Atmospheric sulfur isotopic anomalies recorded at Mt. Everest across the Anthropocene
文献类型：期刊论文
| 作者 | Kang, SC (Kang, Shichang)3,4,5; Li, CL (Li, Chaoliu)4,6; Thiemens, MH (Thiemens, Mark H.)1; Hsu, SC (Hsu, Shih-Chieh)2; Lin, M (Lin, Mang)1,2,7; Shaheen, R (Shaheen, Robina)1 |
| 刊名 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
 |
| 出版日期 | 2018-07-03 |
| 卷号 | 115期号:27页码:6964-6969 |
| ISSN号 | 0027-8424 |
| 关键词 | MASS-INDEPENDENT FRACTIONATION MICROBIAL SULFATE REDUCTION HIMALAYAN-TIBETAN PLATEAU ARCHEAN ATMOSPHERE CARBONYL SULFIDE BARITE DEPOSITS LAKE-SEDIMENTS ASIAN MONSOON BLACK CARBON AEROSOL |
| DOI | 10.1073/pnas.1801935115 |
| 英文摘要 | Increased anthropogenic-induced aerosol concentrations over the Himalayas and Tibetan Plateau have affected regional climate, accelerated snow/glacier melting, and influenced water supply and quality in Asia. Although sulfate is a predominant chemical component in aerosols and the hydrosphere, the contributions from different sources remain contentious. Here, we report multiple sulfur isotope composition of sedimentary sulfates from a remote freshwater alpine lake near Mount Everest to reconstruct a two-century record of the atmospheric sulfur cycle. The sulfur isotopic anomaly is utilized as a probe for sulfur source apportionment and chemical transformation history. The nineteenthcentury record displays a distinct sulfur isotopic signature compared with the twentieth-century record when sulfate concentrations increased. Along with other elemental measurements, the isotopic proxy suggests that the increased trend of sulfate is mainly attributed to enhancements of dust-associated sulfate aerosols and climate-induced weathering/erosion, which overprinted sulfur isotopic anomalies originating from other sources (e.g., sulfates produced in the stratosphere by photolytic oxidation processes and/or emitted from combustion) as observed in most modern tropospheric aerosols. The changes in sulfur cycling reported in this study have implications for better quantification of radiative forcing and snow/glacier melting at this climatically sensitive region and potentially other temperate glacial hydrological systems. Additionally, the unique Delta S-33-delta S-34 pattern in the nineteenth century, a period with extensive global biomass burning, is similar to the Paleoarchean (3.6-3.2 Ga) barite record, potentially providing a deeper insight into sulfur photochemical/thermal reactions and possible volcanic influences on the Earth's earliest sulfur cycle. |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| 出版者 | NATL ACAD SCIENCES |
| WOS记录号 | WOS:000437107000056 |
| 源URL | [http://ir.itpcas.ac.cn/handle/131C11/8600]  |
| 专题 | 青藏高原研究所_图书馆 |
| 作者单位 | 1.Univ Calif San Diego, Dept Chem & Biochem, La Jolla, CA 92093 USA; 2.Acad Sinica, Res Ctr Environm Changes, Taipei 115, Taiwan; 3.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Gansu, Peoples R China; 4.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China; 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 6.Chinese Acad Sci, Key Lab Tibetan Environm Changes & Land Surface P, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China; 7.Tokyo Inst Technol, Sch Mat & Chem Technol, Yokohama, Kanagawa 2668502, Japan. |
| 推荐引用方式 GB/T 7714 | Kang, SC ,Li, CL ,Thiemens, MH ,et al. Atmospheric sulfur isotopic anomalies recorded at Mt. Everest across the Anthropocene[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA ,2018,115(27):6964-6969. |
| APA | Kang, SC ,Li, CL ,Thiemens, MH ,Hsu, SC ,Lin, M ,&Shaheen, R .(2018).Atmospheric sulfur isotopic anomalies recorded at Mt. Everest across the Anthropocene.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA ,115(27),6964-6969. |
| MLA | Kang, SC ,et al."Atmospheric sulfur isotopic anomalies recorded at Mt. Everest across the Anthropocene".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 115.27(2018):6964-6969. |
入库方式： OAI收割
来源：青藏高原研究所
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