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The effectiveness of any greenhouse gas molecule will depend on which of the following factors?
Magnitude of the increase in its concentration
Lifetime in the atmosphere
Wavelength of the radiation it absorbs
Select the correct answer using the code given below:
- a)1 and 2 only
- b)2 and 3 only
- c)1 and 3 only
- d)1, 2 and 3
Correct answer is option 'D'. Can you explain this answer?
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The effectiveness of any greenhouse gas molecule will depend on which...
Factors affecting the effectiveness of greenhouse gases
Magnitude of the increase in concentration:
- The magnitude of the increase in concentration of a greenhouse gas is an important factor in determining its effectiveness. The higher the concentration of a greenhouse gas, the more effectively it can trap heat in the Earth's atmosphere. This is because greenhouse gases absorb and re-emit infrared radiation, which is responsible for the greenhouse effect. The greater the concentration, the more infrared radiation can be trapped, leading to a stronger greenhouse effect.
Lifetime in the atmosphere:
- The lifetime of a greenhouse gas molecule in the atmosphere is another crucial factor in determining its effectiveness. Greenhouse gases can have different lifetimes, ranging from a few days to several centuries. The longer a greenhouse gas remains in the atmosphere, the more time it has to trap heat and contribute to the greenhouse effect. For example, carbon dioxide (CO2) has a long atmospheric lifetime of several centuries, while methane (CH4) has a shorter lifetime of around 12 years. Therefore, although methane is a more potent greenhouse gas on a per-molecule basis, its shorter lifetime makes it less effective in the long run compared to carbon dioxide.
Wavelength of the radiation it absorbs:
- The wavelength of the radiation a greenhouse gas absorbs is also a crucial factor in its effectiveness. Different greenhouse gases absorb radiation at different wavelengths, and the wavelengths at which a gas absorbs radiation determine its ability to trap heat. For instance, carbon dioxide absorbs radiation in the mid-infrared range, while methane absorbs radiation in the near-infrared range. The absorption of different wavelengths of radiation by different greenhouse gases allows them to collectively trap a wide range of infrared radiation, contributing to the overall greenhouse effect.
Conclusion:
- In conclusion, the effectiveness of a greenhouse gas molecule depends on the magnitude of the increase in its concentration, its lifetime in the atmosphere, and the wavelength of the radiation it absorbs. These factors determine the ability of greenhouse gases to trap heat in the Earth's atmosphere and contribute to global warming. Understanding these factors is crucial for assessing the impact of different greenhouse gases on climate change and developing strategies for mitigating their effects.
Magnitude of the increase in concentration:
- The magnitude of the increase in concentration of a greenhouse gas is an important factor in determining its effectiveness. The higher the concentration of a greenhouse gas, the more effectively it can trap heat in the Earth's atmosphere. This is because greenhouse gases absorb and re-emit infrared radiation, which is responsible for the greenhouse effect. The greater the concentration, the more infrared radiation can be trapped, leading to a stronger greenhouse effect.
Lifetime in the atmosphere:
- The lifetime of a greenhouse gas molecule in the atmosphere is another crucial factor in determining its effectiveness. Greenhouse gases can have different lifetimes, ranging from a few days to several centuries. The longer a greenhouse gas remains in the atmosphere, the more time it has to trap heat and contribute to the greenhouse effect. For example, carbon dioxide (CO2) has a long atmospheric lifetime of several centuries, while methane (CH4) has a shorter lifetime of around 12 years. Therefore, although methane is a more potent greenhouse gas on a per-molecule basis, its shorter lifetime makes it less effective in the long run compared to carbon dioxide.
Wavelength of the radiation it absorbs:
- The wavelength of the radiation a greenhouse gas absorbs is also a crucial factor in its effectiveness. Different greenhouse gases absorb radiation at different wavelengths, and the wavelengths at which a gas absorbs radiation determine its ability to trap heat. For instance, carbon dioxide absorbs radiation in the mid-infrared range, while methane absorbs radiation in the near-infrared range. The absorption of different wavelengths of radiation by different greenhouse gases allows them to collectively trap a wide range of infrared radiation, contributing to the overall greenhouse effect.
Conclusion:
- In conclusion, the effectiveness of a greenhouse gas molecule depends on the magnitude of the increase in its concentration, its lifetime in the atmosphere, and the wavelength of the radiation it absorbs. These factors determine the ability of greenhouse gases to trap heat in the Earth's atmosphere and contribute to global warming. Understanding these factors is crucial for assessing the impact of different greenhouse gases on climate change and developing strategies for mitigating their effects.
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The effectiveness of any greenhouse gas molecule will depend on which...
Option (d) is the correct answer.
All the statements are correct. The effectiveness of any given GHG molecule will depend on the magnitude of the increase in its concentration, its lifetime in the atmosphere and the wavelength of radiation that it absorbs. The more time the GHG molecule remains in the atmosphere, the longer it will take for earth‟s atmospheric system to recover from any change brought about by the latter. The effectiveness of a greenhouse gas is also measured by the Global Warming Potential (GWP).
The Global Warming Potential (GWP) was developed to allow comparisons of the global warming impacts of different gases. Specifically, it is a measure of how much energy the emissions of 1 ton of a gas will absorb over a given period of time, relative to the emissions of 1 ton of carbon dioxide (CO2). The larger the GWP, the more that a given gas warms the Earth compared to CO2 over that time period. The time period usually used for GWPs is 100 years.
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The effectiveness of any greenhouse gas molecule will depend on which of the following factors? Magnitude of the increase in its concentration Lifetime in the atmosphere Wavelength of the radiation it absorbs Select the correct answer using the code given below:a)1 and 2 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer?
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