Globally elevated chemical weathering rates beneath glaciers
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 contemp...
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ftchinacadscimhe:oai:ir.imde.ac.cn:131551/56403 2023-05-15T16:21:30+02:00 Globally elevated chemical weathering rates beneath glaciers Li, Xiangying Wang, Ninglian Ding, Yongjian Hawkings, Jon R. Yde, Jacob C. Raiswell, Robert Liu, Jintao Zhang, Shiqiang Kang, Shichang Wang, Rongjun Liu, Qiao Liu, Shiyin Bol, Roland You, Xiaoni Li, Guoyu 2022-01-20 http://ir.imde.ac.cn/handle/131551/56403 https://doi.org/10.1038/s41467-022-28032-1 英语 eng NATURE PORTFOLIO NATURE COMMUNICATIONS http://ir.imde.ac.cn/handle/131551/56403 doi:10.1038/s41467-022-28032-1 GREENLAND ICE-SHEET MAJOR-ION CHEMISTRY SUSPENDED SEDIMENT CO2 CONSUMPTION SEASONAL-VARIATION MOUNTAIN GLACIERS SOLUTE PROVENANCE GANGOTRI GLACIER DENUDATION RATES TRACE-ELEMENTS Science & Technology - Other Topics Multidisciplinary Sciences 期刊论文 2022 ftchinacadscimhe https://doi.org/10.1038/s41467-022-28032-1 2022-12-19T18:29:37Z 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 Sigma*meq(+) m(-2) year(-1)) are similar to 3 times higher than two decades ago, up to 10 times higher than ice sheet catchments (similar to 150-2000 Sigma*meq(+) m(-2) year(-1)), up to 50 times higher than whole ice sheet means (similar to 30-45 Sigma*meq(+) m(-2) year(-1)) and similar to 4 times higher than major non-glacial riverine means (similar to 500 Sigma*meq(+) 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. Report glacier Greenland Ice Sheet IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) Greenland Nature Communications 13 1 |
institution |
Open Polar |
collection |
IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) |
op_collection_id |
ftchinacadscimhe |
language |
English |
topic |
GREENLAND ICE-SHEET MAJOR-ION CHEMISTRY SUSPENDED SEDIMENT CO2 CONSUMPTION SEASONAL-VARIATION MOUNTAIN GLACIERS SOLUTE PROVENANCE GANGOTRI GLACIER DENUDATION RATES TRACE-ELEMENTS Science & Technology - Other Topics Multidisciplinary Sciences |
spellingShingle |
GREENLAND ICE-SHEET MAJOR-ION CHEMISTRY SUSPENDED SEDIMENT CO2 CONSUMPTION SEASONAL-VARIATION MOUNTAIN GLACIERS SOLUTE PROVENANCE GANGOTRI GLACIER DENUDATION RATES TRACE-ELEMENTS Science & Technology - Other Topics Multidisciplinary Sciences Li, Xiangying Wang, Ninglian Ding, Yongjian Hawkings, Jon R. Yde, Jacob C. Raiswell, Robert Liu, Jintao Zhang, Shiqiang Kang, Shichang Wang, Rongjun Liu, Qiao Liu, Shiyin Bol, Roland You, Xiaoni Li, Guoyu Globally elevated chemical weathering rates beneath glaciers |
topic_facet |
GREENLAND ICE-SHEET MAJOR-ION CHEMISTRY SUSPENDED SEDIMENT CO2 CONSUMPTION SEASONAL-VARIATION MOUNTAIN GLACIERS SOLUTE PROVENANCE GANGOTRI GLACIER DENUDATION RATES TRACE-ELEMENTS Science & Technology - Other Topics Multidisciplinary Sciences |
description |
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 Sigma*meq(+) m(-2) year(-1)) are similar to 3 times higher than two decades ago, up to 10 times higher than ice sheet catchments (similar to 150-2000 Sigma*meq(+) m(-2) year(-1)), up to 50 times higher than whole ice sheet means (similar to 30-45 Sigma*meq(+) m(-2) year(-1)) and similar to 4 times higher than major non-glacial riverine means (similar to 500 Sigma*meq(+) 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. |
format |
Report |
author |
Li, Xiangying Wang, Ninglian Ding, Yongjian Hawkings, Jon R. Yde, Jacob C. Raiswell, Robert Liu, Jintao Zhang, Shiqiang Kang, Shichang Wang, Rongjun Liu, Qiao Liu, Shiyin Bol, Roland You, Xiaoni Li, Guoyu |
author_facet |
Li, Xiangying Wang, Ninglian Ding, Yongjian Hawkings, Jon R. Yde, Jacob C. Raiswell, Robert Liu, Jintao Zhang, Shiqiang Kang, Shichang Wang, Rongjun Liu, Qiao Liu, Shiyin Bol, Roland You, Xiaoni Li, Guoyu |
author_sort |
Li, Xiangying |
title |
Globally elevated chemical weathering rates beneath glaciers |
title_short |
Globally elevated chemical weathering rates beneath glaciers |
title_full |
Globally elevated chemical weathering rates beneath glaciers |
title_fullStr |
Globally elevated chemical weathering rates beneath glaciers |
title_full_unstemmed |
Globally elevated chemical weathering rates beneath glaciers |
title_sort |
globally elevated chemical weathering rates beneath glaciers |
publisher |
NATURE PORTFOLIO |
publishDate |
2022 |
url |
http://ir.imde.ac.cn/handle/131551/56403 https://doi.org/10.1038/s41467-022-28032-1 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland Ice Sheet |
genre_facet |
glacier Greenland Ice Sheet |
op_relation |
NATURE COMMUNICATIONS http://ir.imde.ac.cn/handle/131551/56403 doi:10.1038/s41467-022-28032-1 |
op_doi |
https://doi.org/10.1038/s41467-022-28032-1 |
container_title |
Nature Communications |
container_volume |
13 |
container_issue |
1 |
_version_ |
1766009503505973248 |