@article{PAR00025264,
  title = {{A}nnual variations in phytoplankton biomass driven by small-scale physical processes},
  author = {{K}eerthi, {M}. {G}. and {P}rend, {C}. {J}. and {A}umont, {O}livier and {L}evy, {M}arina},
  editor = {},
  language = {{ENG}},
  abstract = {{P}hytoplankton biomass exhibits substantial year-to-year changes, and understanding these changes is crucial to fisheries management and projecting future climate. {T}hese annual changes result partly from low-frequency climate modes that also lead to variations in sea surface temperature ({SST}). {H}ere we evaluate the contribution of small scales to annual fluctuations based on a global analysis of satellite observations of sea surface chlorophyll ({SC}hl), an indicator of phytoplankton biomass, and of {SST} from 1999 to 2018. {W}e disentangle the spatio-temporal scales of variability in the time series and find that besides the prominent seasonal cycle, {SC}hl is dominated by high-frequency fluctuations (<three months) at small spatial scales (<50 km)-which accumulates over annual scales in contrast to {SST}. {T}he results suggest that observations and models with high spatio-temporal resolutions are necessary to understand annual changes in {SC}hl. {T}he rapid response of {SC}hl to small-scale physical processes, combined with intrinsic ecosystem interactions and air-sea interaction feedbacks, may explain the differences between annual variations in {SST} and {SC}hl. {A}nnual variations of phytoplankton biomass can be explained by processes acting on small spatio-temporal scales, according to a global analysis of satellite observations of sea surface chlorophyll and temperature from 1999 to 2018.},
  keywords = {{MONDE}},
  booktitle = {},
  journal = {{N}ature {G}eoscience},
  volume = {15},
  numero = {},
  pages = {1027--1033},
  ISSN = {1752-0894},
  year = {2022},
  DOI = {10.1038/s41561-022-01057-3},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00025264},
}