Variability in spatial-temporal recharge under the observed and projected climate: A site-specific simulation in the black soil region of Russia

doi:10.1016/j.jhydrol.2020.125247

	Variability in spatial-temporal recharge under the observed and projected climate: A site-specific simulation in the black soil region of Russia
	Pozdniakov, Sergey P.2; Vasilevsky, Peter Yu 2; Grinevskiy, Sergey O.2; Lekhov, Vladimir A.2; Sizov, Nikolay E.2; Wang, Ping 1
刊名	JOURNAL OF HYDROLOGY
	2020-11-01
卷号	590 页码:10
关键词	Recharge Black soil Climate change Historical simulation Projected simulation General Circulation Models
ISSN号	0022-1694
DOI	10.1016/j.jhydrol.2020.125247
通讯作者	Vasilevsky, Peter Yu(valenciacf@mail.ru)
英文摘要	The main purpose of this work is to evaluate diffuse groundwater recharge and its temporal dynamics at sites with different landscapes and soil profiles under observed and projected climate variability. Three typical sites with different landscapes and topsoil profiles were chosen for the field study. Field work consisted of pit development and soil sample collection for laboratory study using the centrifuge method. Soil hydraulic parameters were obtained by the RETC code using the observed values of volumetric water content vs. pressure head. HYDRUS-1D code was used to estimate groundwater recharge based on a 70-year (1945-2015) meteorological dataset with daily resolution (including values of precipitation, air temperature, wind speed, and humidity). This dataset was preprocessed using our SURFBAL code to calculate the surface and topsoil water and energy balance. Retrospective historical simulation results showed that there was a considerable variation in the mean annual groundwater recharge values (49-104 mm/year) for the three studied profiles. The temporal change in groundwater recharge occurred relatively synchronously at all sites and was governed by the change in the current annual aridity index. The results of this historical simulation did not reveal any traces of climate change in the groundwater recharge of the studied region in the last 30-40 years. To predict the recharge variations in the second half of the 21st century, the LARSWG forecast weather generator with the climate projections of the 5th General Circulation Models (GCMs) from the Coupled Model Intercomparison Project 5 (CMIP5) family was used. On average in the case of climate development under the maximum greenhouse gas emissions RCP8.5 scenario, there will be a reduction in groundwater recharge in the studied region in 2060-2080, caused by two factors: change of aridity index, which determines evapotranspiration during a warm season and the accumulation of snow and subsequent meltwater infiltration during the snowmelt periods.
资助项目	Russian Science Foundation[16-17-10187] ; Special Exchange Program of the Chinese Academy of Sciences[2019-2020]
WOS关键词	GROUNDWATER RECHARGE ; HYDRAULIC CONDUCTIVITY ; MODEL ; EVAPOTRANSPIRATION ; DISCHARGE
WOS研究方向	Engineering ; Geology ; Water Resources
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000599754500048
资助机构	Russian Science Foundation ; Special Exchange Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/137761]
专题	中国科学院地理科学与资源研究所
通讯作者	Vasilevsky, Peter Yu
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, 11A Datun Rd, Beijing 100101, Peoples R China 2.Lomonosov Moscow State Univ, Dept Hydrogeol, GSP 1, Moscow 119899, Russia
推荐引用方式 GB/T 7714	Pozdniakov, Sergey P.,Vasilevsky, Peter Yu,Grinevskiy, Sergey O.,et al. Variability in spatial-temporal recharge under the observed and projected climate: A site-specific simulation in the black soil region of Russia[J]. JOURNAL OF HYDROLOGY,2020,590:10.
APA	Pozdniakov, Sergey P.,Vasilevsky, Peter Yu,Grinevskiy, Sergey O.,Lekhov, Vladimir A.,Sizov, Nikolay E.,&Wang, Ping.(2020).Variability in spatial-temporal recharge under the observed and projected climate: A site-specific simulation in the black soil region of Russia.JOURNAL OF HYDROLOGY,590,10.
MLA	Pozdniakov, Sergey P.,et al."Variability in spatial-temporal recharge under the observed and projected climate: A site-specific simulation in the black soil region of Russia".JOURNAL OF HYDROLOGY 590(2020):10.