Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Sensitivity of a distributed temperature-radiation index melt model based on AWS observations and surface energy balance fluxes, Hurd Peninsula glaciers, Livingston Island, Antarctica
Year:2012
Research Areas
  • Geophysics
Information
Abstract
We use an automatic weather station and surface mass balance dataset spanning four melt seasons collected on Hurd Peninsula Glaciers, South Shetland Islands, to investigate the point surface energy balance, to determine the absolute and relative contribution of the various energy fluxes acting on the glacier surface and to estimate the sensitivity of melt to ambient temperature changes. Long-wave incoming radiation is the main energy source for melt, while short-wave radiation is the most important flux controlling the variation of both seasonal and daily mean surface energy balance. Short-wave and long-wave radiation fluxes do, in general, balance each other, resulting in a high correspondence between daily mean net radiation flux and available melt energy flux. We calibrate a distributed melt model driven by air temperature and an expression for the incoming short-wave radiation. The model is calibrated with the data from one of the melt seasons and validated with the data of the three remaining seasons. The model results deviate at most 140 mm w.e. from the corresponding observations using the glaciological method. The model is very sensitive to changes in ambient temperature: a 0.5 °C increase results in 56 % higher melt rates.
International
Si
JCR
No
Title
The Cryosphere
ISBN
1994-0416
Impact factor JCR
3,279
Impact info
Thomson Reuters ISI Impact Factor 2011 (último publicado)
Volume
6
10.5194/tc-6-539-2012
Journal number
3
From page
539
To page
552
Month
SIN MES
Ranking
Participants
  • Autor: Ulf Jonsell (Swedish Polar Research Secretariat)
  • Autor: Francisco Jose Navarro Valero (UPM)
  • Autor: Manolo Bañón (Observatorio Meteorológico de Alicante, Agencia Estatal de Meteorología (AEMET))
  • Autor: Javier Jesus Lapazaran Izargain (UPM)
  • Autor: Jaime Otero Garcia (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Simulación Numérica en Ciencias e Ingeniería
  • Departamento: Matemática Aplicada a las Tecnologías de la Información
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)