@article{fdi:010054416, title = {{M}onitoring marine phytoplankton seasonality from space}, author = {{D}emarcq, {H}erv{\'e} and {R}eygondeau, {G}. and {A}lvain, {S}. and {V}antrepotte, {V}.}, editor = {}, language = {{ENG}}, abstract = {{R}emote sensing techniques are used to study the large scale patterns related to the seasonal modes of variability of the marine phytoplankton. {T}en years of monthly composite maps of sea surface chlorophyll-a concentration and the {PHYSAT} database of four {P}hytoplanktonic {F}unctional {T}ypes ({PFT}s), both from {S}ea{W}i{FS}, are used to investigate characteristics of phytoplankton seasonality in the trades and westerlies wind oceanic biomes, where data density is adequate. {W}e use a combination of wavelet transform and statistical techniques that allow us to quantify both intensity and duration of the seasonal oscillation of chlorophyll-a concentration and {PFT}s relative occurrence, and to map these relationships. {N}ext, the seasonal oscillations detected are related to four {PFT}s revealing six major global phytoplanktonic associations. {O}ur results elucidate the intensity and duration of the seasonal dynamic of the chlorophyll-a concentration and of the relative occurrence of four {PFT}s at a global scale. {T}hus, the typology of the different types of seasonality is investigated. {F}inally, an overall agreement between the results and the biogeochemical provinces partition proposed by {L}onghurst is found, revealing a strong environmental control on the seasonal oscillation of primary producers and a clear latitudinal organization in the succession of the phytoplankton types. {R}esults provided in this study quantify the seasonal oscillation of key structural parameters of the global ocean, and their potential implications for our understanding of ecosystem dynamics.}, keywords = {{P}hytoplankton ; {S}easonality ; {S}easonal parameters ; {B}iogeography ; {R}emote sensing ; {S}urface chlorophyll concentration ; {P}hytoplankton {F}unctional ; {T}ypes ; {W}avelet transform}, booktitle = {}, journal = {{R}emote {S}ensing of {E}nvironment}, volume = {117}, numero = {}, pages = {211--222}, ISSN = {0034-4257}, year = {2012}, DOI = {10.1016/j.rse.2011.09.019}, URL = {https://www.documentation.ird.fr/hor/fdi:010054416}, }