SwePub
Sök i LIBRIS databas

  Extended search

id:"swepub:oai:gup.ub.gu.se/307331"
 

Search: id:"swepub:oai:gup.ub.gu.se/307331" > Summer afternoon pr...

  • 1 of 1
  • Previous record
  • Next record
  •    To hitlist
  • Lin, Changgui,1985Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences (author)

Summer afternoon precipitation associated with wind convergence near the Himalayan glacier fronts

  • Article/chapterEnglish2021

Publisher, publication year, extent ...

  • Elsevier BV,2021

Numbers

  • LIBRIS-ID:oai:gup.ub.gu.se/307331
  • https://gup.ub.gu.se/publication/307331URI
  • https://doi.org/10.1016/j.atmosres.2021.105658DOI

Supplementary language notes

  • Language:English

Part of subdatabase

Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Little is known about the effects of glacier-air interactions on the Himalayan glacier mass balance. Until this knowledge gap is filled, a reliable projection of the future changes in the Himalayan glaciers is hardly possible. Here, we describe the drying effect of the katabatic winds on the up-valley summer monsoon flows by creating favorable conditions for local convergence-induced precipitation to occur near the glacier fronts. We postulate that this retarding effect on the up-valley monsoon flows results in a negative feedback mechanism mediated by glacier-air interactions, in which glacial retreat pushes precipitation upwards as the down-valley katabatic winds weaken, resulting in greater local precipitation and enhanced snow accumulation across the upper parts of the Himalayan glaciers. Our analyses are based on the exclusive data recorded in the Khumbu valley and the Langtang valley in the Nepalese Himalayas. These data revealed higher afternoon precipitation in summer associated with surface wind convergence near the glacier fronts and a sharp decrease in the temperature lapse rate over the glacier surfaces. The principle of the observed phenomena was proven by our high-resolution modeling sensitive experiment, which involved two simulations, one with the present glaciers and the other without. This numerical experiment also supports the proposed negative feedback. Furthermore, we report a low deuterium excess near the glacier fronts, indicating below-cloud re-evaporation facilitated by the local convergence induced by the dry katabatic winds. Our study suggests that current models may overestimate the retreat of Himalayan glaciers because they have completely ignored the glacier-air interactions. © 2021 The Author(s)

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Yang, K. (author)
  • Chen, Deliang,1961Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences(Swepub:gu)xchede (author)
  • Guyennon, N. (author)
  • Balestrini, R. (author)
  • Yang, X. (author)
  • Acharya, S. (author)
  • Ou, TinghaiGothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences(Swepub:gu)xoutic (author)
  • Yao, T. (author)
  • Tartari, G. (author)
  • Salerno, F. (author)
  • Göteborgs universitetInstitutionen för geovetenskaper (creator_code:org_t)

Related titles

  • In:Atmospheric Research: Elsevier BV2590169-8095

Internet link

Find in a library

To the university's database

  • 1 of 1
  • Previous record
  • Next record
  •    To hitlist

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Close

Copy and save the link in order to return to this view