---
_id: '12656'
abstract:
- lang: eng
  text: We use meteorological data from two automatic weather stations (AWS) on Juncal
    Norte Glacier, central Chile, to investigate the glacier–climate interaction and
    to test ablation models of different complexity. The semi-arid Central Andes are
    characterized by dry summers, with precipitation close to zero, low relative humidity
    and intense solar radiation. We show that katabatic forcing is dominant both on
    the glacier tongue and in the fore field, and that low humidity and absence of
    clouds cause strong radiative cooling of the glacier surface. Surface albedo is
    basically constant for snow and ice, because of the scarcity of solid precipitation.
    The energy balance of the glacier is simulated for a 2-month period in austral
    summer using two models of different complexity, which differ in the inclusion
    of the heat conduction flux into the snowpack and in the parameterization of the
    incoming longwave radiation. Net shortwave radiation is the dominant component
    of the energy balance. The sensible heat flux is always positive, while both the
    net longwave radiation and latent heat flux are negative. Neglecting the subsurface
    heat flux and corresponding variations in surface temperature leads to an overestimation
    of ablation of 2% over a total of 3695 mm water equivalent (w.e.) at the end of
    the season. Correct modelling of incoming longwave radiation is crucial, and we
    suggest that parameterizations based on vapour pressure and air temperature should
    be used rather than on computed cloud amount. We also used an enhanced temperature-index
    model incorporating the shortwave radiation flux, which has two empirical parameters.
    We apply it both with values of parameters obtained for Alpine glaciers and recalibrated
    on Juncal Norte. The model recalibrated against the correct energy balance simulations
    performs very well. The model parameters respond to the meteorological conditions
    typical of this climatic setting.
article_processing_charge: No
article_type: original
author:
- first_name: Francesca
  full_name: Pellicciotti, Francesca
  id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70
  last_name: Pellicciotti
  orcid: 0000-0002-5554-8087
- first_name: Jakob
  full_name: Helbing, Jakob
  last_name: Helbing
- first_name: Andrés
  full_name: Rivera, Andrés
  last_name: Rivera
- first_name: Vincent
  full_name: Favier, Vincent
  last_name: Favier
- first_name: Javier
  full_name: Corripio, Javier
  last_name: Corripio
- first_name: José
  full_name: Araos, José
  last_name: Araos
- first_name: Jean-Emmanuel
  full_name: Sicart, Jean-Emmanuel
  last_name: Sicart
- first_name: Marco
  full_name: Carenzo, Marco
  last_name: Carenzo
citation:
  ama: Pellicciotti F, Helbing J, Rivera A, et al. A study of the energy balance and
    melt regime on Juncal Norte Glacier, semi-arid Andes of central Chile, using melt
    models of different complexity. <i>Hydrological Processes</i>. 2008;22(19):3980-3997.
    doi:<a href="https://doi.org/10.1002/hyp.7085">10.1002/hyp.7085</a>
  apa: Pellicciotti, F., Helbing, J., Rivera, A., Favier, V., Corripio, J., Araos,
    J., … Carenzo, M. (2008). A study of the energy balance and melt regime on Juncal
    Norte Glacier, semi-arid Andes of central Chile, using melt models of different
    complexity. <i>Hydrological Processes</i>. Wiley. <a href="https://doi.org/10.1002/hyp.7085">https://doi.org/10.1002/hyp.7085</a>
  chicago: Pellicciotti, Francesca, Jakob Helbing, Andrés Rivera, Vincent Favier,
    Javier Corripio, José Araos, Jean-Emmanuel Sicart, and Marco Carenzo. “A Study
    of the Energy Balance and Melt Regime on Juncal Norte Glacier, Semi-Arid Andes
    of Central Chile, Using Melt Models of Different Complexity.” <i>Hydrological
    Processes</i>. Wiley, 2008. <a href="https://doi.org/10.1002/hyp.7085">https://doi.org/10.1002/hyp.7085</a>.
  ieee: F. Pellicciotti <i>et al.</i>, “A study of the energy balance and melt regime
    on Juncal Norte Glacier, semi-arid Andes of central Chile, using melt models of
    different complexity,” <i>Hydrological Processes</i>, vol. 22, no. 19. Wiley,
    pp. 3980–3997, 2008.
  ista: Pellicciotti F, Helbing J, Rivera A, Favier V, Corripio J, Araos J, Sicart
    J-E, Carenzo M. 2008. A study of the energy balance and melt regime on Juncal
    Norte Glacier, semi-arid Andes of central Chile, using melt models of different
    complexity. Hydrological Processes. 22(19), 3980–3997.
  mla: Pellicciotti, Francesca, et al. “A Study of the Energy Balance and Melt Regime
    on Juncal Norte Glacier, Semi-Arid Andes of Central Chile, Using Melt Models of
    Different Complexity.” <i>Hydrological Processes</i>, vol. 22, no. 19, Wiley,
    2008, pp. 3980–97, doi:<a href="https://doi.org/10.1002/hyp.7085">10.1002/hyp.7085</a>.
  short: F. Pellicciotti, J. Helbing, A. Rivera, V. Favier, J. Corripio, J. Araos,
    J.-E. Sicart, M. Carenzo, Hydrological Processes 22 (2008) 3980–3997.
date_created: 2023-02-20T08:18:45Z
date_published: 2008-09-15T00:00:00Z
date_updated: 2024-10-14T12:00:17Z
day: '15'
doi: 10.1002/hyp.7085
extern: '1'
intvolume: '        22'
issue: '19'
keyword:
- Water Science and Technology
language:
- iso: eng
month: '09'
oa_version: None
page: 3980-3997
publication: Hydrological Processes
publication_identifier:
  eissn:
  - 1099-1085
  issn:
  - 0885-6087
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: A study of the energy balance and melt regime on Juncal Norte Glacier, semi-arid
  Andes of central Chile, using melt models of different complexity
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 22
year: '2008'
...