Estimates of major anthropogenic halocarbon emissions from China based on interspecies correlations
Estimates of major anthropogenic halocarbon emissions from China based on interspecies correlations
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DOI：
10.1016/j.atmosenv.2012.08.010
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发表时间：
2012-12
影响因子：
5
通讯作者：
X. Fang;Jing Wu;S. Su;Jiarui Han;Yusheng Wu;Yehong Shi;D. Wan;Xuezhi Sun;Jianbo Zhang
中科院分区：
文献类型：
--
作者：
X. Fang;Jing Wu;S. Su;Jiarui Han;Yusheng Wu;Yehong Shi;D. Wan;Xuezhi Sun;Jianbo Zhang
中国的卤化碳排放引起了政策制定者和学术界的极大兴趣。为了用种间相关性方法估算卤代碳排放，以往的研究采用CO、HCFC-22或其他物种作为参考示踪剂。然而，这些研究很少使用不同的参考示踪剂比较结果。2009/2010年，对中国北方某监测点的氯氟烃（CFCs）、氢氯氟烃（HCFCs）、氢氟烃（HFCs）和一氧化碳（CO）浓度进行了测定，并利用种间相关性方法估算了卤烃排放量。对估计的卤化碳排放量与两种参考示踪剂CO和HCFC-22之间的相关性进行了比较。结果表明，这两个物种是显着相关的大多数目标物种（P < 0.01），而HCFC-22表现出更好的相关性比CO。我们估计的2009年的卤代烃排放量同意与其他方法，包括逆建模和物种间相关性方法获得的结果的不确定性。不同研究（均采用自上而下的方法）对2001-2009年排放量的估计显示，中国的CFC-11和CFC-12排放量明显减少，而HCFC-22、HCFC-141 b和HCFC-142 b排放量增加。此外，氟氯化碳的臭氧消耗潜能值加权排放总量远远高于所报告的消费量，而氟氯烃对应物的排放量不超过所报告消费量的一半。这一结果表明，氟氯烃正在库存中积累，并且这些库存将在中国持续增加。
Halocarbon emissions from China are of great interest to both policy makers and academia. To estimate halocarbon emissions with interspecies correlation methods, previous studies adopted CO, HCFC-22 or other species as reference tracers. However, few of these studies compared the results using different reference tracers. In this study, chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), hydrofluorocarbons (HFCs) and carbon monoxide (CO) concentrations were measured at a monitoring site in northern China in 2009/2010, and halocarbon emissions were estimated using an interspecies correlation method. A comparison was performed of the correlations between estimated halocarbon emissions and two reference tracers, CO and HCFC-22. The results show that both species are significantly correlated with most of the target species (P < 0.01), whereas HCFC-22 shows better correlations than does CO. Our estimated halocarbon emissions for 2009 agree within uncertainties with results obtained with other approaches, including inverse modeling and interspecies correlation methods. The emissions for 2001–2009 estimated in different studies (all using top–down approaches) show a clear decrease in the emissions of CFC-11 and CFC-12 and an increase in the emissions of HCFC-22, HCFC-141b and HCFC-142b in China. Moreover, the combined Ozone Depletion Potential weighted emissions of CFCs are much greater than the reported consumption, whereas the emissions of HCFC counterparts are not more than one-half of the reported consumption. This result suggests that HCFCs are being accumulated in banks and that these banks will sustain elevated in China.