---
_id: '12609'
abstract:
- lang: eng
  text: Previous estimates of melt and surface sublimation on glaciers of the subtropical
    semiarid Andes (29–34°S) have been obtained at few specific locations, but it
    is not clear how ablation components vary across the entire extent of a glacier
    in this dry environment. Here, we simulate the distributed energy and mass balance
    of Juncal Norte Glacier (33°S) during a 2-month summer period. Forcing fields
    of near-surface air temperature and wind speed are generated using two methods
    accounting for the main physical processes that shape their spatial variations.
    Simulated meteorological variables and ablation agree well with observations on
    the glacier tongue and reveal complex patterns of energy and mass fluxes. Ablation
    decreases from 70 mm w.e. d<jats:sup>−1</jats:sup> at the low-albedo glacier terminus
    (~3000 m), where almost 100% of total ablation corresponds to melt, to &lt;5 mm
    w.e. d<jats:sup>−1</jats:sup> at wind-exposed, strong-radiated sites above 5500
    m, where surface sublimation represents &gt;75% of total ablation. Our simulations
    provide the first glacier-scale estimates of ablation components on a glacier
    in the study region and better reproduce the observed and expected spatial variations
    of melt and surface sublimation, in comparison with more simple assumptions, such
    as linear gradients and uniform wind speeds.
article_processing_charge: No
article_type: original
author:
- first_name: A.
  full_name: AYALA, A.
  last_name: AYALA
- first_name: Francesca
  full_name: Pellicciotti, Francesca
  id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70
  last_name: Pellicciotti
- first_name: N.
  full_name: PELEG, N.
  last_name: PELEG
- first_name: P.
  full_name: BURLANDO, P.
  last_name: BURLANDO
citation:
  ama: 'AYALA A, Pellicciotti F, PELEG N, BURLANDO P. Melt and surface sublimation
    across a glacier in a dry environment: distributed energy-balance modelling of
    Juncal Norte Glacier, Chile. <i>Journal of Glaciology</i>. 2017;63(241):803-822.
    doi:<a href="https://doi.org/10.1017/jog.2017.46">10.1017/jog.2017.46</a>'
  apa: 'AYALA, A., Pellicciotti, F., PELEG, N., &#38; BURLANDO, P. (2017). Melt and
    surface sublimation across a glacier in a dry environment: distributed energy-balance
    modelling of Juncal Norte Glacier, Chile. <i>Journal of Glaciology</i>. Cambridge
    University Press. <a href="https://doi.org/10.1017/jog.2017.46">https://doi.org/10.1017/jog.2017.46</a>'
  chicago: 'AYALA, A., Francesca Pellicciotti, N. PELEG, and P. BURLANDO. “Melt and
    Surface Sublimation across a Glacier in a Dry Environment: Distributed Energy-Balance
    Modelling of Juncal Norte Glacier, Chile.” <i>Journal of Glaciology</i>. Cambridge
    University Press, 2017. <a href="https://doi.org/10.1017/jog.2017.46">https://doi.org/10.1017/jog.2017.46</a>.'
  ieee: 'A. AYALA, F. Pellicciotti, N. PELEG, and P. BURLANDO, “Melt and surface sublimation
    across a glacier in a dry environment: distributed energy-balance modelling of
    Juncal Norte Glacier, Chile,” <i>Journal of Glaciology</i>, vol. 63, no. 241.
    Cambridge University Press, pp. 803–822, 2017.'
  ista: 'AYALA A, Pellicciotti F, PELEG N, BURLANDO P. 2017. Melt and surface sublimation
    across a glacier in a dry environment: distributed energy-balance modelling of
    Juncal Norte Glacier, Chile. Journal of Glaciology. 63(241), 803–822.'
  mla: 'AYALA, A., et al. “Melt and Surface Sublimation across a Glacier in a Dry
    Environment: Distributed Energy-Balance Modelling of Juncal Norte Glacier, Chile.”
    <i>Journal of Glaciology</i>, vol. 63, no. 241, Cambridge University Press, 2017,
    pp. 803–22, doi:<a href="https://doi.org/10.1017/jog.2017.46">10.1017/jog.2017.46</a>.'
  short: A. AYALA, F. Pellicciotti, N. PELEG, P. BURLANDO, Journal of Glaciology 63
    (2017) 803–822.
date_created: 2023-02-20T08:13:53Z
date_published: 2017-10-01T00:00:00Z
date_updated: 2023-02-28T11:28:19Z
day: '01'
doi: 10.1017/jog.2017.46
extern: '1'
intvolume: '        63'
issue: '241'
keyword:
- Earth-Surface Processes
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1017/jog.2017.46
month: '10'
oa: 1
oa_version: Published Version
page: 803-822
publication: Journal of Glaciology
publication_identifier:
  eissn:
  - 1727-5652
  issn:
  - 0022-1430
publication_status: published
publisher: Cambridge University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Melt and surface sublimation across a glacier in a dry environment: distributed
  energy-balance modelling of Juncal Norte Glacier, Chile'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 63
year: '2017'
...