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The impact of land surface temperatures on suprapermafrost groundwater on the central Qinghai-Tibet Plateau
Huang Kewei1,2; Dai Junchen1,2; Wang Genxu1; Chang Juan3; Lu Yaqiong1; Song Chunlin1,2; Hu Zhaoyong1; Ahmed Naveed1; Ye Renzheng3
Source PublicationHydrological Processes
SubtypeArticle; Early Access
Contribution Rank1
AbstractTo investigate the influences of land surface temperatures (LSTs) on suprapermafrost groundwater discharge, a river valley was selected in a typical permafrost region of Fenghuoshan (FHS) watershed on the central Qinghai-Tibet Plateau. We developed a two-dimensional model to simulate the suprapermafrost groundwater seasonal dynamics controlled by LSTs and the changing trends under a warming climate scenario (3°C/100 year). We calibrated key parameters of our model by the field observations at FHS watershed and analysed the relationship between the different LSTs and the suprapermafrost groundwater discharge dynamics in the active layer. The results show that (a) by changing the permeability of the active layer, the LSTs have a significant effect on the suprapermafrost groundwater discharge. A higher LST causes more suprapermafrost groundwater discharge, resulting in a different discharge pattern and affecting the ability to replenish the nearby river in the permafrost area. (b) Under a warming climate, the most obvious change in the suprapermafrost groundwater occurs in the freeze initiation period (from October to December), and there is a significant increase in the suprapermafrost groundwater discharge rate. This study reveals that the LST has a controlling effect on the seasonal dynamics of shallow groundwater systems in permafrost regions, indicating that the impact of local topography on the suprapermafrost groundwater should not be ignored in suprapermafrost groundwater simulations. Moreover, the warming simulation results demonstrate that the freezing season is the significant transformation period of suprapermafrost groundwater dynamics under future climate change, which can be used to better understand hydrological and ecological process changes in permafrost regions under climate warming. © 2019 John Wiley & Sons Ltd
KeywordAtmospheric temperature Climate change Climate models Discharge (fluid mechanics) Dynamics Groundwater Permafrost Surface measurement Surface properties Topography Watersheds
Indexed BySCI ; EI
Funding ProjectNational Natural Science Foundation of China[91547203] ; National Natural Science Foundation of China[41671015]
WOS Research AreaWater Resources
WOS SubjectWater Resources
WOS IDWOS:000504201400001
Funding OrganizationNational Natural Science Foundation of China
EI Accession NumberAccession number:20200107963748
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorWang Genxu
Affiliation1.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China;
2.University of Chinese Academy of Sciences, Beijing, China;
3.College of Earth and Environment Science, Lanzhou University, Lanzhou, China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Huang Kewei,Dai Junchen,Wang Genxu,et al. The impact of land surface temperatures on suprapermafrost groundwater on the central Qinghai-Tibet Plateau[J]. Hydrological Processes,2019,34(6):1475-1488.
APA Huang Kewei.,Dai Junchen.,Wang Genxu.,Chang Juan.,Lu Yaqiong.,...&Ye Renzheng.(2019).The impact of land surface temperatures on suprapermafrost groundwater on the central Qinghai-Tibet Plateau.Hydrological Processes,34(6),1475-1488.
MLA Huang Kewei,et al."The impact of land surface temperatures on suprapermafrost groundwater on the central Qinghai-Tibet Plateau".Hydrological Processes 34.6(2019):1475-1488.
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