What is an urban heat island?
Urban Heat Islands (UHI) are a phenomenon where the temperature of the surface and atmosphere of an urban area is higher compared to the surrounding rural areas and suburban areas. It is an illustration of unintentional climate change as a result of urbanization (the process wherein population shift from rural areas to urban areas and the way society changes to accommodate the change). Another name for UHI is “local warming” as opposed to global warming.
Urban Heat Islands are indicated by the regional change in temperature and the time change in temperature, which are measured hour by hour. When measuring the effect of UHI in term of temperature one must compare the temperatures in the cities (urban areas)
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Scientists measure air temperatures for CLHI or BLHI directly using thermometers, whereas the SHI is measured by remote sensors mounted on satellites or aircraft. (JA Voogt, 2004)
Characteristics of urban heat islands
The Overall spatial form (shape) of the heat island
The reason urban heat islands were given there name is because on isothermal charts they looks like an island (due to temperatures being higher than the surrounding areas).
The temperatures of the canopy-layer air make a sharp rise at the boundary of rural- suburban areas. Thereafter the temperatures increase gradually as one gets closer to Central Business district (CBD) (Downtown), where the highest temperatures occur. The boundary layer heat islands less variability the in temperatures than the other urban island types.
Heat island
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The following factors also contribute to the formation of urban heat islands: urbanization, weather(wind speed and cloud cover), geographic location, time of day and season, city form and city functions, population size/density, land and building material( B Offerle, 2006) and Anthropogenic heat sources(cars air conditioning, power plant, etc.) (Qihao Weng, 2004
Urbanization
Urbanization is the main cause for the formation of urban heat islands. As urbanization progresses over time, the temperature of Urban Heat islands also increases. This is as a result of when vegetation is replaced with roads, building, and other infrastructure, to accommodate the growing populations; these surfaces absorb the sun’s rays. This causes the surface and overall temperature to rise.
Lack of vegetation
Vegetation provides a natural cooling effect as shade it provides shade, has moisture trapped within the soil that evaporates, which produces water vapor that contribute to cooling the air and intercepts radiation.
City form and
The most thought-provoking book I read this summer was The Hot Zone by Richard Preston. Not only is this book fast paced keeping you with the urge to read but it also focuses on real events leaving the reader to wonder why it is said that history repeats itself. I chose this book to focus on because of the close connection the story seemed to hold to recent events in history. The Ebola outbreak was the center of the media’s attention recently because of all the harm it caused in Africa and the fact that a virus could be so destructive, managing a large scale outbreak, is a massive threat to life as we know it. My reason for taking AP World History was really quite simple.
Summary of Barrier island stratigraphy and Holocene history of west-central Florida In Davis et. Al (2003), researchers studied the Holocene Barrier island and inner continental shelf located in west-central Florida. The study itself took place in the northern Florida Gulf peninsula barrier inlet, extending from Anclote Key to Cape Romano. The purpose of this research project was to analyze the characteristics and nature of the barriers, as well as to understand where the barriers were formed and the process(s) of that formation.
The above tables summarize the average monthly temperature from 2 stations in North Florida, Central Florida, and South Florida. One station is located inland and one station is located near the coast. The average monthly temperatures will be analyzed and compared by regions and then compared as a whole using conceptual temperature models. To begin, the two stations that were chosen in North Florida are located in Panama City and Blountstown. Panama City is located near the coast, thus coastal locations typically have a cooler average monthly temperature in summer or cooler average maximum temperature than inland locations.
Physical properties which include physiological and environmental signals such as temperature, humidity, and amount of sunlight. The interaction parameter associated with both the computing and
The social problems that urbanization and industrialized in the late 19th century created was slums. “Forty-two men and women in a room not more than twelve feet square, and in the corner on a heap of dirty straw lay a woman with a newborn babe” (Related Document 1, pg. 275). Immigrants were living in an overcrowded tenement and having to pay high rent. They lack access to clean water for drinking, garbage and sewage system. Most of the people who live in the slums became the victim of crime and diseases.
On a sunny day, the land absorbs heat from the sun more quickly than the water does. The air over the land becomes warmer as some of this absorbed heat is radiated back into the air. The warmer air begins to rise, and the cooler air over the water moves in to take its place. At nighttime when the sun goes down, the land cools off quickly, but the water does not. The water radiates some of its stored heat into the air, and this warmed air begins to rise.
Undoubtedly, there are many factors that can impact temporal patterns as illustrated in the climographs. Both of the cities is located in a different part of the world and experiences different climates. Each of the cities have very different geographical layouts and factors that affect temperature and precipitation throughout the year. In Toronto, Canada climate is moderate with warm humid summers and generally cold winters. The climate in Toronto, Canada is moderate due to its southerly location within the country and its proximity to Lake Ontario.
Introduction As the world’s population continues to migrate and live in urban areas, planners, engineers, and politicians have an important role to ensure that they are livable and sustainable. But what defines an urban area and what makes it so attractive? In my opinion, urban areas are places that consist of a variety of land uses and buildings, where services and amenities are easily accessible to the general public, and includes an established multimodal transportation network. Also, it should be a place where people can play, learn, work, and grow in a safe and collaborative manner.
Gentrification is a problem that has taken place in many major cities across the country, and is an even bigger problem today. As gentrification becomes more common, it has become more controversial, too. Gentrification is the process in which urban neighborhoods or cities get rebuilt or renovated, resulting in increased property values and eviction of lower-income families and small businesses. Gentrification normally takes place in bigger cities like D.C, Boston, Los Angeles, Atlanta, Nashville, and Baltimore. The purpose of the process is to improve and upgrade cities to make them more presentable and efficient.
A shock city is the urban place that represents a massive and rapid changes in social, economic, and cultural life (urbanization) due to many factors, including new models of transportation such as railroads, industrialization, and other factors. The first city that was considered the “shock city” was actually Manchester, England. It grew very quickly, and it was the world’s first industrialized city and the home of the cotton industry, cottonopolis - a metropolis centered on cotton trading. Same as Manchester, Chicago was also the “shock city” of North America because of its rapid growth. Both cities were industrial cities, Chicago rose from a struggling village sunk in the middle of a grassland creek to a metropolis city.
3 MATERIALS AND METHODOLOGY 3.0 INTRODUCTION Energy analysis of buildings helps to simulate the amount of energy used in a building. It is very important as it helps to discover and ascertain new ways of conserving energy and ensuring energy efficiency of building components. Building developers, construction engineers are increasingly interested in creating more energy efficient reason, and for this purpose whole building energy simulation programs are being used to determine strategies that save energy and are cost effective. The most common way available to perform this building energy analysis is to implement building information modelling(BIM). Building Information Modelling(BIM) consists of a digital representation of physical and functional
Hot and dry conditions cause earth surface to be drier and this lead to massive wildfires which destroy wildlife habitat and inject huge amount of carbon dioxide into the atmosphere. There are some positive impacts of wildfires on the environment, wildfires clean up a forest of dead and decaying matter. They maintain ecosystem balance by removing diseased plants and harmful insects and regeneration of seeds through sunlight. They kill invasive species, allowing for indigenous species to continue thriving. Wildfires can engender flash flood conditions and enable soil erosion, with an increase in water runoff.
Objectives of study 1. Study the factors causing the rise in global warming. 2. To analyze the consequences of this constant inclination in the temperature of earth. 3.
With deforestation being one of these roles because when we chop down these trees and plants of where animals habitats our it also releases a lot of carbon dioxide into the air. And if you didn’t know forests are major carbon storage centers, when deforestation happens all the carbon dioxide that is stored in these forests; is released back into the atmosphere. Deforestation not only contributes to changes in the climate, it also causes localized changes in the weather. Trees transpire, or release water into the atmosphere, during photosynthesis. This water replenishes clouds and maintains rainfall.
AN AMAZING TRIP TO LAGOS Lagos is one of the best loved and darling regions of Africa that captures the attention of hundreds of people from various corners of the world. Known to be the most vibrant, pulsating and happening destination of this planet it offers a charismatic and magical ambiance that attracts plenty of locals and hundreds of foreigners who just love to capture and enjoy the charm and bewitchment of this flamboyant destination. Lagos is located in the south-western part of Nigeria and occupies the region of more than 3,577 square kilometres and is very popular for being the superb and magnificent metropolis of the country. It is highly appreciated and famous for the jaw dropping and spell-casting islands; the worth-watching ones include Lagos Island, Victoria Island, Ikoyi, Iddo and plenty of others. Though the list of such fascinating and enticing spots is very long but some of the most popular and worth-seeing ones are discussed as below.