Blog Post

The urban heat island effect describes built up areas that are hotter than nearby rural areas. The annual mean air temperature of a city with 1 million people or more can be warmer than its surroundings. But in the evening the difference can be very high. It affects communities by increasing summer time peak energy demand, air conditioning costs and air pollution and greenhouse emission. he impacts of the UHI include increased energy commissions, and elevated emissions of air pollutants and greenhouse gases and impaired water quality

Increasing tree and vegetable cover and creating green roofs are the things that are being done to mitigate or reduce the impact of the UHI.

The aerosols

Aerosols are minute particles suspended in the atmosphere. They are important because their scattering of sunlight can reduce visibility (haze) and redden sunrises and sunsets. An act as sites for chemical reactions to take place (heterogeneous chemistry and large amounts of reactive chlorine and, ultimately, to the destruction of ozone in the stratosphere and those are some natural sources of aerosols in the atmosphere human activity add to atmospheric aerosols because of a large fraction of human-made aerosols come in the form of smoke from burning tropical forests, the major component comes in the form of sulfate aerosols created by the burning of coal and oil. The climate effect of the aerosols will be opposite to the effect of the increasing atmospheric trace gases cooling instead of warming the atmosphere.

The greenhouse effect is gasses that trap heat into the atmosphere. There are three top greenhouse gases and they are Carbon dioxide (CO2), Methane (CH4), Nitrous oxide (N2O), Fluorinated gases. There are many reasons as to why the greenhouse effect rate has went up over the last couple of years and it’s because of humans. From all the resources that we have from using cars, and using electricity hurts the greenhouse effect more and more. Infrared radiation is electromagnetic radiation with longer wavelengths than those of visible light, extending from the nominal red edge of the visible spectrum at 700 nanometers (nm) to 1 mm.

 

  

Question

·         Is the temperature of a wet surface different from a dry surface? Why or why not?

·         How does cloud cover affect surface temperatures?

 

Abstract

We went outside and took surface temperatures with the IRT and then put the data in a graph and made a power point.

Hypothesis

·         Yes, ground is more dense/slippery when wet.

·         Cloud cover makes the surface temperature colder.

Procedure

·         We went outside and use IRT scanners to can the surface temperatures.

·         Wrote down the temperatures

·         While taking that we also timed each one to see the difference it would make.

·         Got all the data together

Collect Results

We will have to look at the times that the temps. Was taking, how much cloud cover was that day, if the surface of the ground was wet or dry and that will tell if the surface changes when the ground is wet vs. dry weather.

 

Analysis

 



	temp	cloud	wet/dry
11:09 AM	42.7	90	dry
11:10 AM	34.5	10	dry
9:13 AM	13.8	25	wet
9:12 AM	17.1	100	wet

 

Conclusion

Looking over the data it turns out that the surface temp was colder when it was wet and had more cloud cover then when there was little cloud cover and hotter.

Presentation

Brief Power Point based on your report and delivered to the class

 

 

 

 

 

 

 

 

 

movie question

 

how did Joe reach speeds of 60mph during free fall from 90 miles up when terminal velocity is 120mph.?







 

 

 

he fell faster because he fell from the stratosphere instead of the troposphere.

 

 



 



surface temp. project

https://docs.google.com/viewer?a=v&pid=gmail&attid=0.1&thid=141c1d647e17ecae&mt=application/vnd.openxmlformats-officedocument.wordprocessingml.document&url=https://mail.google.com/mail/?ui%3D2%26ik%3Df69f9f71a3%26view%3Datt%26th%3D141c1d647e17ecae%26attid%3D0.1%26disp%3Dsafe%26realattid%3Df_hmupbdhq0%26zw&sig=AHIEtbQ3RTPHMyxbp79TGIK7ojYFjlv9Jw

notes

 

 

 

• the atmosphere is how the earth is protected from harful rays and extreme tempatures.
• also the earth made the ozone layer that also help protect from harmfull rays.
• there are 5 layers of the atmosphere
• which are troposphere, stratosphere, mesosphere, thermosphere.
•  tropospher is the lowest layer
• weather happens in the tropospher
• most of the heat the is in the tropospher comes from the earth
• stratosphere is right above the tropospher
• air crafts fly in the stratospher
• ozone layer is in the stratosphere
• mesosphere is above the stratospher
• mesosphere is the coldest layer
• rocks and meteors burn up here
• thermosphere is the thickest layer
• exosphere is extremly thin
• outter layer where space shuttles orbits
• molecules are more densely pack at the surface
• our life depends on the ozone layer
  the ozone layer helps protect us from harm full rays and hot tempatuers
• either the sun energy is absorbed or reflected
• when the sun has energy it is more likely that anything that is dark in color will absorb the heat and anything that is light in color will reflect the energy back to space.

 

 

solar system presentation.