Source: https://archive.ipcc.ch/ipccreports/tar/wg1/248.htm
Timestamp: 2020-04-05 07:37:17
Document Index: 179392687

Matched Legal Cases: ['§ 11', '§ 260', '§ 5', '§ 29', '§ 13', '§ 52', '§ 1', '§ 0', '§ 10000', '§ 3200']

The CO2 response function used in this report is the same as that in WMO (l999) and the SAR and is based on the �Bern� carbon cycle model (see Siegenthaler and Joos, 1992; Joos et al., l996) run for a constant future mixing ratio of CO2 over a period of 500 years. The Bern carbon cycle model was compared to others in IPCC (l994), where it was shown that different models gave a range of as much as 20% in the CO2 response, with the greatest differences occurring over time-scales greater than 20 years.
Gas Radiative efficiency (Wm-2 ppb-1) (from (b) unless indicated) Lifetime (years) (from Chapter 4 unless indicated) Global Warming Potential
Carbon dioxide CO2 See Section 6.12.2 See Section 6.12.2
Methane CH4 3.7x10-4 12.0*
Nitrous oxide N2O 3.1x10-3 114*
CFC-11 CCl3F 0.25 45
CFC-12 CCl2F2 0.32 100
CFC-13 CClF3 0.25 640 (c)
CFC-113 CCl2FCClF2 0.30 85
CFC-114 CClF2CClF2 0.31 300
CFC-115 CF3CClF2 0.18† 1700
HCFC-21 CHCl2F 0.17 2.0 (d)
HCFC-22 CHClF2 0.20§ 11.9
HCFC-123 CF3CHCl2 0.20 1.4 (a)
HCFC-124 CF3CHClF 0.22 6.1 (a)
HCFC-141b CH3CCl2F 0.14 9.3
HCFC-142b CH3CClF2 0.20 19
HCFC-225ca CF3CF2CHCl2 0.27 2.1 (a)
HCFC-225cb CClF2CF2CHClF 0.32 6.2 (a)
HFC-23 CHF3 0.16§ 260
HFC-32 CH2F2 0.09§ 5.0
HFC-41 CH3F 0.02 2.6
HFC-125 CHF2CF3 0.23§ 29
HFC-134 CHF2CHF2 0.18 9.6
HFC-134a CH2FCF3 0.15§ 13.8
HFC-143 CHF2CH2F 0.13 3.4
HFC-143a CF3CH3 0.13§ 52
HFC-152 CH2FCH2F 0.09 0.5
HFC-152a CH3CHF2 0.09§ 1.4
HFC-161 CH3CH2F 0.03 0.3
HFC-227ea CF3CHFCF3 0.30 33.0
HFC-236cb CH2FCF2CF3 0.23 13.2
HFC-236ea CHF2CHFCF3 0.30 10.0
HFC-236fa CF3CH2CF3 0.28 220
HFC-245ca CH2FCF2CHF2 0.23 5.9
HFC-245fa CHF2CH2CF3 0.28& 7.2
HFC-365mfc CF3CH2CF2CH3 0.21 (k) 9.9
HFC-43-10mee CF3CHFCHFCF2CF3 0.40 15
CH3CCl3 0.06 4.8
CCl4 0.13†† 35
CHCl3 0.11§ 0.51 (a)
CH3Cl 0.01 1.3 (b)
CH2Cl2 0.03 0.46 (a)
CH3Br 0.01 0.7 (b)
CH2Br2 0.01 0.41 (i)
CHBrF2 0.14 7.0 (i)
Halon-1211 CBrClF2 0.30 11
Halon-1301 CBrF3 0.32 65
CF3I 0.23 0.005 (a)
SF6 0.52 3200
CF4 0.08 50000
C2F6 0.26§ 10000
C3F8 0.26 2600
C4F10 0.33 2600
c-C4F8 0.32§ 3200
C5F12 0.41 4100
C6F14 0.49 3200
CH3OCH3 0.02 0.015 (e)
(CF3)2CFOCH3 0.31 3.4 (l)
(CF3)CH2OH 0.18 0.5 (m)
CF3CF2CH2OH 0.24 0.4 (m)
(CF3)2CHOH 0.28 1.8 (m)
HFE-125 CF3OCHF2 0.44 150
HFE-134 CHF2OCHF2 0.45 26.2
HFE-143a CH3OCF3 0.27 4.4
HCFE-235da2 CF3CHClOCHF2 0.38 2.6 (i)
HFE-245cb2 CF3CF2OCH3 0.32 4.3 (l)
HFE-245fa2 CF3CH2OCHF2 0.31 4.4 (i)
HFE-254cb2 CHF2CF2OCH3 0.28 0.22 (h)
HFE-347mcc3 CF3CF2CF2OCH3 0.34 4.5 (l)
HFE-356pcf3 CHF2CF2CH2OCHF2 0.39 3.2 (n)
HFE-374pc2 CHF2CF2OCH2CH3 0.25 5.0 (n)
HFE-7100 C4F9OCH3 0.31 5.0 (f)
HFE-7200 C4F9OC2H5 0.30 0.77 (g)
H-Galden 1040x CHF2OCF2OC2F4OCHF2 1.37(j) 6.3
HG-10 CHF2CHF2OCF2OCHF2 0.66 12.1
HG-01 CHFOCFCFCHFOCFCFOCHF2 0.87 6.2
From the formulas given in Table 6.2, with updated constants based on the IPCC (l990) expressions.
Note: For all gases destroyed by reaction with OH, updated lifetimes include scaling to CH3CCl3 lifetimes, as well as an estimate of the stratospheric destruction. See references below for rates along with Chapter 4 and WMO (l999).
(a) Taken from the SAR (b) Taken from WMO (l999) (c) Taken from WMO (1995) (d) DeMore et al. (1997)
(e) Good et al. (1998) (f) Wallington et al. (1997) (g) Christensen et al. (1998) (h) Heathfield et al. (1998a)
(i) Christidis et al. (1997) (j) Gierczak et al. (1996) (k) Barry et al. (1997) (l) Tokuhashi et al. (1999a)
(m) Tokuhashi et al. (1999b) (n) Tokuhashi et al. (2000)
† Myhre et al. (l998b) †† Jain et al. (2000) § Highwood and Shine (2000) & Ko et al. (l999).