1124 
the facilities used to establish the data set archive. P. Maisongrande and A. Ruimy are supported by CNES and 
CNRS through grants. The authors are also indebted to Stéphane Adam for his efficient technical support 
throughout this study. 
REFERENCES 
Asrar, G., Fuchs, M, Kanemasu, E.T. and J.L. Hatfield, 1984 : Estimating absorbed photosynthetically active 
radiation and leaf area index from spectral reflectance in wheat Agronomy Journal, 76, 300-306. 
Berthelot, B., Dedieu, G., Cabot, F., and S. Adam, 1994: Estimation of surface reflectances and vegetation 
indice using NOAA/AVHRR: Method and results at global scale. This issue. 
Go ward, S.N., and D.G. Dye, 1987 : Evaluating North-American net primary productivity with satellite 
observations. Advanced Space Research. 7(11), 165-174. 
Heimann, M., and C.D. Keeling, 1989 : A three-dimensional model of atmospheric CO2 transport based on 
observed winds. 2. Model description and simulated tracer experiments. In : Aspects of climate 
variability in the pacific and the western Americas.(ed. D.H.Peterson). Geophysical Monograph, 55, 
237-274. 
Heimann, M, Keeling, C.D. and C.J. Tucker, 1989 : A three-dimensional model of atmospheric CO2 transport 
based on observed winds. 3. Seasonal cycle and synoptic time scale variations. In : Aspects of climate 
variability in the pacific and the western Americasjed. D.HLPeterson). Geophysical Monograph, 55, 
237-274. 
Holben, B.N., 1986 : Characteristics of maximum-value composite images from temporal AVHRR data, 
calibration. Int. J. of Remote Sensing, 11, 1511-1519. 
Kaufman, Y.J. and B.N. Holben, 1993 : Calibration of the AVHRR visible and near-IR bands by atmospheric 
scattering, ocean glin t and desert reflection. Int. J. Remote Sensing, 14, 21-52. 
Kumar, M., and J.L. Monteith, 1981. Remote sensing of crop growth. In : Plants and the daylight spectrum 
(ed. H. Smith). London New York Toronto Sydney San Francisco : Academic Press, 133-144. 
Leemans, R_, and W.P. Cramer, 1991. The HASA database for mean monthly values of temperature, 
precipitation and cloudiness of a global terrestrial grid. Research Report RR-91-18 November 1991, 
International Institute of Applied Systems Analyses, Laxenburg, Austria. 61pp. 
London, J., Bojkov, R.D., Oltsmans, S. and J.I. Kelley, 1976 : Atlas of the global distribution of the total ozone 
July 1957 - June 1967, NCAR/TN-113+STR. 
McCree, K.J., 1972 : Test of current definitions of photosynthetically active radiation against leaf 
photosynthesis data. Agricultural Meteorology, 10,442-453. 
Monteith, J.L. 1972 : Solar radiation and productivity in tropical ecosystems. Journal of Applied Ecology, 9, 
744-766. 
Monteith, J.L. 1977 : C limate and the efficiency of crop production in Britain. Philosophical Transactions of 
the Royal Society of London B., 281, 277-294. 
Oort, A.H., 1983 : Global atmospheric circulation statistics, 1958 -1973 : NOAA Professional Paper 14. 
Rockville, Md. 
Planton, S., D6qu£, M. and C. Bellevaux, 1991 : Validation of an annual cycle simulation with a T42-L20 
GCM. Climate Dynamics, 5, 189-200. 
Rahman, H., Dedieu, G., 1994 : SMAC. A Simple Method for the Atmospheric Correction of satellite 
measurements in the solar spectrum. Int. J. Remote Sensing. In press. 
Ruimy, A., Dedieu, G., and Saugier, B. (1993-a). Methodology for the estimation of terrestrial net primary 
production from remotely sensed data. J. Geophys. Res., accepted for publication. 
Ruimy, A., Baldocchi, D.D., Jarvis, P.G., Saugier, B., and R. Valentini, (1993-b) : C02 fluxes over plant 
canopies : a literature review. Submitted to Tree Physiology. 
Stowe, L.L., R.M Carey, and P.P. Pellegrino, 1991 : Monitoring the ML Pinatubo aerosol layer with NOAA/11 
AVHRR data. Geophys. Res. Lett., 19, 159-162. 
Tarpley, J.D., Schneider, S.R., and R.L. Money, 1984 : Global vegetation indices from the NOAA-7 
meteorological satellite. J. Clim. Appl. Met., 23, 491-494. 
Tucker, C.J., Fung, I.Y., Keeling, C.D. and R.H. Gammon, 1986. Relationships between atmospheric CO2 
variations and a satellite-derived vegetation index. Nature, 319,195-199. 
Whitlock, C.H., Charlock, W.F., Staylor, W.F., Pinker, R.T., Laszlo, L, DiPasquale, R.C. and N.A. Ritchey, 
1993. WCRP surface radiation budget shortwave data product description - version 1.1. NASA 
Technical Memorandum 107747, NASA Langley Research Center, Compton, Virginia, USA.