Carbon Footprint Essay

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EFFECTS & CONTRIBUTION
1.1 CARBON FOOTPRINT 2.1.1. What is carbon foot print

Carbon foot print is a handy tool for the calculation of the total carbon dioxide emission or GHG form any entity which is responsible. It is defined as measure of impact of different activities on the environment in terms of green house gases produced (Sridevi). The total greenhouse gas emission can be expressed as a term of CO2 Equivalent. It can be used for analyzing for the use of national or sector, cooperate or household or individual level. 2.1.2 Importance of carbon footprint Carbon footprint models are being used to manage carbon dioxide emission. Carbon footprint is an increasingly popular concept: for labeling, marketing, finance and
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In this process of calculating the global warming potential, we compare the amount of heat trapped by a fixed mass of GHG with respect to the heat trapped by the same mass of CO2.
This is the process of normalizing the heat trapping capacity of a gas with respect to carbon dioxide equivalent. Generally GWP is calculated for a fixed period of time i.e. 20, 100, and 500 years. For example, the 100year GWP of methane is 21, which means if the same mass of methane and carbon dioxide were introduced into the atmosphere, that methane will trap 21 times more heat than the carbon dioxide over the next 100 year.

Table 3 List of GWP of green house gas

GREEN HOUSE GAS GWP
CO2 1
CH4 25
N2O 298
HFC’s 124-14800
SF6 22800
Source: Inter Government Panel on Climate change (IPCC), 2007
Global warming effect of any GHG is calculated on three bases:
1. Abundance of the gas in the atmosphere
2. Global warming potential
3. Life cycle of the gas

Table 4 Life cycle of different green house gases emitted from transport sector

Green House Gas Life time
Carbon dioxide 50-100
Methane 12
Nitrous oxide
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Ramachandra, Shwetmala, 2009: Emissions from India’s transport sector: State wise synthesis These six states account for 51.8% of the CO2 emissions from road transport (2003-2004)
Table 6 Emission from vehicular transport of metropolitan cities (2003-04) City Geographical area
(Km2) CO2 (Mg/km2 ) CO
(Mg/km2) CH4 (Mg/km2) Hyderabad 172.7 18 258.86 281.47 13.26 Visakhapatnam 182.7 5034.01 77.6 3.66 Patna 108.34 18 244.82 189.16 5.91 Ahmedabad 281.08 12 438.69 165.52 6.67 Delhi 431.09 20 843.82 284.43 15.56 Bangalore 226.24 32 013.25 405.25 16.14 Jaipur 484.64 6571.53 72.76 2.83 Chennai 174 34 903.50 429.13 18.99 Kolkata 186.23 22 402.15 213.94 9.1 Source: T.V. Ramachandra, Shwetmala, 2009: Emissions from India’s transport sector: State wise synthesis
Table 7 Green house gas emission from transport sector in major cities (2009-10) Source: Sridevi, H.,Shreejith,K.,(2014): Comparative study of green house gas emission from major cities of

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