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DOI | 10.1073/pnas.1910485117 |
Early atmospheric contamination on the top of the Himalayas since the onset of the European Industrial Revolution | |
Gabrielli, Paolo1,2; Wegner, Anna1; Sierra-Hernandez, M. Roxana1; Beaudon, Emilie1; Davis, Mary1; Barker, Joel D.1,2; Thompson, Lonnie G.1,2 | |
2020-02-25 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2020 |
卷号 | 117期号:8页码:3967-3973 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Because few ice core records from the Himalayas exist, understanding of the onset and timing of the human impact on the atmosphere of the "roof of the world" remains poorly constrained. We report a continuous 500-y trace metal ice core record from the Dasuopu glacier (7,200 m, central Himalayas), the highest drilling site on Earth. We show that an early contamination from toxic trace metals, particularly Cd, Cr, Mo, Ni, SB and Zn, emerged at high elevation in the Himalayas at the onset of the European Industrial Revolution (similar to 1780 AD). This was amplified by the intensification of the snow accumulation (+50% at Dasuopu) likely linked to the meridional displacement of the winter westerlies from 1810 until 1880 AD. During this period, the flux and crustal enrichment factors of the toxic trace metals were augmented by factors of 2 to 4 and 2 to 6, respectively. We suggest this contamination was the consequence of the long-range transport and wet deposition of fly ash from the combustion of coal (likely from Western Europe where it was almost entirely produced and used during the 19th century) with a possible contribution from the synchronous increase in biomass burning emissions from deforestation in the Northern Hemisphere. The snow accumulation decreased and dry winters were reestablished in Dasuopu after 1880 AD when lower than expected toxic metal levels were recorded. This indicates that contamination on the top of the Himalayas depended primarily on multidecadal changes in atmospheric circulation and secondarily on variations in emission sources during the last 200 y. |
英文关键词 | ice cores trace metals paleoenvironment monsoon North Atlantic Oscillation |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000516771500018 |
WOS关键词 | ICE-CORE RECORD ; TIBETAN PLATEAU ; TRACE-METALS ; CENTRAL-ASIA ; EMISSIONS ; POLLUTION ; BIOMASS ; COAL ; PB ; COMBUSTION |
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/249599 |
专题 | 地球科学 |
作者单位 | 1.Ohio State Univ, Byrd Polar & Climate Res Ctr, Columbus, OH 43210 USA; 2.Ohio State Univ, Sch Earth Sci, Columbus, OH 43210 USA |
推荐引用方式 GB/T 7714 | Gabrielli, Paolo,Wegner, Anna,Sierra-Hernandez, M. Roxana,et al. Early atmospheric contamination on the top of the Himalayas since the onset of the European Industrial Revolution[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2020,117(8):3967-3973. |
APA | Gabrielli, Paolo.,Wegner, Anna.,Sierra-Hernandez, M. Roxana.,Beaudon, Emilie.,Davis, Mary.,...&Thompson, Lonnie G..(2020).Early atmospheric contamination on the top of the Himalayas since the onset of the European Industrial Revolution.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,117(8),3967-3973. |
MLA | Gabrielli, Paolo,et al."Early atmospheric contamination on the top of the Himalayas since the onset of the European Industrial Revolution".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 117.8(2020):3967-3973. |
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