Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1807172115 |
Large changes in biomass burning over the last millennium inferred from paleoatmospheric ethane in polar ice cores | |
Nicewonger, Melinda R.1; Aydin, Murat1; Prather, Michael J.1; Saltzman, Eric S.1,2 | |
2018-12-04 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2018 |
卷号 | 115期号:49页码:12413-12418 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Biomass burning drives changes in greenhouse gases, climate-forcing aerosols, and global atmospheric chemistry. There is controversy about the magnitude and timing of changes in biomass burning emissions on millennial time scales from preindustrial to present and about the relative importance of climate change and human activities as the underlying cause. Biomass burning is one of two notable sources of ethane in the preindustrial atmosphere. Here, we present ice core ethane measurements from Antarctica and Greenland that contain information about changes in biomass burning emissions since 1000 CE (Common Era). The biomass burning emissions of ethane during the Medieval Period (1000-1500 CE) were higher than present day and declined sharply to a minimum during the cooler Little Ice Age (1600-1800 CE). Assuming that preindustrial atmospheric reactivity and transport were the same as in the modern atmosphere, we estimate that biomass burning emissions decreased by 30 to 45% from the Medieval Period to the Little Ice Age. The timing and magnitude of this decline in biomass burning emissions is consistent with that inferred from ice core methane stable carbon isotope ratios but inconsistent with histories based on sedimentary charcoal and ice core carbon monoxide measurements. This study demonstrates that biomass burning emissions have exceeded modern levels in the past and may be highly sensitive to changes in climate. |
英文关键词 | ethane ice cores biomass burning geologic hydrocarbons Little Ice Age |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000452124700039 |
WOS关键词 | GLOBAL ATMOSPHERIC ETHANE ; FOSSIL-FUEL ; FIRE EMISSIONS ; METHANE ; CLIMATE ; PREINDUSTRIAL ; HYDROXYL |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
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/205025 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USA; 2.Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA |
推荐引用方式 GB/T 7714 | Nicewonger, Melinda R.,Aydin, Murat,Prather, Michael J.,et al. Large changes in biomass burning over the last millennium inferred from paleoatmospheric ethane in polar ice cores[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2018,115(49):12413-12418. |
APA | Nicewonger, Melinda R.,Aydin, Murat,Prather, Michael J.,&Saltzman, Eric S..(2018).Large changes in biomass burning over the last millennium inferred from paleoatmospheric ethane in polar ice cores.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,115(49),12413-12418. |
MLA | Nicewonger, Melinda R.,et al."Large changes in biomass burning over the last millennium inferred from paleoatmospheric ethane in polar ice cores".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 115.49(2018):12413-12418. |
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