@article{fdi:010090127,
  title = {{E}valuation of reanalysis estimates of precipitation, radiation, and temperature over {B}enin ({W}est {A}frica)},
  author = {{B}odjrenou, {R}. and {C}ohard, {J}. {M}. and {H}ector, {B}asile and {L}awin, {E}. {A}. and {C}hagnaud, {G}. and {D}anso, {D}. {K}. and {M}'po, {Y}. {N}. and {B}adou, {F}. and {A}hamide, {B}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n {W}est {A}frica, climatic data issues, especially availability and quality, remain a significant constraint to the development and application of distributed hydrological modeling. {A}s alternatives to ground-based observations, reanaly-sis products have received increasing attention in recent years. {T}his study aims to evaluate three reanalysis products, namely, {ERA}5, {W}ater and {G}lobal {C}hange ({WATCH}) {F}orcing {D}ata ({WFD}) {ERA}5 ({WFDE}5), and {MERRA}-2, from 1981 to 2019 to determine their ability to represent four hydrological climates variables over a range of space and time scales in {B}enin. {T}he variables from the reanalysis products are compared with point station databased metrics {K}ling-{G}upta effi- ciency ({KGE}), mean absolute error ({MAE}), correlation, and relative error in precipitation annual ({REPA}). {T}he results show that {ERA}5 presents a better correlation for annual mean temperature (between 0.74 and 0.90) than do {WFDE}5 (0.63-0.78) and {MERRA}-2 (0.25-0.65). {B}oth {ERA}5 and {WFDE}5 are able to reproduce the observed upward trend of tem-perature (0.2 & {DEG};{C} decade -1) in the region. {W}e noted a systematic cold bias of -1.3 & {DEG};{C} in all reanalyses except {WFDE}5 (-0.1 & {DEG};{C}). {O}n the monthly time scale, the temperature of the region is better reproduced by {ERA}5 and {WFDE}5 ({KGE} & {GE}; 0.80) than by {MERRA}-2 ({KGE} , 0.5). {A}t all time scales, {WFDE}5 produces the best {MAE} scores for longwave ({LW}) and shortwave ({SW}) radiation, followed by {ERA}5. {WFDE}5 also provides the best estimates for the annual precipitation ({REPA} 2 ]-25, 25[ and {KGE} & {GE}; 50% at most stations). {ERA}5 produces similar results, but {MERRA}-2 performs poorly in all the metrics. {I}n addition, {ERA}5 and {WFDE}5 reproduce the bimodal rainfall regime in southern {B}enin, unlike {MERRA}-2, but all products have too many small rainfall events.},
  keywords = {{A}frica ; {C}limate change ; {C}limate variability ; {H}ydrometeorology ; {L}ongwave ; radiation ; {T}emperature ; {AFRIQUE} {DE} {L}'{OUEST} ; {BENIN}},
  booktitle = {},
  journal = {{J}ournal of {A}pplied {M}eteorology and {C}limatology},
  volume = {62},
  numero = {8},
  pages = {1005--1022},
  ISSN = {1558-8424},
  year = {2023},
  DOI = {10.1175/jamc-d-21-0222.1},
  URL = {https://www.documentation.ird.fr/hor/fdi:010090127},
}