气候变化领域集成服务门户(CCPortal): Bias corrections of precipitation measurements across experimental sites in different ecoclimatic regions of western Canada

CCPortal

DOI	10.5194/tc-10-2347-2016
	Bias corrections of precipitation measurements across experimental sites in different ecoclimatic regions of western Canada
	Pan X.; Yang D.; Li Y.; Barr A.; Helgason W.; Hayashi M.; Marsh P.; Pomeroy J.; Janowicz R.J.
发表日期	2016
ISSN	19940416
卷号	10 期号:5
英文摘要	This study assesses a filtering procedure on accumulating precipitation gauge measurements and quantifies the effects of bias corrections for wind-induced undercatch across four ecoclimatic regions in western Canada, including the permafrost regions of the subarctic, the Western Cordillera, the boreal forest, and the prairies. The bias corrections increased monthly precipitation by up to 163 % at windy sites with short vegetation and sometimes modified the seasonal precipitation regime, whereas the increases were less than 13 % at sites shielded by forest. On a yearly basis, the increase of total precipitation ranged from 8 to 20 mm (3-4 %) at sites shielded by vegetation and 60 to 384 mm (about 15-34 %) at open sites. In addition, the bias corrections altered the seasonal precipitation patterns at some windy sites with high snow percentage (> 50 %). This study highlights the need for and importance of precipitation bias corrections at both research sites and operational networks for water balance assessment and the validation of global/regional climate-hydrology models. © 2016 Author(s).
学科领域	boreal forest; climate conditions; climate modeling; experimental study; model validation; permafrost; prairie; precipitation assessment; raingauge; sampling bias; seasonal variation; subarctic region; water budget; Canada; North American Cordillera
语种	英语
scopus关键词	boreal forest; climate conditions; climate modeling; experimental study; model validation; permafrost; prairie; precipitation assessment; raingauge; sampling bias; seasonal variation; subarctic region; water budget; Canada; North American Cordillera
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119570
作者单位	Global Institute for Water Security, University of Saskatchewan, 11 Innovation Boulevard, Saskatoon, SK, Canada; National Hydrology Research Centre, Environment Canada, 11 Innovation Boulevard, Saskatoon, SK, Canada; Department of Geoscience, University of Calgary, Calgary, AB, Canada; Cold Regions Research Centre, Wilfrid Laurier University, Waterloo, ON, Canada; Centre for Hydrology, University of Saskatchewan, 117 Science Place, Saskatoon, SK, Canada; Water Resources Branch, Yukon Department of Environment, Whitehorse, YT, Canada
推荐引用方式 GB/T 7714	Pan X.,Yang D.,Li Y.,et al. Bias corrections of precipitation measurements across experimental sites in different ecoclimatic regions of western Canada[J],2016,10(5).
APA	Pan X..,Yang D..,Li Y..,Barr A..,Helgason W..,...&Janowicz R.J..(2016).Bias corrections of precipitation measurements across experimental sites in different ecoclimatic regions of western Canada.Cryosphere,10(5).
MLA	Pan X.,et al."Bias corrections of precipitation measurements across experimental sites in different ecoclimatic regions of western Canada".Cryosphere 10.5(2016).