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http://dx.doi.org/10.5572/KOSAE.2014.30.4.387

Estimation of The Global Warming Potential of Fluorinated Green House Gases  

Kim, Jihye (DuksanTechopia)
Lee, Jeongsoon (Center for Gas Analysis, Korean Research Institute of Standards and Science (KRISS))
Publication Information
Journal of Korean Society for Atmospheric Environment / v.30, no.4, 2014 , pp. 387-397 More about this Journal
Abstract
This work aims at estimating global warming potentials (GWP) of $CF_3Br$ and HFC-134a among green house gases. It has been reported that they have much higher GWP than $CO_2$ in the atmosphere. $CF_3Br$, halon 1301 which is well known to be a fire extinguisher, as one of the bromine-containing halons has been banned since 2003 due to destruction of ozone. HFCs, a kind of chiller which replaced chlorofluorocarbons (CFCs) are one of greenhouse gases regulated by the Kyoto Protocol. In this study, we produced GWPs of $CF_3Br$ and HFC-134a by calculating a life time and measuring an absorption cross section to obtain a radiative forcing (RF). Their absorption cross sections were measured by using Fourier-transformed infrared spectroscopy (FTS) with a gas cell filled with their certified reference materials at room temperature. As a result, the RFs of $CF_3Br$ and HFC-134a were 0.32 and $0.168Wm^{-2}ppb^{-1}$, respectively and the GWPs were calculated as 7989, 6076, 3903 for $CF_3Br$ and 3855, 1300, 656 for HFC-134a for the time horizon of 20, 100, 500 years, respectively. Overall, uncertainty of the estimated GWPs can be estimated to be about 2.6%. Our results were compared with those proposed by the previous studies (IPCC, 2007; WMO, 1999).
Keywords
FTIR; Radiative forcing; Global warming potential; Absorption cross section; Greenhouse gas;
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