@article{fdi:010048190,
  title = {{M}odelling {LAI} at a regional scale with {ISBA}-{A}-gs : comparison with satellite-derived {LAI} over southwestern {F}rance},
  author = {{B}rut, {A}. and {R}udiger, {C}. and {L}afont, {S}. and {R}oujean, {J}.{L}. and {C}alvet, {J}.{C}. and {J}arlan, {L}ionel and {G}ibelin, {A}.{L}. and {A}lbergel, {C}. and {L}e {M}oigne, {P}. and {S}oussana, {J}.{F}. and {K}lumpp, {K}. and {G}uyon, {D}. and {W}igneron, {J}.{P}. and {C}eschia, {E}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A} {CO}2-responsive land surface model (the {ISBA}-{A}-gs model of {M}eteo-{F}rance) is used to simulate photosynthesis and {L}eaf {A}rea {I}ndex ({LAI}) in southwestern {F}rance for a 3-year period (2001-2003). {A} domain of about 170 000 km(2) is covered at a spatial resolution of 8 km. {T}he capability of {ISBA}-{A}-gs to reproduce the seasonal and the interannual variability of {LAI} at a regional scale, is assessed with satellite-derived {LAI} products. {O}ne originates from the {CYCLOPES} programme using {SPOT}/{VEGETATION} data, and two products are based on {MODIS} data. {T}he comparison reveals discrepancies between the satellite {LAI} estimates and between satellite and simulated {LAI} values, both in their intensity and in the timing of the leaf onset. {T}he model simulates higher {LAI} values for the {C}3 crops than the satellite observations, which may be due to a saturation effect within the satellite signal or to uncertainties in model parameters. {T}he simulated leaf onset presents a significant delay for {C}3 crops and mountainous grasslands. {I}n-situ observations at a mid-altitude grassland site show that the generic temperature response of photosynthesis used in the model is not appropriate for plants adapted to the cold climatic conditions of the mountainous areas. {T}his study demonstrates the potential of {LAI} remote sensing products for identifying and locating models' shortcomings at a regional scale.},
  keywords = {},
  booktitle = {},
  journal = {{B}iogeosciences},
  volume = {6},
  numero = {8},
  pages = {1389--1404},
  ISSN = {1726-4170},
  year = {2009},
  URL = {https://www.documentation.ird.fr/hor/fdi:010048190},
}