Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-4257-2019 |
Permafrost nitrous oxide emissions observed on a landscape scale using the airborne eddy-covariance method | |
Jordan Wilkerson, Ronald Dobosy, David S. Sayres, Claire Healy, Edward Dumas, Bruce Baker, and James G. Anderson | |
2019-04-03 | |
发表期刊 | Atmospheric Chemistry and Physics |
出版年 | 2019 |
英文摘要 | The microbial by-product nitrous oxide (N2O), a potent greenhouse gas and ozone depleting substance, has conventionally been assumed to have minimal emissions in permafrost regions. This assumption has been questioned by recent in situ studies which have demonstrated that some geologic features in permafrost may, in fact, have elevated emissions comparable to those of tropical soils. However, these recent studies, along with every known in situ study focused on permafrost N2O fluxes, have used chambers to examine small areas (<50 m2). In late August 2013, we used the airborne eddy-covariance technique to make in situ N2O flux measurements over the North Slope of Alaska from a low-flying aircraft spanning a much larger area: around 310 km2. We observed large variability of N2O fluxes with many areas exhibiting negligible emissions. Still, the daily mean averaged over our flight campaign was 3.8 (2.2–4.7) mg N2O m−2 d−1 with the 90 % confidence interval shown in parentheses. If these measurements are representative of the whole month, then the permafrost areas we observed emitted a total of around 0.04–0.09 g m−2 for August, which is comparable to what is typically assumed to be the upper limit of yearly emissions for these regions. |
领域 | 地球科学 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/287734 |
专题 | 地球科学 |
推荐引用方式 GB/T 7714 | Jordan Wilkerson, Ronald Dobosy, David S. Sayres, Claire Healy, Edward Dumas, Bruce Baker, and James G. Anderson. Permafrost nitrous oxide emissions observed on a landscape scale using the airborne eddy-covariance method[J]. Atmospheric Chemistry and Physics,2019. |
APA | Jordan Wilkerson, Ronald Dobosy, David S. Sayres, Claire Healy, Edward Dumas, Bruce Baker, and James G. Anderson.(2019).Permafrost nitrous oxide emissions observed on a landscape scale using the airborne eddy-covariance method.Atmospheric Chemistry and Physics. |
MLA | Jordan Wilkerson, Ronald Dobosy, David S. Sayres, Claire Healy, Edward Dumas, Bruce Baker, and James G. Anderson."Permafrost nitrous oxide emissions observed on a landscape scale using the airborne eddy-covariance method".Atmospheric Chemistry and Physics (2019). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论