban heat
island effect also make cities more energy efficient (by reducing the
cooling needs inside buildings) and more comfortable (by shading city residents).
Giving buildings
cool - surface makeovers counters the
urban heat
island effect and reduces the temperature inside a building.
Laser
cooling has been applied to paint, which could mitigate
urban heat
islands and solve the problem of how to
cool objects in space
The non-profit
Cool Roof Rating Council (CRRC), for instance, suggests roofing surfaces that reflect the sun's heat so as to reduce the
urban heat
island effect while improving residential energy efficiency.
On the other hand, they say the city could grow even more resilient due to the ongoing efforts to reduce the
urban heat
island effect — for instance through programs to install reflective roofs and plant trees, as well as to protect vulnerable populations through heat warning systems and the availability of
cooling centers.
Urban land use creates a heat -
island effect because asphalt, brick, and concrete absorb and conduct solar energy, while the
cooling effect of evaporation from soil and vegetation is reduced.
Large, densely populated
urban areas are highly susceptible to exhausting heat waves exacerbated by the «heat
island» effect in which once permeable,
cooling surfaces like open land, bodies of water and vegetation have been replaced with surfaces that capture and retain heat like asphalt and concrete.
Innovative
urban design could create increased access to active transport.99 The compact geographical area found in cities presents opportunities to reduce energy use and emissions of heat - trapping gases and other air pollutants through active transit, improved building construction, provision of services, and infrastructure creation, such as bike paths and sidewalks.303, 318 Urban planning strategies designed to reduce the urban heat island effect, such as green / cool roofs, increased green space, parkland and urban canopy, could reduce indoor temperatures, improve indoor air quality, and could produce additional societal co-benefits by promoting social interaction and prioritizing vulnerable urban populations.311
urban design could create increased access to active transport.99 The compact geographical area found in cities presents opportunities to reduce energy use and emissions of heat - trapping gases and other air pollutants through active transit, improved building construction, provision of services, and infrastructure creation, such as bike paths and sidewalks.303, 318
Urban planning strategies designed to reduce the urban heat island effect, such as green / cool roofs, increased green space, parkland and urban canopy, could reduce indoor temperatures, improve indoor air quality, and could produce additional societal co-benefits by promoting social interaction and prioritizing vulnerable urban populations.311
Urban planning strategies designed to reduce the
urban heat island effect, such as green / cool roofs, increased green space, parkland and urban canopy, could reduce indoor temperatures, improve indoor air quality, and could produce additional societal co-benefits by promoting social interaction and prioritizing vulnerable urban populations.311
urban heat
island effect, such as green /
cool roofs, increased green space, parkland and
urban canopy, could reduce indoor temperatures, improve indoor air quality, and could produce additional societal co-benefits by promoting social interaction and prioritizing vulnerable urban populations.311
urban canopy, could reduce indoor temperatures, improve indoor air quality, and could produce additional societal co-benefits by promoting social interaction and prioritizing vulnerable
urban populations.311
urban populations.311, 303
Green roofs, green streets, rainwater gardens, and bioswales can absorb storm water runoff, while also
cooling city blocks suffering from the
urban heat -
island effect during hot summers.
The reasoning behind this is that the major cause of
urban heat
islands is the reduced
cooling that occurs at night when the «view to space» of the surface is blocked by buildings.
The main conclusion is that micro - and local - scale impacts dominate the meso - scale impact of the
urban heat
island: many sections of towns may be warmer than rural sites, but meteorological observations are likely to be made in park «
cool islands».
Panama is a beautiful destination that has it all: from dense tropical jungles to amazing beautiful beaches, from tropical
island paradises to
cool mountains reaches and from vibrant
urban city centers to remote Native cultures!
Panama has it all: from dense tropical jungles to amazing beautiful beaches, from tropical
island paradises to
cool mountains reaches and from vibrant
urban city centers to remote Native cultures!
It seems clear to me that that mountain glaciers and permafrost are: 1 sensitive indicators of changes in temperature; 2 uncontaminated by
urban heat
islands; 3 have short response times (no problem with lagged response to Little Ice Age
cooling); have wide geographical coverage (especially in remote areas).
The main conclusion is that micro - and local - scale impacts dominate the meso - scale impact of the
urban heat
island: many sections of towns may be warmer than rural sites, but meteorological observations are likely to be made in park «
cool islands».
A reflective coating on the tower rooftops reduces the summer season
cooling load and the
urban heat
island effect.
The» top ten» arguments employed by the relatively few deniers with credentials in any aspect of climate - change science (which arguments include «the sun is doing it», «Earth's climate was changing before there were people here», «climate is changing on Mars but there are no SUVs there», «the Earth hasn't been warming since 1998», «thermometer records showing heating are contaminated by the
urban - heat -
island effect», «satellite measurements show
cooling rather than warming») have all been shown in the serious scientific literature to be wrong or irrelevant, but explaining their defects requires at least a paragraph or two for each one.
Tokyo, for example, has been planting trees and shrubs on the rooftops of buildings to help offset the
urban heat
island effect and
cool the city.
Innovative
urban design could create increased access to active transport.99 The compact geographical area found in cities presents opportunities to reduce energy use and emissions of heat - trapping gases and other air pollutants through active transit, improved building construction, provision of services, and infrastructure creation, such as bike paths and sidewalks.303, 318 Urban planning strategies designed to reduce the urban heat island effect, such as green / cool roofs, increased green space, parkland and urban canopy, could reduce indoor temperatures, improve indoor air quality, and could produce additional societal co-benefits by promoting social interaction and prioritizing vulnerable urban populations.311
urban design could create increased access to active transport.99 The compact geographical area found in cities presents opportunities to reduce energy use and emissions of heat - trapping gases and other air pollutants through active transit, improved building construction, provision of services, and infrastructure creation, such as bike paths and sidewalks.303, 318
Urban planning strategies designed to reduce the urban heat island effect, such as green / cool roofs, increased green space, parkland and urban canopy, could reduce indoor temperatures, improve indoor air quality, and could produce additional societal co-benefits by promoting social interaction and prioritizing vulnerable urban populations.311
Urban planning strategies designed to reduce the
urban heat island effect, such as green / cool roofs, increased green space, parkland and urban canopy, could reduce indoor temperatures, improve indoor air quality, and could produce additional societal co-benefits by promoting social interaction and prioritizing vulnerable urban populations.311
urban heat
island effect, such as green /
cool roofs, increased green space, parkland and
urban canopy, could reduce indoor temperatures, improve indoor air quality, and could produce additional societal co-benefits by promoting social interaction and prioritizing vulnerable urban populations.311
urban canopy, could reduce indoor temperatures, improve indoor air quality, and could produce additional societal co-benefits by promoting social interaction and prioritizing vulnerable
urban populations.311
urban populations.311, 303
The satellite data, for example, shows
cooling... The argument is that there has been warming since then but, in fact, almost all of that is due to what is called the «
urban heat
island» effect... [DC: Nice...]
Ecoroofs also absorb carbon dioxide,
cool urban heat
islands, and filter air pollutants.
``... this robust old station, despite the
urban effects, shows that there's been no statistically significant warming in Prague since 1800 (and at most 0.5 °C or so in 200 years, and I haven't subtracted any corrections for the intensification of Prague's
urban heat
island which may be as much as 0.6 °C per century and which would probably revert the 200 - year trend to a significant
cooling!)
He rewrote Wikipedia's articles on global warming, on the greenhouse effect, on the instrumental temperature record, on the
urban heat
island, on climate models, on global
cooling.
The thermometer network is made up of a patchwork of non-research quality instruments that were never made to monitor long - term temperature changes to tenths or hundredths of a degree... Furthermore, land - based thermometers are placed where people live, and people build stuff, often replacing
cooling vegetation with manmade structures that cause an artificial warming (
urban heat
island, UHI) effect right around the thermometer.
Whatever the average regional temperature, it's hotter in the cities, because concentrations of traffic, business, heating, cooking, lighting and air conditioning generate what has become known as the
urban heat
island effect: what makes this worse is that the asphalt, tarmacadam, stone, brick, glass and tile of which cities are made absorb radiation but prevent ground evaporation as a natural
cooling device.
3) While there seems to be some residual
Urban Heat
Island (UHI) effect in the U.S. Midwest, and even some spurious
cooling with population density in the Southwest, for all of the 1,200 USHCN stations together there is little correlation between station temperature trends and population density.
In recent years, he has claimed that the Earth has been
cooling since 1998 (in 2006), that the Earth is warming, but it is natural and unstoppable (in 2007), and that the warming is artificial and due to the
urban heat
island effect (in 2009).
Preserving existing vegetation can reduce rainwater runoff, mitigate the
urban heat
island effect, reduce the energy needed for heating and
cooling, and reduce landscaping installation and maintenance costs.
The deep seawater infrastructure with a rated
cooling capacity of 25.000 tons will
cool up to 40 % of the
urban area on the
island of Oahu.
To minimise the risks of heat stress that are most pronounced in large cities due to the
urban heat -
island effect in summer (Kalnay and Cai, 2003)
urban planning should consider: reducing the heat
island in summer, the heat load on buildings,
cooling load and high night - time temperature, and taking climate change into account in planning new buildings and setting up new regulations on buildings and
urban development.
Furthermore, land - based thermometers are placed where people live, and people build stuff, often replacing
cooling vegetation with manmade structures that cause an artificial warming (
urban heat
island, UHI) effect right around the thermometer.
In the paper this result is reached by taking also into account several possibilities including the fact that the volcano
cooling is evidently overestimated in the GCMs, as we have seen above, and that part of the leftover warming from 1970 to 2000 could have still be due to other factors such as
urban heat
island and land use change.
Urban vegetation can have an astounding effect on local air quality, and given that the urban heat island effect can kill well beyond the borders of a particular city, simply cooling down our city centers has immense bene
Urban vegetation can have an astounding effect on local air quality, and given that the
urban heat island effect can kill well beyond the borders of a particular city, simply cooling down our city centers has immense bene
urban heat
island effect can kill well beyond the borders of a particular city, simply
cooling down our city centers has immense benefits.
Green roofs and rooftop gardens have many
cooling benefits, they reduce the
urban heat
island effect, protect the «membrane» (aka roof), increase amenity space, and promote biodiversity.
A recent Journal of Climate paper by Stanford's Mark Jacobson and John Ten Hoeve (2011) on
urban heat
islands and
cool roofs is a useful contribution to the literature.
The researchers think this breakthrough is important not just for keeping energy use down in individual buildings, but because of the major impact super
cool roofs could have on the
urban heat
island effect.