@article{fdi:010062322, title = {{T}wo chaotic global models for cereal crops cycles observed from satellite in northern {M}orocco}, author = {{M}angiarotti, {S}ylvain and {D}rapeau, {L}aurent and {L}etellier, {C}.}, editor = {}, language = {{ENG}}, abstract = {{T}he dynamics underlying cereal crops in the northern region of {M}orocco is investigated using a global modelling technique applied to a vegetation index time series derived from satellite measurements, namely, the normalized difference vegetation index from 1982 to 2008. {T}wo three-dimensional chaotic global models of reduced size (14-term and 15-term models) are obtained. {T}he model validation is performed by comparing their horizons of predictability with those provided in previous studies. {T}he attractors produced by the two global models have a complex foliated structure-evidenced in a {P}oincare section-rending a topological characterization difficult to perform. {T}hus, the {K}aplan-{Y}orke dimension is estimated from the synthetic data produced by our global models. {O}ur results suggest that cereal crops in the northern {M}orocco are governed by a weakly dissipative three-dimensional chaotic dynamics.}, keywords = {{MAROC}}, booktitle = {}, journal = {{C}haos}, volume = {24}, numero = {2}, pages = {art. 023130}, ISSN = {1054-1500}, year = {2014}, DOI = {10.1063/1.4882376}, URL = {https://www.documentation.ird.fr/hor/fdi:010062322}, }