WMO / GAW coordinates systematic observation and analysis of greenhouse gases and trace components. By the end of 2013, it has included 29 global background stations, more than 400 regional background stations and more than 100 contribution stations. Four atmospheric base stations of China Meteorological Administration (Waliguan, Qinghai, Shangdianzi, Zhejiang, and Longfengshan, Heilongjiang) have been listed in WMO / GAW atmospheric base station series, and the observation analysis system and calibration system that are in line with international standards have been preliminarily established. Part of the observational data from Waliguan station in Qinghai Province and Shangdianzi station in Beijing have been entered into the world data center and global database of greenhouse gases, used in the global greenhouse gas bulletin, and used in a number of scientific assessments such as WMO, UNEP and IPCC. This data set includes the observation data of the global atmospheric background Observatory in Waliguan, China, mainly including the monthly average data of O18 isotope bottle sampling in carbon dioxide from 1990 to 2012.
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