Climate Change Data Portal
| DOI | 10.1016/j.atmosres.2017.10.002 |
| Light-absorbing impurities in a southern Tibetan Plateau glacier: Variations and potential impact on snow albedo and radiative forcing | |
| Li X.; Kang S.; Zhang G.; Qu B.; Tripathee L.; Paudyal R.; Jing Z.; Zhang Y.; Yan F.; Li G.; Cui X.; Xu R.; Hu Z.; Li C. | |
| 发表日期 | 2018 |
| ISSN | 01698095 |
| 卷号 | 200 |
| 英文摘要 | Light-absorbing impurities (LAIs), such as organic carbon (OC), black carbon (BC), and mineral dust (MD), deposited on the surface snow of glacier can reduce the surface albedo. As there exists insufficient knowledge to completely characterize LAIs variations and difference in LAIs distributions, it is essential to investigate the behaviors of LAIs and their influence on the glaciers across the Tibetan Plateau (TP). Therefore, surface snow and snowpit samples were collected during September 2014 to September 2015 from Zhadang (ZD) glacier in the southern TP to investigate the role of LAIs in the glacier. LAIs concentrations were observed to be higher in surface aged snow than in the fresh snow possibly due to post-depositional processes such as melting or sublimation. The LAIs concentrations showed a significant spatial distribution and marked negative relationship with elevation. Impurity concentrations varied significantly with depth in the vertical profile of the snowpit, with maximum LAIs concentrations frequently occurred in the distinct dust layers which were deposited in non-monsoon, and the bottom of snowpit due to the eluviation in monsoon. Major ions in snowpit and backward trajectory analysis indicated that regional activities and South Asian emissions were the major sources. According to the SNow ICe Aerosol Radiative (SNICAR) model, the average simulated albedo caused by MD and BC in aged snow collected on 31 May 2015 accounts for about 13% ± 3% and 46% ± 2% of the albedo reduction. Furthermore, we also found that instantaneous RF caused by MD and BC in aged snow collected on 31 May 2015 varied between 4–16 W m− 2 and 7–64 W m− 2, respectively. The effect of BC exceeds that of MD on albedo reduction and instantaneous RF in the study area, indicating that BC played a major role on the surface of the ZD glacier. © 2017 Elsevier B.V. |
| 英文关键词 | Albedo reduction; Glacier melting; Light-absorbing impurities; Radiative forcing; Tibetan Plateau |
| URL | https://www2.scopus.com/inward/record.uri?eid=2-s2.0-85033609267&doi=10.1016%2fj.atmosres.2017.10.002&partnerID=40&md5=7f1d230d3a32e17cb66fd0fd98e88028 |
| 语种 | 英语 |
| scopus关键词 | Atmospheric radiation; Atmospheric thermodynamics; Cerium compounds; Dust; Impurities; Melting; Organic carbon; Solar radiation; Albedo reduction; Backward trajectory analysis; Depositional process; Glacier melting; Impurity concentration; Potential impacts; Radiative forcings; Tibetan Plateau; Snow; albedo; glacier; melting; organic carbon; radiative forcing; China; Qinghai-Xizang Plateau |
| 来源期刊 | Atmospheric Research
 |
| 来源机构 | 中国科学院西北生态环境资源研究院 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/77345 |
| 推荐引用方式 GB/T 7714 | Li X.； Kang S.； Zhang G.； Qu B.； Tripathee L.； Paudyal R.； Jing Z.； Zhang Y.； Yan F.； Li G.； Cui X.； Xu R.； Hu Z.； Li C.. Light-absorbing impurities in a southern Tibetan Plateau glacier: Variations and potential impact on snow albedo and radiative forcing[J]. 中国科学院西北生态环境资源研究院,2018,200. |
| APA | Li X.； Kang S.； Zhang G.； Qu B.； Tripathee L.； Paudyal R.； Jing Z.； Zhang Y.； Yan F.； Li G.； Cui X.； Xu R.； Hu Z.； Li C..(2018).Light-absorbing impurities in a southern Tibetan Plateau glacier: Variations and potential impact on snow albedo and radiative forcing.Atmospheric Research,200. |
| MLA | Li X.； Kang S.； Zhang G.； Qu B.； Tripathee L.； Paudyal R.； Jing Z.； Zhang Y.； Yan F.； Li G.； Cui X.； Xu R.； Hu Z.； Li C.."Light-absorbing impurities in a southern Tibetan Plateau glacier: Variations and potential impact on snow albedo and radiative forcing".Atmospheric Research 200(2018). |
| 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。
