Climate Change

Predict what the effects of aerosols may have on climate change

Dramamtic changes on climates has been developed to noticeable changes to the world. Temperatures are warm in the winter and the summer becomes more hotter than it is. Creating more heat waves thoughout the summer. Many scienctist believe that aerosols are the reason why the climate temperatures are higher while others believe it is not, but what causing the climate temperatures to change are the greenhouse gases. To explain which one is causing the climate change, a person must know what each one does and their effects.

One must know that one of the effects of most of the change is because of the urban heat island effect. The urban heat island effect is when temperatures are a few degrees higher in cities than they are in their  surrounding rural areas. Studies from Environmental Protection Agency found that in U.S. cities the temperatures are 10 degrees fahrenheit higher making that a few degrees can make  a huge difference. Since temperatures are 10 degrees higher the demand for air conditioning rose in dramatic percentages of 95% higher in the summer time which cause higher energy bills. The energy of power plants being transfered  to cities  increases the greenhouses gases.  The effect of urban heat island effect concerns when objects can absorb  and reflect light. It depends on the color of an object of what kind of light it reflects such as a green object reflects a green light and absorbs  all the visible colors of light. The color of the green object will reflect the green wavelength of color back to our eyes.As for darker colored objects become excellent absorbers of light. They absorb  almost all the light. When objests absorb light it converts that light to thermal energy and emits  back out as heat. Making that darker colored objects that absorb more light produce more heat. As for wearing a white t-shirt on the other hand, will help reflect the sunlight and keep a person or an object cooler.

With that in mind, many scientist develop ways to reduce the urban heat island effect. One of the ways is changing to roof coloring and also adding grass and plants on the roofs. The roof coloring would be known as white roofing. The experiment of white roofing  was develop in New York City when they found out the results that with the white covering on most buildings  measured at 42 degress Fahrenheit cooler that the traditional black roof. Remarkable it lowered most of the temperature of New York. The testing of white roofing was promoted by Mayor Michael Bloomberg in his efforts  to reduce the city's greenhouse gas emmissons by 30% in 2030.  Proving that whte roofing surface reduce peak rooftop temperature to a typical black roof by 43 degrees fahrenheit.

Now about aerosols, aerosols are tiny particles that suspended in the air. They originate from volcanos, dust, storms, forest, grassland fires, living vegetation and sea spray. Also humans play a role of creating aerosols also by burning fossil fuels  and tge alteration of natural surface cover.  10% is completely made by humans in the most concentrated in the Northern Hemisphere, especially downwind industrial sites, slash and burn agricultral regions and overgrazed grasslands. Aeroslos become very important to our understanding of what they do.  Many scientist that care about aerosols and disagree about the warming about the climate is aerosols, would know that aerosols tend to cause cooling of the Earth's surface immediatelybelow them than warming it. Most aerosols reflect the sunlight back into spac. They have what is called a direct cooling effect by reducing  the amount of solar radiation that reaches the surface. Its like a matheical equation compostion of aerosols particles leads to refective properties of the underlying surface. IT is believed  that aerosols are "indirect" effect on the climate by changing properities of clouds. However it is ver difficult to form clouds without small aerosol particles acting as "seeds" to stat the formation of clouds droplets. The contretation increases with in the cloud , the water in the cloud  gets spread over many  more particles, each of which is correspondingly smaller. Smaller particles fall more slowly in the atmosphere  and decrease the amout pf rainfall. With smaller droplets it will reflect more sunlight and since clouds last longer. because it takes more time for small drops tp coalesce into drops that are large enough to fall to the ground. Both effects increase the amount of sunlight that is reflected to space without reaching the surface/

So forth, the arugment will continue in if aerosols warm the Earth, but what can you do, they are scientist, they know everything right .

Cite:
McGrath, Jane. "What Is the Urban Heat Island Effect?" HowStuffWorks. DiscoveryCompany, n.d. Web. 04 Feb. 2013.

"Reducing the Urban Heat Island Effect: Bright Is the New Black as New York Roofs Go Cool." ScienceDaily. ScienceDaily, 07 Mar. 2012. Web. 04 Feb. 2013.

Hardin, Mary. Kahn Ralph. "Aerosols &Climate Change"