Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL090924 |
Circadian rhythm of dune‐field activity | |
A. Gunn; M. Wanker; N. Lancaster; D. A. Edmonds; R. C. Ewing; D. J. Jerolmack | |
2021-01-26 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Wind‐blown sand dunes are both a consequence and a driver of climate dynamics; they arise under persistently dry and windy conditions, and are sometimes a source for airborne dust. Dune fields experience extreme daily changes in temperature, yet the role of atmospheric stability in driving sand transport and dust emission has not been established. Here we report on an unprecedented multi‐scale field experiment at the White Sands Dune Field (New Mexico, USA), where by measuring wind, humidity and temperature profiles in the atmosphere concurrently with sediment transport we demonstrate that a daily rhythm of sand and dust transport arises from non‐equilibrium atmospheric boundary layer convection. A global analysis of 45 dune fields confirms the connection found in situ between surface wind speed and diurnal temperature cycles, revealing an unrecognized climate feedback that may contribute to the growth of deserts on Earth and dune activity on Mars. |
领域 | 气候变化 |
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/313697 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | A. Gunn,M. Wanker,N. Lancaster,等. Circadian rhythm of dune‐field activity[J]. Geophysical Research Letters,2021. |
APA | A. Gunn,M. Wanker,N. Lancaster,D. A. Edmonds,R. C. Ewing,&D. J. Jerolmack.(2021).Circadian rhythm of dune‐field activity.Geophysical Research Letters. |
MLA | A. Gunn,et al."Circadian rhythm of dune‐field activity".Geophysical Research Letters (2021). |
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