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Sökning: onr:"swepub:oai:gup.ub.gu.se/328735" > Characterizing prec...

  • Jiang, H. R. (författare)

Characterizing precipitation uncertainties in a high-altitudinal permafrost watershed of the Tibetan plateau based on regional water balance and hydrological model simulations

  • Artikel/kapitelEngelska2023

Förlag, utgivningsår, omfång ...

  • 2023

Nummerbeteckningar

  • LIBRIS-ID:oai:gup.ub.gu.se/328735
  • https://gup.ub.gu.se/publication/328735URI
  • https://doi.org/10.1016/j.ejrh.2023.101445DOI

Kompletterande språkuppgifter

  • Språk:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • Study region: the source region of the Yangtze River (SRYR) Study focus: Precipitation uncertainties significantly impact water resource management, while the uncertainties of various precipitation products are not fully investigated due to the lack of observations, especially in high-altitudinal permafrost areas. In this study, we selected nine products representing three types of precipitation, including gauge-based, satellite-based and merged products, and conducted a comprehensive evaluation using regional water balance method and hydrological model simulations. New hydrological insights for the region: Our results indicate most precipitation products can replicate the observed precipitation decreasing trend with increasing elevation below 4500 m, but trends vary at higher elevations. The gauge-based precipitation products with bias correction outperform others, while most satellite-based products underestimate precipitation. The water -balance based evaluation shows a merged product (TPHiPr), and two gauge-based products perform best, followed by a satellite-based product (MSWEP). Process-based model simulations driven by selected precipitation products can reproduce daily runoff processes well in the entire SRYR (NSE = 0.68-0.86), but the performance degraded in the high-altitudinal Tuotuohe sub -basin (NSE = 0.08-0.76). The runoff coefficients comparisons in these two regions also indicate the possible deficiencies of precipitation products in the high-altitudinal regions. Our results highlight the challenges of current precipitation products in characterizing the spatial and tem-poral precipitation changes in the high-altitudinal permafrost regions, and call for more accurate products in these areas.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Yi, Y. H. (författare)
  • Xu, J. J. (författare)
  • Chen, Deliang,1961Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences(Swepub:gu)xchede (författare)
  • Lu, F. (författare)
  • Li, R. X. (författare)
  • Wang, X. J. (författare)
  • Zhou, B. R. (författare)
  • Göteborgs universitetInstitutionen för geovetenskaper (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Journal of Hydrology Regional Studies472214-5818

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