干旱区生态环境知识资源中心(Arid): The spatial extent of hydrological and landscape changes across the mountains and prairies of Canada in the Mackenzie and Nelson River basins based on data from a warm-season time window

Arid

DOI	10.5194/hess-25-2513-2021
	The spatial extent of hydrological and landscape changes across the mountains and prairies of Canada in the Mackenzie and Nelson River basins based on data from a warm-season time window
	Whitfield, Paul H.; Kraaijenbrink, Philip D. A.; Shook, Kevin R.; Pomeroy, John W.
通讯作者	Whitfield, PH (corresponding author), Univ Saskatchewan, Ctr Hydrol, Saskatoon, SK S7N 1K2, Canada. ; Whitfield, PH (corresponding author), Simon Fraser Univ, Dept Earth Sci, Burnaby, BC, Canada. ; Whitfield, PH (corresponding author), Environm & Climate Change Canada, Vancouver, BC, Canada.
来源期刊	HYDROLOGY AND EARTH SYSTEM SCIENCES
ISSN	1027-5606
EISSN	1607-7938
出版年	2021
卷号	25 期号:5 页码:2513-2541
英文摘要	East of the Continental Divide in the cold interior of Western Canada, the Mackenzie and Nelson River basins have some of the world's most extreme and variable climates, and the warming climate is changing the landscape, vegetation, cryosphere, and hydrology. Available data consist of streamflow records from a large number (395) of natural (unmanaged) gauged basins, where flow may be perennial or temporary, collected either year-round or during only the warm season, for a different series of years between 1910 and 2012. An annual warm-season time window where observations were available across all stations was used to classify (1) streamflow regime and (2) seasonal trend patterns. Streamflow trends were compared to changes in satellite Normalized Difference Indices. Clustering using dynamic time warping, which overcomes differences in streamflow timing due to latitude or elevation, identified 12 regime types. Streamflow regime types exhibit a strong connection to location; there is a strong distinction between mountains and plains and associated with ecozones. Clustering of seasonal trends resulted in six trend patterns that also follow a distinct spatial organization. The trend patterns include one with decreasing streamflow, four with different patterns of increasing streamflow, and one without structure. The spatial patterns of trends in mean, minimum, and maximum of Normalized Difference Indices of water and snow (NDWI and NDSI) were similar to each other but different from Normalized Difference Index of vegetation (NDVI) trends. Regime types, trend patterns, and satellite indices trends each showed spatially coherent patterns separating the Canadian Rockies and other mountain ranges in the west from the poorly defined drainage basins in the east and north. Three specific areas of change were identified: (i) in the mountains and cold taiga-covered subarctic, streamflow and greenness were increasing while wetness and snowcover were decreasing, (ii) in the forested Boreal Plains, particularly in the mountainous west, streamflows and greenness were decreasing but wetness and snowcover were not changing, and (iii) in the semi-arid to sub-humid agricultural Prairies, three patterns of increasing streamflow and an increase in the wetness index were observed. The largest changes in streamflow occurred in the eastern Canadian Prairies.
类型	Article
语种	英语
开放获取类型	Green Submitted, gold
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000653654700002
WOS关键词	SELF-ORGANIZING MAPS ; CLIMATE-CHANGE ; GREAT-PLAINS ; BRITISH-COLUMBIA ; WESTERN CANADA ; BOW RIVER ; LAND-USE ; STREAMFLOW ; TRENDS ; VARIABILITY
WOS类目	Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368055
作者单位	[Whitfield, Paul H.; Shook, Kevin R.; Pomeroy, John W.] Univ Saskatchewan, Ctr Hydrol, Saskatoon, SK S7N 1K2, Canada; [Whitfield, Paul H.] Simon Fraser Univ, Dept Earth Sci, Burnaby, BC, Canada; [Whitfield, Paul H.] Environm & Climate Change Canada, Vancouver, BC, Canada; [Kraaijenbrink, Philip D. A.] Univ Utrecht, Geosci, Utrecht, Netherlands
推荐引用方式 GB/T 7714	Whitfield, Paul H.,Kraaijenbrink, Philip D. A.,Shook, Kevin R.,et al. The spatial extent of hydrological and landscape changes across the mountains and prairies of Canada in the Mackenzie and Nelson River basins based on data from a warm-season time window[J],2021,25(5):2513-2541.
APA	Whitfield, Paul H.,Kraaijenbrink, Philip D. A.,Shook, Kevin R.,&Pomeroy, John W..(2021).The spatial extent of hydrological and landscape changes across the mountains and prairies of Canada in the Mackenzie and Nelson River basins based on data from a warm-season time window.HYDROLOGY AND EARTH SYSTEM SCIENCES,25(5),2513-2541.
MLA	Whitfield, Paul H.,et al."The spatial extent of hydrological and landscape changes across the mountains and prairies of Canada in the Mackenzie and Nelson River basins based on data from a warm-season time window".HYDROLOGY AND EARTH SYSTEM SCIENCES 25.5(2021):2513-2541.