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Comparison of Atmospheric CO2, CH4, and CO at Two Stations in the Tibetan Plateau of China

机译:大气二氧化碳,CH4,CH4和CO在中国藏高高原的两个站点

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The research of greenhouse gases on the Tibetan Plateau is of great importance since its unique topography as the third pole of our planet and profound response on the climate change. In this study, we compared the concurrent observations of atmospheric carbon dioxide (CO2), methane (CH4), and carbon monoxide (CO) during 2010–2016 from two stations located on the Tibetan Plateau, which are Mt. Waliguan station (WLG), the only World Meteorological Organization/Global Atmosphere Watch global station in the inland of Eurasia, and Shangri‐La station, a Chinese national station (XGLL). Although both stations are located at remote area, the atmospheric CO2, CH4, and CO concentrations are frequently influenced by regional sources, especially for XGLL throughout the year and WLG in summer. Due to the unique topography and regional conditions, the atmospheric CH4 and CO at both stations display different trends with other sites in China, with higher values in summer. The atmospheric CO2, CH4, and CO at the XGLL mainly represent the conditions in regional scale. As the only World Meteorological Organization/Global Atmosphere Watch global station in the inland of Eurasia, the observation results at WLG can be used to represent the conditions on the Tibetan Plateau, but some of them are frequently influenced by the emissions from the cities located on the east or north east, and some even can be affect by emissions from the Ganges basin in autumn and winter, which should be treated with caution. By subtracting the influences of the cities, we updated the growth rate of 2.45?±?0.02?ppm?yr?1 for CO2, 8.2?±?0.1?ppb?yr?1 for CH4, and ?0.4?±?0.1?ppb?yr?1 for CO, compared to the prior estimation of 2.31?±?0.02?ppm?yr?1 for CO2, 8.1?±?0.1?ppb?yr?1 for CH4, and ?0.6?±?0.1?ppb?yr?1 for CO on the Tibetan Plateau.
机译:自独特地形作为我们星球的第三杆和对气候变化的深刻反应,因此对藏高平台的温室气体研究具有重要意义。在这项研究中,我们将大气二氧化碳(CO 2),甲烷(CH 4)和一氧化碳(CO)的并行观察与位于藏高原的两个站进行比较,这是Mt.Valiguan Station(WLG) ,唯一的世界气象组织/全球气氛在欧亚内陆内陆观看全球站,中国国家站(XGLL)和香格里拉站。虽然两个站都位于偏远地区,但大气二氧化碳,CH4和CO浓度经常受到区域来源的影响,特别是夏季全年和WLG的XGLL。由于地形和地区条件独特,两站站的大气CH4和CO与中国其他地点显示出不同的趋势,夏季的价值观更高。 XGLL的大气二氧化碳,CH4和CO主要代表区域规模的条件。作为唯一的世界气象组织/全球气氛在欧亚内陆地区的全球站,WLG的观察结果可用于代表西藏高原的条件,但其中一些经常受到城市排放的影响东方或东北部门,有些人甚至可以通过秋冬的恒河流域的排放影响,这应该谨慎对待。通过减去城市的影响,我们更新了2.45°的生长速率为2.45°?0.02?ppmα,8.2〜±0.1?PPBαα.1.对于CH4,α,α1≤1.0.4?±±0.1? PPB?1对于CO,与先前估计相比2.31≤0.02≤0≤0≤0≤0≤0.1°,8.1〜±0.1?ppbα,α1,α.0.6?0.6?0.6?±±0.1? PPB?YR?1在藏高的高原上有限公司。

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