@article{fdi:010086443,
  title = {{T}he {R}ole of irrigation expansion on historical climate change : insights from {CMIP}6},
  author = {{A}l-{Y}aari, {A}men and {D}ucharne, {A}. and {T}hiery, {W}. and {C}heruy, {F}. and {L}awrence, {D}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}o produce food for a growing world population, irrigated areas have increased from approximately 0.63 million km(2) of land in 1900 to 3.1 million km(2) of land in 2005. {D}espite this massive expansion, irrigation is still overlooked in most state-of-the-art {E}arth system models ({ESM}s) involved in the {C}oupled {M}odel {I}ntercomparison {P}roject phase 6 ({CMIP}6). {T}o our knowledge, only three {CMIP}6 models represent irrigation activities: {CESM}2, {GISS}-{E}2-1-{G}, and {N}or{ESM}2-{LM}. {H}ere, we investigate the role of irrigation on historical climate at global and regional scales by analyzing trends of key surface climate variables in {CMIP}6 simulations during 1900-2014. {T}he three models including irrigation show distinct behavior from the 15 models without irrigation over intensively irrigated areas (i.e., >50% of grid cell area is equipped by irrigation): both annual (months that correspond to monthly air temperature higher than 274 {K}) mean latent heat flux ({LHF}) and soil moisture increase over time, in contrast to the models without irrigation that show no trend or even a negative trend. {T}he positive {LHF} trend over intensively irrigated areas in the irrigation-on models is consistent with three satellite-based {LHF} products. {W}hile annual (considering the warmest month in a year) warming trends are found in these regions for most of the no-irrigation models, the increase in {LHF} induces a cooling trend for the models with irrigation, which was not confirmed by observational air temperature data sets. {T}hese findings, supported by satellite data, indicate the importance of improved representation of land management in the next generation of {ESM}.},
  keywords = {irrigation ; climate ; {CMIP}6 ; trend ; {MONDE}},
  booktitle = {},
  journal = {{E}arths {F}uture},
  volume = {10},
  numero = {11},
  pages = {e2022{EF}002859 [19 p.]},
  year = {2022},
  DOI = {10.1029/2022ef002859},
  URL = {https://www.documentation.ird.fr/hor/fdi:010086443},
}