Journal cover Journal topic
Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/hess-2017-744
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
22 Feb 2018
Review status
This discussion paper is a preprint. It has been under review for the journal Hydrology and Earth System Sciences (HESS). The manuscript was not accepted for further review after discussion.
Climate-induced hydrologic change in the source region of the Yellow River: a new assessment including varying permafrost
Pan Wu, Sihai Liang, Xu-Sheng Wang, Yuqing Feng, and Jeffrey M. McKenzie School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, P. R. China
Abstract. The source region of the Yellow River (SRYR) provides 35 % of the rivers annual discharge but is very sensitive to the climate change. The change in discharge from the SRYR has been attributed to both climatic and anthropogenic forces, and previous estimates of the impact of human activities on the change in discharge have been higher than 50 % of the total change. Considering the very low population density and limited land use change, this result is potentially inconsistent. Our study modifies the traditional Budyko separating approach to identify and quantify the climatic causes in discharge changes. Application of this new approach to the SRYR now highlights the role of the degrading permafrost, based on long-term observation data of the maximum frozen depth (MFD). Our results show that over the past half-century, the change in discharge in the SRYR was primarily controlled by climate change rather than local human activities. Increasing air temperature is generally a negative force on discharge whereas it also causes permafrost to degrade – a positive factor on discharge generation. Such conflicting effects enhance the uncertainty in assessments of the hydrological response to climate change in the SRYR.
Citation: Wu, P., Liang, S., Wang, X.-S., Feng, Y., and McKenzie, J. M.: Climate-induced hydrologic change in the source region of the Yellow River: a new assessment including varying permafrost, Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2017-744, 2018.
Pan Wu et al.

Viewed

Total article views: 535 (including HTML, PDF, and XML)

HTML PDF XML Total Supplement BibTeX EndNote
430 96 9 535 20 8 10

Views and downloads (calculated since 22 Feb 2018)

Cumulative views and downloads (calculated since 22 Feb 2018)

Viewed (geographical distribution)

Total article views: 535 (including HTML, PDF, and XML)

Thereof 528 with geography defined and 7 with unknown origin.

Country # Views %
  • 1

Saved

Discussed

Latest update: 17 Jun 2018
Publications Copernicus
Download
Short summary
This study provides a new assessment of climate change impacts on discharge change in the source region of the Yellow River in considering vary perrmafrost.
This study provides a new assessment of climate change impacts on discharge change in the source...
Share