气候变化领域集成服务门户(CCPortal): Emerging dominance of summer rainfall driving High Arctic terrestrial-aquatic connectivity

CCPortal

DOI	10.1038/s41467-021-21759-3
	Emerging dominance of summer rainfall driving High Arctic terrestrial-aquatic connectivity
	Beel C.R.; Heslop J.K.; Orwin J.F.; Pope M.A.; Schevers A.J.; Hung J.K.Y.; Lafrenière M.J.; Lamoureux S.F.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Hydrological transformations induced by climate warming are causing Arctic annual fluvial energy to shift from skewed (snowmelt-dominated) to multimodal (snowmelt- and rainfall-dominated) distributions. We integrated decade-long hydrometeorological and biogeochemical data from the High Arctic to show that shifts in the timing and magnitude of annual discharge patterns and stream power budgets are causing Arctic material transfer regimes to undergo fundamental changes. Increased late summer rainfall enhanced terrestrial-aquatic connectivity for dissolved and particulate material fluxes. Permafrost disturbances (<3% of the watersheds’ areal extent) reduced watershed-scale dissolved organic carbon export, offsetting concurrent increased export in undisturbed watersheds. To overcome the watersheds’ buffering capacity for transferring particulate material (30 ± 9 Watt), rainfall events had to increase by an order of magnitude, indicating the landscape is primed for accelerated geomorphological change when future rainfall magnitudes and consequent pluvial responses exceed the current buffering capacity of the terrestrial-aquatic continuum. © 2021, Crown.
语种	英语
scopus关键词	organic carbon; rain; aquatic environment; connectivity; dissolved organic carbon; hydrometeorology; rainfall; terrestrial deposit; terrestrial environment; watershed; air temperature; Arctic; Article; catchment area (hydrology); channel gating; climate warming; controlled study; permafrost; runoff; sediment; summer; temperature; watershed; Arctic
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250754
作者单位	Department of Geography and Planning, Queen’s University, Kingston, ON, Canada; Water Management and Monitoring, Environment and Natural Resources, Government of Northwest Territories, Yellowknife, NT, Canada; Section 3.7 Geomicrobiology, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany; Resource Stewardship Division, Alberta Environment and Parks, Government of Alberta, Calgary, AB, Canada
推荐引用方式 GB/T 7714	Beel C.R.,Heslop J.K.,Orwin J.F.,et al. Emerging dominance of summer rainfall driving High Arctic terrestrial-aquatic connectivity[J],2021,12(1).
APA	Beel C.R..,Heslop J.K..,Orwin J.F..,Pope M.A..,Schevers A.J..,...&Lamoureux S.F..(2021).Emerging dominance of summer rainfall driving High Arctic terrestrial-aquatic connectivity.Nature Communications,12(1).
MLA	Beel C.R.,et al."Emerging dominance of summer rainfall driving High Arctic terrestrial-aquatic connectivity".Nature Communications 12.1(2021).