期刊
GEOPHYSICAL RESEARCH LETTERS
卷 33, 期 21, 页码 -出版社
AMER GEOPHYSICAL UNION
DOI: 10.1029/2006GL026403
关键词
-
High frequency monitoring of hydrofluorocarbons (HFCs) and some other halocarbons in the atmosphere has been performed at Hateruma Island (lat. 24.1 degrees N, long. 123.8 degrees E), a background site in east Asia. The observed concentrations showed occasional short-term enhancement events over hours to days as well as a clear seasonal variation, being lower in summer than in other seasons. We found that HFC-23 enhancements were closely related to the air transport from China. Using a tagged simulation from three-dimensional transport model and a tracer-ratio technique, the emission rate of HFC-23 from China was estimated to amount to 10 Gg (= 10 000 metric tonnes) per year with an uncertainty of 50%, which could account for two thirds of the total global emission. HFCs emitted from Japan, Korea, and Taiwan were characterized by a predominance of HFC-134a with very little contribution of HFC-23.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据