@article{PAR00013617,
  title = {{C}onverting between {SMOS} and {SMAP} level-1 brightness temperature observations over nonfrozen land},
  author = {{D}e {L}annoy, {G}. {J}. {M}. and {R}eichle, {R}. {H}. and {P}eng, {J}. {Z}. and {K}err, {Y}ann and {C}astro, {R}. and {K}im, {E}. {J}. and {L}iu, {Q}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {S}oil {M}oisture and {O}cean {S}alinity ({SMOS}) and {S}oil {M}oisture {A}ctive {P}assive ({SMAP}) missions provide {L}evel-1 brightness temperature ({T}b) observations that are used for global soil moisture estimation. {H}owever, the nature of these {T}b data differs: the {SMOS} {T}b observations contain atmospheric and select reflected extraterrestrial ("{S}ky") radiation, whereas the {SMAP} {T}b data are corrected for these contributions, using auxiliary near-surface information. {F}urthermore, the {SMOS} {T}b observations are multiangular, whereas the {SMAP} {T}b is measured at 40 degrees incidence angle only. {T}his letter discusses how {SMOS} {T}b, {SMAP} {T}b, and radiative transfer modeling components can be aligned in order to enable a seamless exchange of {SMOS} and {SMAP} {T}b data in soil moisture retrieval and assimilation systems. {T}he aggregated contribution of the atmospheric and reflected {S}ky radiation is, on average, about 1 {K} for horizontally polarized {T}b and 0.5 {K} for vertically polarized {T}b at 40 degrees incidence angle, but local and short-term values regularly exceed 5 {K}.},
  keywords = {{A}tmosphere ; brightness temperature ({T}b) ; galaxy ; soil moisture ; {S}oil ; {M}oisture {A}ctive {P}assive ({SMAP}) ; {S}oil {M}oisture {O}cean {S}alinity ({SMOS})},
  booktitle = {},
  journal = {{I}eee {G}eoscience and {R}emote {S}ensing {L}etters},
  volume = {12},
  numero = {9},
  pages = {1908--1912},
  ISSN = {1545-598{X}},
  year = {2015},
  DOI = {10.1109/lgrs.2015.2437612},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00013617},
}