Journal cover Journal topic
The Cryosphere An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 4.790 IF 4.790
  • IF 5-year value: 5.921 IF 5-year
    5.921
  • CiteScore value: 5.27 CiteScore
    5.27
  • SNIP value: 1.551 SNIP 1.551
  • IPP value: 5.08 IPP 5.08
  • SJR value: 3.016 SJR 3.016
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 63 Scimago H
    index 63
  • h5-index value: 51 h5-index 51
Discussion papers
https://doi.org/10.5194/tc-2016-32
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/tc-2016-32
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Submitted as: research article 11 Apr 2016

Submitted as: research article | 11 Apr 2016

Review status
This discussion paper is a preprint. It has been under review for the journal The Cryosphere (TC). A final paper in TC is not foreseen.

Impacts of black carbon and mineral dust on radiative forcing and glacier melting during summer in the Qilian Mountains, northeastern Tibetan Plateau

Yang Li1,5, Jizu Chen2,5, Shichang Kang2,3, Chaoliu Li1, Bin Qu4, Lekhendra Tripathee1,5, Fangping Yan2,5, Yulan Zhang2, Junmin Guo1,5, Chaman Gul2,5, and Xiang Qin2 Yang Li et al.
  • 1Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China
  • 2State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, 730000, China
  • 3CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing 100085, China
  • 4Laboratory of Green Chemistry, Lappeenranta University of Technology, Mikkeli 50130, Finland
  • 5University of Chinese Academy of Sciences, Beijing 100049, China

Abstract. Black carbon (BC) and mineral dust (MD), the most important compositions of light absorbing particles (LAPs), significantly reduce the albedo of glaciers and thus accelerate their melting. In order to investigate the impacts of BC and MD on the glacier radiation balance and ablation, a total of 92 surface snow/ice samples were collected along different elevations from 4300–4950 m a.s.l. on Laohugou glacier No. 12 (LHG, 39°10'–35' N, 96°10'–35' E), located at Qilian Mountains, northeastern margin of the Tibetan Plateau (TP), during summer of 2013 and 2014. A thermal-optical method was employed to detect the BC (EC – element carbon) concentrations in snow/ice samples. The results showed that BC and MD concentrations were much lower in snow than those in ice, and gradually declined with increasing elevation. The effects of BC and MD on albedo reduction at different melting conditions were identified with the SNow ICe Aerosol Radiative (SNICAR) model initiated by in-situ observation data. The sensitivity analysis showed that BC had a stronger impact on albedo reduction than MD on this glacier. The impacts of BC represented around 45 % of albedo reduction while the contribution of MD was 35 % when the glacier surface presented as superimposed ice and experienced intensive melting. During summer, when the surface was covered by snow, BC and MD contributed for 15 % and 9 % respectively. On average, the radiative forcing (RF) caused by BC in the snow/ice, more than MD, was 41.6 ± 37.0 W m−2. Meanwhile, compared to glacier melting in summer of 2013 and 2014 (409 mm w.e. and 366 mm w.e., respectively) calculated using the surface energy-mass balance model, contributions of BC and MD were less than 37 % and 32 % respectively of summer melting, while MD and BC together contributed a maximum of 61 %. This study provided the baseline information on BC and MD concentrations in glaciers of the northeastern TP and their contributions in glacier melting during summer.

Yang Li et al.
Interactive discussion
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
Interactive discussion
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
Yang Li et al.
Viewed  
Total article views: 942 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
619 287 36 942 96 17 57
  • HTML: 619
  • PDF: 287
  • XML: 36
  • Total: 942
  • Supplement: 96
  • BibTeX: 17
  • EndNote: 57
Views and downloads (calculated since 11 Apr 2016)
Cumulative views and downloads (calculated since 11 Apr 2016)
Cited  
Saved  
Discussed  
No discussed metrics found.
Latest update: 17 Sep 2019
Publications Copernicus
Download
Short summary
To our knowledge, this study constitutes the first quantitative dataset of the impacts of light absorbing particles (LAPs) on glacier ablation estimated directly from the northeastern edge of the Tibetan Plateau (TP).The average concentrations of black carbon (BC) and mineral dust (MD) in surface snow and ice at Laohugou Glacier No. 12 (LHG) were much higher than those detected in snow pits and ice cores in TP and Tien Shan mountains.
To our knowledge, this study constitutes the first quantitative dataset of the impacts of light...
Citation