Variation of atmospheric (CO2)-C-14 and its spatial distribution
文献类型：期刊论文
| 作者 | Wu, Shugang1,2,3 |
| 刊名 | JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
 |
| 出版日期 | 2017-04-01 |
| 卷号 | 169期号:2017页码:116-121 |
| 关键词 | Radiocarbon Activity Concentration Atmospheric (Co2)-c-14 |
| DOI | 10.1016/j.jenvrad.2017.01.012 |
| 文献子类 | Article |
| 英文摘要 | The atmospheric (CO2)-C-14 is usually presented in the Delta C-14 notation, which cannot reflect its absolute quantity change. This article presents the atmospheric radiocarbon activity concentrations (a(acn), reported in mBq/m(3)) in recent years at nine observation stations. The a(acn) at Schauinsland decrease from 1977 to 1993 but between 1993 and 2003 keeps at a relative steady state. Atmospheric a(acn)s were higher in the northern hemisphere than that in the southern hemisphere. The a(acn)s in the northern hemisphere show clear seasonal cycle with higher value in winter and lower value in summer, while this seasonality is not obvious in the southern hemisphere. Vegetation plays as a role of sink in summer and a role of source in winter, and atmosphere-biosphere radiocarbon exchange might be the main driver of the a(acn)s seasonality. The annual mean a(acn)s in both hemispheres show slightly increasing trends since 2002, which may be mainly caused by decreasing air-sea C-14 flux as the air-sea C-14 gradient decline. (C) 2017 Elsevier Ltd. All rights reserved. |
| WOS关键词 | TROPOSPHERIC (CO2)-C-14 ; BOMB C-14 ; CARBON-DIOXIDE ; CENTRAL-EUROPE ; RADIOCARBON ; CO2 ; EXCHANGE ; SYSTEM |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000398752300015 |
| 源URL | [http://ir.ieecas.cn/handle/361006/5487]  |
| 专题 | 地球环境研究所_加速器质谱中心 |
| 作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, 97 Yanxiang Rd, Xian 710061, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710061, Peoples R China 3.Xian AMS Ctr, Xian 710061, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Shugang. Variation of atmospheric (CO2)-C-14 and its spatial distribution[J]. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY,2017,169(2017):116-121. |
| APA | Wu, Shugang.(2017).Variation of atmospheric (CO2)-C-14 and its spatial distribution.JOURNAL OF ENVIRONMENTAL RADIOACTIVITY,169(2017),116-121. |
| MLA | Wu, Shugang."Variation of atmospheric (CO2)-C-14 and its spatial distribution".JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 169.2017(2017):116-121. |
入库方式： OAI收割
来源：地球环境研究所
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