globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1707633114
论文题名:
Katabatic winds diminish precipitation contribution to the Antarctic ice mass balance
作者: Grazioli J.; Madeleine J.-B.; Gallée H.; Forbes R.M.; Genthon C.; Krinner G.; Berne A.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2017
卷: 114, 期:41
起始页码: 10858
结束页码: 10863
语种: 英语
英文关键词: Antarctica ; Katabatic wind ; Precipitation sublimation
Scopus关键词: ice ; snow ; Antarctica ; Article ; climate ; cloud ; glacial mass balance ; humidity ; katabatic wind ; limit of quantitation ; precipitation ; priority journal ; troposphere ; warming ; wind
英文摘要: Snowfall in Antarctica is a key term of the ice sheet mass budget that influences the sea level at global scale. Over the continental margins, persistent katabatic winds blow all year long and supply the lower troposphere with unsaturated air. We show that this dry air leads to significant low-level sublimation of snowfall. We found using unprecedented data collected over 1 year on the coast of Adélie Land and simulations from different atmospheric models that low-level sublimation accounts for a 17% reduction of total snowfall over the continent and up to 35% on the margins of East Antarctica, significantly affecting satellite-based estimations close to the ground. Our findings suggest that, as climate warming progresses, this process will be enhanced and will limit expected precipitation increases at the ground level. © 2017, National Academy of Sciences. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163789
Appears in Collections:气候变化与战略

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作者单位: Grazioli, J., Environmental Remote Sensing Laboratory, Environmental Engineering Institute, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, CH-1015, Switzerland, Radar Satellite and Nowcasting Division, MeteoSwiss, Locarno-Monti, CH-6605, Switzerland; Madeleine, J.-B., Laboratoire de Météorologie Dynamique/Institut Pierre-Simon Laplace, Sorbonne Universités, Université Pierre et Marie Curie Paris 06, Paris Sciences and Lettres Research University, École Normale Supérieure, Université Paris-Saclay, École Polytechnique, CNRS, Paris, F-75005, France; Gallée, H., Université Grenoble Alpes, CNRS, Institut des Géosciences de l’Environnement, Grenoble, F-38000, France; Forbes, R.M., Research Department, European Centre for Medium-Range Weather Forecasts, Shinfield Park, Reading, RG2 9AX, United Kingdom; Genthon, C., Université Grenoble Alpes, CNRS, Institut des Géosciences de l’Environnement, Grenoble, F-38000, France; Krinner, G., Université Grenoble Alpes, CNRS, Institut des Géosciences de l’Environnement, Grenoble, F-38000, France; Berne, A., Environmental Remote Sensing Laboratory, Environmental Engineering Institute, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, CH-1015, Switzerland

Recommended Citation:
Grazioli J.,Madeleine J.-B.,Gallée H.,et al. Katabatic winds diminish precipitation contribution to the Antarctic ice mass balance[J]. Proceedings of the National Academy of Sciences of the United States of America,2017-01-01,114(41)
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