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 Greenhouse
effect refers a mixture of several gases i.e. carbon-dioxide
(CO2), methane (CH4), nitrous-oxide (N2O), chlorofluorocarbon
(CFC), carbontetrachloride (CCl4),methyl-chloroform (CH3OCl),
carbon-monoxide (CO), and ozone (O3) at a 25-km high. This
mixture of gases will accumulate heat, which is similar
to plant greenhouse in the cold countries. Sunlight or solar
radiation, which is short wavelength but high frequency
will pass through this mixture of gases to the world, will
take things in the world warmer. Then it is followed by
long wavelength of solar radiation but low frequency pass
through, which make things even hotter.
|
Type
of Gas
|
Volume
(unit: 1,000,000)
|
Increase
Rate
(Annual %)
|
Source
of Gas
|
|
1. Carbon-dioxide (CO2)
|
344,000 |
0.40
|
80% &
20% combustion from coal + petroleum, and organic matter,
respectively.
|
| 2.
Methane |
1,650 |
1.00 |
Fermented rice paddy
field, animal pens & natural gas |
| 3.
Nitres-oxide |
304 |
0.25 |
Combustion from coal
+ petroleum, and fertilizer |
| 4.
Chlolofluor-carbon |
|
|
|
| 4.1
CFC - 11 |
0.23 |
5.00 |
Pressure gas for
refrigerator & foam production
|
| 4.2
CFC - 12 |
0.4 |
5.00 |
Pressure gas for refrigerator &
foam production |
5.
Carbontreta Chloride
|
0 |
1.00
|
Extinguish solution |
| 6.
Metil Chloroform |
1.125 |
7.00 |
Dissolved exhaust
valve |
| 7.
Carbon-monoxide (CO) |
Uncertainty |
0.20 |
|
Source: 1. World Resources
1990-91
2. Swad Nonsung. Natural Resources & Environment. 2000.
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