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Use the 20 year Global Warming Potential (GWP) values in the first Table to calculate an equivalent CO2 emission rate for worldwide greenhouse gas emissions as given in the second table. Assume that total CFCs are divided equally among the three compounds listed. What is the percentage contribution of actual CO2 emissions to the total equivalent CO2? What is the next most important greenhouse gas emission based on this analysis? How do these results compare to those using the 100-year GWP.

Use the 20 year Global Warming Potential (GWP) values in the first Table to calculate an equivalent CO2 emission rate for worldwide greenhouse gas emissions as given in the second table. Assume that total CFCs are divided equally among the three compounds listed. What is the percentage contribution of actual CO2 emissions to the total equivalent CO2? What is the next most important greenhouse gas emission based on this analysis? How do these results compare to those using the 100-year GWP.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Use the 20 year Global Warming Potential (GWP) values in the first Table to calculate an equivalent CO2 emission rate for worldwide greenhouse gas emissions as given in the second table. Assume that total CFCs are divided equally among the three compounds listed. What is the percentage contribution of actual CO2 emissions to the total equivalent CO2? What is the next most important greenhouse gas emission based on this analysis? How do these results compare to those using the 100-year GWP.

Table 12.9 Global warming potential of selected greenhouse gases. Global Warming Potential (Time Horizon) Atmospheric Life (Years) Chemical Substance Formula 20 Years 100 Years 500 Years CO, CO, 50-200 Methane CH, 12.2 56 21 6.5 Nitrous oxide N,O 120 280 310 170 Methylchloroform CH,CI, 5.4 360 110 35 CFC-11 CFCI, 50 5,000 4,000 1,400 CFC-12 CF,Cl 102 7,900 8,500 4,200 CFC-113 C,F,CI, 85 5,000 5,000 2,300 НCFC-22 CF,HCI 13.3 4,300 1,700 520 HCFC-141b C,FH,CI, 9.4 1,800 630 200 НСЕC-142b C,F,H,CI 19.5 4,200 2,000 630 HFC-125 C,HF, 32.6 4,600 2,800 920 HFC-134a C,H,F, 14.6 3,400 1,300 420 HFC-152a C,H,F; CF SF 1.5 460 140 42 Perfluoromethane 50,000 4,400 6,500 10,000 Sulfur hexafluoride 3200 16,300 23,900 34,900 The GWP for methane includes indirect effects of tropospheric ozone production and stratospheric water vapor production. Source: IPCC, 1996a.
Transcribed Image Text:Table 12.9 Global warming potential of selected greenhouse gases. Global Warming Potential (Time Horizon) Atmospheric Life (Years) Chemical Substance Formula 20 Years 100 Years 500 Years CO, CO, 50-200 Methane CH, 12.2 56 21 6.5 Nitrous oxide N,O 120 280 310 170 Methylchloroform CH,CI, 5.4 360 110 35 CFC-11 CFCI, 50 5,000 4,000 1,400 CFC-12 CF,Cl 102 7,900 8,500 4,200 CFC-113 C,F,CI, 85 5,000 5,000 2,300 НCFC-22 CF,HCI 13.3 4,300 1,700 520 HCFC-141b C,FH,CI, 9.4 1,800 630 200 НСЕC-142b C,F,H,CI 19.5 4,200 2,000 630 HFC-125 C,HF, 32.6 4,600 2,800 920 HFC-134a C,H,F, 14.6 3,400 1,300 420 HFC-152a C,H,F; CF SF 1.5 460 140 42 Perfluoromethane 50,000 4,400 6,500 10,000 Sulfur hexafluoride 3200 16,300 23,900 34,900 The GWP for methane includes indirect effects of tropospheric ozone production and stratospheric water vapor production. Source: IPCC, 1996a.
Table 12.1 Annual emissions of major greenhouse gases Annual Emissions (Muyr Greenhouse Gas World US. Carbon dioxide (CO,) 29,800 5.300 Methane (CH,) 375 31 Nitrous oxide (N,O) 5.7 0.5 CFC-11, -12, -113 0.7 0.1 HCFC-22 0.2 0.1 HFCS, PFCs, SF, n/a 0.034 * MI- millions of metric tons. CO, and all U.S data are for 1996. Other world data are for the early 1990 n/a - not available. Source: PCC, 1996a: USDOE, 1999, 1997 Marland et al, 1999
Transcribed Image Text:Table 12.1 Annual emissions of major greenhouse gases Annual Emissions (Muyr Greenhouse Gas World US. Carbon dioxide (CO,) 29,800 5.300 Methane (CH,) 375 31 Nitrous oxide (N,O) 5.7 0.5 CFC-11, -12, -113 0.7 0.1 HCFC-22 0.2 0.1 HFCS, PFCs, SF, n/a 0.034 * MI- millions of metric tons. CO, and all U.S data are for 1996. Other world data are for the early 1990 n/a - not available. Source: PCC, 1996a: USDOE, 1999, 1997 Marland et al, 1999
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