大气甲烷的源和汇及其浓度的观测模拟研究进展

Advances in the Research on Sources and Sinks of CH_4 and Observations and Simulations of CH_4 Concentrations

甲烷作为仅次于二氧化碳的长寿命温室气体,不仅影响着地球上的辐射平衡,它在大气中的化学反应对大气的氧化清洁能力和对流层臭氧浓度也起着至关重要的作用。因此,系统全面地研究大气甲烷源汇和分布特征对了解空气质量和气候变化具有重要的科学意义。从甲烷的源和汇、浓度的观测和模拟几方面介绍了国内外的大气甲烷的研究进展以及存在的问题。

As a long-lived anthropogenic greenhouse gas, second only to CO2, methane（CH4） influences the radiative balance of the Earth. CH4 also plays a critical role in atmospheric chemistry by affecting the oxidizing capacity of the atmosphere. Consequently, it is important to get a clear understanding of the characteristics of atmospheric CH4, especially for the countries where both air quality and climate change are of great concern. In this paper, we have discussed related researches and issues about the sources and sinks, observations and simulations of atmospheric CH4.