Twentieth century dust lows and the weakening of the westerly winds over the Tibetan Plateau (SCI)
文献类型：期刊论文
| 作者 | Grigholm B.; Mayewski P. A.; Kang S.; Zhang Y.; Morgenstern U.; Schwikowski M.; Kaspari S.; Aizen V.; Aizen E.; Takeuchi N. |
| 刊名 | Geophysical Research Letters
 |
| 出版日期 | 2015 |
| 卷号 | 42期号:7页码:2434-2441 |
| 英文摘要 | Understanding past atmospheric dust variability is necessary to put modern atmospheric dust into historical context and assess the impacts of dust on the climate. In Asia, meteorological data of atmospheric dust is temporally limited, beginning only in the 1950s. High-resolution ice cores provide the ideal archive for reconstructing preinstrumental atmospheric dust concentrations. Using a similar to 500year (1477-1982A.D.) annually resolved calcium (Ca) dust proxy from a Tibetan Plateau (TP) ice core, we demonstrate the lowest atmospheric dust concentrations in the past similar to 500years during the latter twentieth century. Declines in late nineteenth to twentieth century Ca concentrations significantly correspond with regional zonal wind trends from two reanalysis models, suggesting that the Ca record provides a proxy for the westerlies. Twentieth century warming and attendant atmospheric pressure reductions over northern Asia have potentially reduced temperature/pressure gradients resulting in lower zonal wind velocities and associated dust entrainment/transport in the past similar to 500years over the TP. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.casnw.net/handle/362004/27421]  |
| 专题 | 寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文 |
| 推荐引用方式 GB/T 7714 | Grigholm B.,Mayewski P. A.,Kang S.,et al. Twentieth century dust lows and the weakening of the westerly winds over the Tibetan Plateau (SCI)[J]. Geophysical Research Letters,2015,42(7):2434-2441. |
| APA | Grigholm B..,Mayewski P. A..,Kang S..,Zhang Y..,Morgenstern U..,...&Sneed S..(2015).Twentieth century dust lows and the weakening of the westerly winds over the Tibetan Plateau (SCI).Geophysical Research Letters,42(7),2434-2441. |
| MLA | Grigholm B.,et al."Twentieth century dust lows and the weakening of the westerly winds over the Tibetan Plateau (SCI)".Geophysical Research Letters 42.7(2015):2434-2441. |
入库方式： OAI收割
来源：寒区旱区环境与工程研究所
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