@article{fdi:010061985,
  title = {{M}odeling near-surface firn temperature in a cold accumulation zone ({C}ol du {D}ome, {F}rench {A}lps) : from a physical to a semi-parameterized approach},
  author = {{G}ilbert, {A}. and {V}incent, {C}. and {S}ix, {D}. and {W}agnon, {P}atrick and {P}iard, {L}. and {G}inot, {P}atrick},
  editor = {},
  language = {{ENG}},
  abstract = {{A}nalysis of the thermal regime of glaciers is crucial for glacier hazard assessment, especially in the context of a changing climate. {I}n particular, the transient thermal regime of cold accumulation zones needs to be modeled. {A} modeling approach has therefore been developed to determine this thermal regime using only near-surface boundary conditions coming from meteorological observations. {I}n the first step, a surface energy balance ({SEB}) model accounting for water percolation and radiation penetration in firn was applied to identify the main processes that control the subsurface temperatures in cold firn. {R}esults agree well with subsurface temperatures measured at {C}ol du {D}ome (4250m above sea level (a.s.l.)), {F}rance. {I}n the second step, a simplified model using only daily mean air temperature and potential solar radiation was developed. {T}his model properly simulates the spatial variability of surface melting and subsurface firn temperatures and was used to accurately reconstruct the deep borehole temperature profiles measured at {C}ol du {D}ome. {R}esults show that percolation and refreezing are efficient processes for the transfer of energy from the surface to underlying layers. {H}owever, they are not responsible for any higher energy uptake at the surface, which is exclusively triggered by increasing energy flux from the atmosphere due to {SEB} changes when surface temperatures reach 0 degrees {C}. {T}he resulting enhanced energy uptake makes cold accumulation zones very vulnerable to air temperature rise.},
  keywords = {{FRANCE}},
  booktitle = {},
  journal = {{C}ryosphere},
  volume = {8},
  numero = {2},
  pages = {689--703},
  ISSN = {1994-0416},
  year = {2014},
  DOI = {10.5194/tc-8-689-2014},
  URL = {https://www.documentation.ird.fr/hor/fdi:010061985},
}