What is the correct increasing order of Global Warming Potential of Following Green House Gases?
I. Methane
II. Fluorinated Gases
III. Carbon dioxide
IV. Nitrous Oxide
Select the correct answer using the codes given below:
Greenhouse Gases Global Warming Potential Order
This question asks us to arrange four specific greenhouse gases based on their Global Warming Potential (GWP) in increasing order. The Global Warming Potential (GWP) is a measure of how much heat a greenhouse gas traps in the atmosphere over a specific time horizon relative to carbon dioxide (CO<0xE2><0x82><0x82>). A higher GWP means the gas traps more heat.
Understanding Greenhouse Gas GWPs
The standard time horizon used for comparing GWPs is 100 years. Let's look at the approximate 100-year GWP values for the gases mentioned:
- I. Methane (CH<0xE2><0x82><0x84>): Has a GWP significantly higher than CO<0xE2><0x82><0x82>. Its 100-year GWP is around 28-34.
- II. Fluorinated Gases (F-gases): This group includes gases like hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), sulfur hexafluoride (SF<0xE2><0x82><0x86>), and nitrogen trifluoride (NF<0xE2><0x82><0x83>). These gases have extremely high GWPs, often ranging from hundreds to tens of thousands. For example, SF<0xE2><0x82><0x86> has a GWP of approximately 22,800.
- III. Carbon dioxide (CO<0xE2><0x82><0x82>): This is the baseline gas used for comparison. Its GWP is defined as 1.
- IV. Nitrous Oxide (N<0xE2><0x82><0x82>O): This gas has a much higher GWP than methane. Its 100-year GWP is around 265-298.
Comparing GWP Values
Based on the typical 100-year GWP values:
| Greenhouse Gas | Symbol/Type | Approx. 100-year GWP | Label |
|---|---|---|---|
| Carbon dioxide | CO<0xE2><0x82><0x82> | 1 | III |
| Methane | CH<0xE2><0x82><0x84> | ~28 | I |
| Nitrous Oxide | N<0xE2><0x82><0x82>O | ~265 | IV |
| Fluorinated Gases | (e.g., SF<0xE2><0x82><0x86>) | Thousands to Tens of Thousands | II |
Determining the Correct Increasing Order
Arranging the gases from the lowest GWP to the highest GWP:
- Carbon dioxide (III) - GWP = 1
- Methane (I) - GWP = ~28
- Nitrous Oxide (IV) - GWP = ~265
- Fluorinated Gases (II) - GWP = Very High (thousands+)
Therefore, the correct increasing order is III, I, IV, II.
Important Questions from Climate Change
- "Dendro climatology" deals with:
- Which of the following missions cover the National Action Plan on Climatic Change (NAPCC)?
i. National Solar Mission
ii. National Mission for a Green India
iii. National Green Hydrogen Mission
iv. National Mission on Sustainable Habitat
v. National Bio-Fuel Mission
Select the correct answer using the code given below: - Consider the following statements:
Statement 1: Climate change is influenced by both natural and anthropogenic factors.
Statement 2: The Amazon rainforest is often referred to as the "lungs of the Earth".
Statement 3: Current extinction rates are comparable to historical background rates.
Statement 4: Urbanization can negatively impact local biodiversity.
The correct statement/s is/are: Consider the following statements regarding Carbon Pricing:
I. Carbon pricing is a policy tool that puts a financial cost on greenhouse gas emissions, primarily methane
II. It works by making emitters pay for the environmental damage caused by their pollution, encouraging them to reduce emissions
Which of the statements given above is/are correct?
