气候变化领域集成服务门户(CCPortal): Globally elevated chemical weathering rates beneath glaciers

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DOI	10.1038/s41467-022-28032-1
	Globally elevated chemical weathering rates beneath glaciers
	Li X.; Wang N.; Ding Y.; Hawkings J.R.; Yde J.C.; Raiswell R.; Liu J.; Zhang S.; Kang S.; Wang R.; Liu Q.; Liu S.; Bol R.; You X.; Li G.
发表日期	2022
ISSN	2041-1723
卷号	13 期号:1
英文摘要	Physical erosion and chemical weathering rates beneath glaciers are expected to increase in a warming climate with enhanced melting but are poorly constrained. We present a global dataset of cations in meltwaters of 77 glaciers, including new data from 19 Asian glaciers. Our study shows that contemporary cation denudation rates (CDRs) beneath glaciers (2174 ± 977 Σmeq+ m−2 year−1) are ~3 times higher than two decades ago, up to 10 times higher than ice sheet catchments (~150-2000 Σmeq+ m−2 year−1), up to 50 times higher than whole ice sheet means (~30-45 Σmeq+ m−2 year−1) and ~4 times higher than major non-glacial riverine means (~500 Σmeq+ m−2 year−1). Glacial CDRs are positively correlated with air temperature, suggesting glacial chemical weathering yields are likely to increase in future. Our findings highlight that chemical weathering beneath glaciers is more intense than many other terrestrial systems and may become increasingly important for regional biogeochemical cycles. © 2022, The Author(s).
语种	英语
scopus关键词	chemical weathering; data set; denudation; erosion feature; erosion rate; glacial erosion; global warming; ice sheet; melting
来源期刊	Nature Communications
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/250528
作者单位	Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, Northwest University, Xi’an, China; College of Urban and Environmental Sciences, Northwest University, Xi’an, China; State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing, China; State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China; University of Chinese Academy of Sciences, Beijing, China; China-Pakistan Joint Research Center on Earth Sciences, CAS-HEC, Islamabad, Pakistan; Department of Earth and Environmental Science, University of Pennsylvania, Philadelphia, PA, United States; Department of Environmental Sciences, Western Norway University of Applied Sciences, Sogndal, Norway; Cohen Biogeochemistry Laboratory, School of Earth and Environment, University of Leeds, Leeds, ...
推荐引用方式 GB/T 7714	Li X.,Wang N.,Ding Y.,et al. Globally elevated chemical weathering rates beneath glaciers[J]. 中国科学院西北生态环境资源研究院,2022,13(1).
APA	Li X..,Wang N..,Ding Y..,Hawkings J.R..,Yde J.C..,...&Li G..(2022).Globally elevated chemical weathering rates beneath glaciers.Nature Communications,13(1).
MLA	Li X.,et al."Globally elevated chemical weathering rates beneath glaciers".Nature Communications 13.1(2022).