气候变化领域集成服务门户(CCPortal): Katabatic winds diminish precipitation contribution to the Antarctic ice mass balance

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DOI	10.1073/pnas.1707633114
	Katabatic winds diminish precipitation contribution to the Antarctic ice mass balance
	Grazioli J.; Madeleine J.-B.; Gallée H.; Forbes R.M.; Genthon C.; Krinner G.; Berne A.
发表日期	2017
ISSN	0027-8424
起始页码	10858
结束页码	10863
卷号	114 期号:41
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.
英文关键词	Antarctica; Katabatic wind; Precipitation sublimation
语种	英语
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
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158889
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 Greno...
推荐引用方式 GB/T 7714	Grazioli J.,Madeleine J.-B.,Gallée H.,et al. Katabatic winds diminish precipitation contribution to the Antarctic ice mass balance[J],2017,114(41).
APA	Grazioli J..,Madeleine J.-B..,Gallée H..,Forbes R.M..,Genthon C..,...&Berne A..(2017).Katabatic winds diminish precipitation contribution to the Antarctic ice mass balance.Proceedings of the National Academy of Sciences of the United States of America,114(41).
MLA	Grazioli J.,et al."Katabatic winds diminish precipitation contribution to the Antarctic ice mass balance".Proceedings of the National Academy of Sciences of the United States of America 114.41(2017).