LODYC - UPMC
Case 100- 4, place Jussieu
75252 PARIS Cedex05
Tel: 33 1 44 27 49 71
PhD in `Methodes Physiques en télédétection' (Université Paris VII, 1990). Full time scientist in CNRS since 1992. Since 1988, she studies the air-sea CO2 fluxes at large scale making use of remotely sensed parameters (wind speed, SST and ocean color). She has extensively validated wind speeds derived from SEASAT scatterometer and microwave radiometer, Geosat altimeter, SSM/I microwave radiometer, ERS/AMI scatterometer and NSCAT scatterometer. She derived a temporal survey of CO2 exchange coefficient at global scale from 1985 up to now using remotely sensed wind speeds. She also develops methods to extrapolate, in the equatorial Pacific ocean, in-situ measurements of oceanic CO2 partial pressure (pCO2) in space and time using remotely sensed SST.
Boutin, J., and J. Etcheto, Seasat scatterometer versus Scanning Multichannel Microwave Radiometer wind speeds: a comparison on a global scale, J. Geophys. Res., 95, 22275-22288, 1990.
Boutin, J., and J. Etcheto, Consistency of Geosat, SSM/I and ERS1 global surface wind speeds; comparison with in-situ data, J. Atmos. Oceanic Technol., 13, 183-197, 1996a.
Boutin, J., L. Siefridt, J. Etcheto, and B. Barnier, Comparison of ECMWF and satellite wind speed from 1985 to 1992, Int. J. Remote Sens., 17, 2897-2913, 1996b.
Boutin, J., and J. Etcheto, Long term variability of the air-sea CO2 exchange coefficient: Consequences for the CO2 fluxes in the equatorial Pacific Ocean, Global Biogeochem. Cycles, 11, 453-470, 1997.
Boutin J., J. Etcheto, Y. Dandonneau, D.C.E. Bakker, P.D. Nightingale, R.D. Ling, R.A. Feely, R. Wanninkhof, H. Y. Inoue, M. Ishii and N. Metzl, Satellite Sea Surface Temperature: A useful tool for interpreting in situ pCO2 measurements in the equatorial Pacific Ocean, Tellus, Special Issue: Fifth International Carbon Dioxide Conference, in press, 1998.
Role in the SMOS mission:
She will study the surface roughness effect on the brightness temperature measurement in L-band. As a first step, wind speed measurements will be used as a proxy for surface roughness. She will estimate the effect of an error on the wind speed measured on other platforms on the retrieved SSS. The effect of SST errors due to retrieval algorithms flaws and/or to interpolation of SST measured on other satellites will also be quantified. These studies will state more precisely the expected SSS accuracy at regional scale retrieved from L-band radiometer measurements. They must be supported by L-band radiometric meaurements made onboard oceanic platforms or with an airborne and simultaneous in situ SSS observations.
Being aware of the expected SSS retrieval caracteristics, she will develop methods to properly take this information into account for improving large scale estimates of air-sea CO2 fluxes.