@article{PAR00008800,
  title = {{E}valuating the l-meb model from long-term microwave measurements over a rough field, {SMOSREX} 2006},
  author = {{M}ialon, {A}. and {W}igneron, {J}.{P}. and {D}e {R}osnay, {P}. and {E}scorihuela, {M}.{J}. and {K}err, {Y}ann},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he present paper analyzes the effects of roughness on the surface emission at {L}-band based on observations acquired during a long-term experiment. {A}t the {S}urface {M}onitoring of the {S}oil {R}eservoir {E}xperiment site near {T}oulouse, {F}rance, a bare soil was plowed and monitored over more than a year by means of an {L}-band radiometer, profile soil moisture and temperature sensors, and a local weather station, accompanied by 12 roughness campaigns. {T}he aims of this paper are the following: 1) to present this unique database and 2) to use this data set to investigate the semiempirical parameters for the roughness in {L}-band {M}icrowave {E}mission of the {B}iosphere, which is the forward model used in the {S}oil {M}oisture and {O}cean {S}alinity soil moisture retrieval algorithm. {I}n particular, we studied the link between these semiempirical parameters and the soil roughness characteristics expressed in terms of standard deviation of surface height (sigma) and the correlation length ({LC}). {T}he data set verifies that roughness effects decrease the sensitivity of surface emission to soil moisture, an effect which is most pronounced at high incidence angles and soil moisture and at horizontal polarization. {C}ontradictory to previous studies, the semiempirical parameter {Q}r was not found to be equal to 0 for rough conditions. {A} linear relationship between the semiempirical parameters {N} and sigma was established, while {N}-{H} and {N}-{V} appeared to be lower for a rough ({N}-{H} similar to 0.59 and {N}-{V} similar to -0.3) than for a quasi-smooth surface. {T}his paper reveals the complexity of roughness effects and demonstrates the great value of a sound long-term data set of rough {L}-band surface emissions to improve our understanding on the matter.},
  keywords = {{L}-band ; {L}-band {M}icrowave {E}mission of the {B}iosphere ({L}-{MEB}) model ; passive microwave ; roughness ; {S}oil {M}oisture and {O}cean {S}alinity ({SMOS})},
  booktitle = {},
  journal = {{IEEE} {T}ransactions on {G}eoscience and {R}emote {S}ensing},
  volume = {50},
  numero = {5},
  pages = {1458--1467},
  ISSN = {0196-2892},
  year = {2012},
  DOI = {10.1109/tgrs.2011.2178421},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00008800},
}