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Comparative study of some estimation methods of evapotranspiration in the tropical zone: case of the region of Pointe-Noire (Congo)

Author Affiliations

  • 1Laboratory of Mechanics Energy and Engineering, Higher National Polytechnics School, Marien Ngouabi University, Brazzaville, Congo
  • 2Laboratory of Mechanics Energy and Engineering, Higher National Polytechnics School, Marien Ngouabi University, Brazzaville, Congo and Department of Exact Sciences, Higher Teacher′s Training School, Marien Ngouabi University, Brazzaville, Congo
  • 3Laboratory of Mechanics Energy and Engineering, Higher National Polytechnics School, Marien Ngouabi University, Brazzaville, Congo

Int. Res. J. Environment Sci., Volume 8, Issue (3), Pages 39-52, July,22 (2019)

Abstract

Sustainable management of water resources needs a perfect command of the terms of the hydrological balance among them evapotranspiration. This work deals with the comparison of some methods assessing potential evapotranspiration in the tropical zone. It is made using climatic data (temperature, rainfall, relative humidity, sunshine duration, wind speed and Piche evaporation) collected during the period 1990 to 2016 at Pointe-Noire airport in the south-west of Republic of Congo. The results show that, on the monthly scale, the values of potential evapotranspiration (ETP) obtained by the Penman-Monteith method, are closes to those obtained with the measured Piche evaporation. However, during the dry season (August-September), this method of calculation overestimates potential evapotranspiration up to 27.4%. Moreover, the application of the different approaches for estimating the annual ETP, highlights that the Penman-Monteith method, leads also to a better estimate of this climatic component. Nevertheless, this method overestimates Piche ETP in the year 1992, with a relative deviation up to 40.5%.

References

  1. XU C.Y. and Singh V.P. (1998)., Depend ence of evaporation on meteorological variables at different time scales and intercomparison of estimation methods., Hydrological Processes, 12(3), 429-442.
  2. Fisher D.K. and Pringle III H.C. (2013)., Evaluation of alternative methods for estimating reference evapotranspiration., Agricultural Sciences, 4(8A), 51-60.
  3. Habaieb H. and Masmoudi-Charfi C. (2003)., Calculation of the water requirements of the main cultivated crops in northern Tunisia: estimation of the reference evapotranspiration by various empirical formulas (case of the regions of Tunis, Beja and Bizerte)., Science and Global Change / Drought, 14 (4), 257-265.
  4. Nizinski J.J., Morand D., Loumeto J.-J., Luong-Galat A. and Galat G. (2008)., Bilan hydrique comparé d′une savane et d′une plantation d′eucalyptus dans le bassin du Kouilou (République Populaire du Congo)., Climatologie, 5, 99-112.
  5. MoukandiNkaya D.G., Mabiala B., Tathy C., Nganga D. and Deleporte P. (2010)., Paramétrisation de modèles de transfert hydrique dans le sol sous trois plantations d′eucalyptus dans la région de Pointe-Noire (Congo): applications à l′établissement de bilans hydriques., Annales de l′Université Marien Ngouabi, Sciences et Techniques, 11(4), 38-51.
  6. Tathy C., Matini L., Mabiala B., Antoine F. and Moukandi Nkaya G. (2010)., Hydrochemistry of groundwater in the aquifer AQ-2 in Pointe-Noire, south-west Congo Brazzaville., Res. J. Applied Sci., 5(5), 361-369.
  7. Peyrot B. (1983)., Interprétation: géomorphologiedulittoral etdelafaçademaritime atlantique delarépubliquepopulairedu Congo., Intravaux etdocumentsdegéographie tropicale.CECET, 49, 75-98.
  8. Moukandi Nkaya D. (2012)., Etude hydrogéologique, hydrochimique in situ et modélisation hydro dynamique du système aquifère du bassin sédimentaire côtier de la région de Pointe-Noire (Unpublished doctoral dissertation)., Université Marien Ngouabi Brazzaville, Congo.
  9. Allen R.G., Pereira L.S., Raes D. and Smith M. (1998)., Crop evapotranspiration-Guidelines for computing crop water requirements-FAO Irrigation and drainage paper 56., Fao, Rome, 300(9), D05109.
  10. Jensen Marvin E. and Allen Richard G. (2016)., Evaporation, evapotranspiration and irrigation water requirements., Manual 70, 2nd edition, ASCE, Reston VA, 1-528. ISBN: 978-0-7844-1405-7.
  11. Brochet P. and Gerbier N. (1968)., L′évapotranspiration. Aspect agro météorologique. Evaluation pratique de l′évapotranspiration potentielle., Monographiedela Météorologie Nationale, 65, S.M.M. climatologique, Paris, 1-65.
  12. Thornthwaite C.W. (1948)., An approach toward a rational classification of climate., Geograph. Rev., 38(1), 55-94.
  13. Agoussine M., Saidi M. and Igmoulan B. (2004)., Reconnaissance des ressources en eau du bassin d′Ouarzazate (Sud-Est Marocain)., Bulletindel′ Institut Scientifique, Rabat, section Science delaTerre, 26,81-92.
  14. Turc L. (1961)., Evaluation des besoins en eau d′irrigation, évapotranspiration potentielle., Ann. Agron., 12(1), 13-49.
  15. Riou Charles (1975)., Le détermination pratique del′évaporation., Application àl′Afrique Centrale. Mémoire ORSTOM, 80. ORSTOM, Paris, 1-236. ISBN: 2-7099-0371-7.
  16. Haude W. (1959)., Verdunstung und wasserbilanz im fluβgebiet des Nils., Geografiska Annaler, 41(1), 49-66.
  17. Diop S. (1997)., Contribution àl′étude hydrogéologique des aquifères fissurés dusocle cristallindu Sénégaloriental (Unpublished french translation doctoral dissertation)., Wesfälische Wilhelms Universität, Münster, Germany.
  18. Penman H.L. (1948)., Natural evaporation from open water, bare soil and grass., Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 193(1032), 120-145.
  19. Brutsaert Wilfried (1991)., Evaporation in to the atmosphere., Springer Science, Dordrecht, 1-299. ISBN : 978-90-481-8365-4.
  20. Bouchet R.J. (1963)., Evapotranspiration reelle, evapotranspiration potentielle, et production agricole., In Annales Agronomiques, 14, 743-824.
  21. Ben Mansour S. and Korichi R. (2013)., Etude de l′évapotranspiration réelle liée à l′évapotranspiration potentielle et à la production agricole phoenicicole à l′échellle de l′écosystème de l′ITAS. Mise au point d′un modèle basé sur la consommation de l′eau et la production agricole (Unpublished MSc. dissertation)., Université Kasdi Merbah, Ouargla, Algérie.
  22. Ndiaye P.M., Bodian A., Diop L. and Djaman K. (2017)., évaluation de vingt méthodes d, Physio-Géo. Géographie physique et environnement, 11(6), 129-146.
  23. Fatah B.O.U.T.E.L.D.J.A.O.U.I., Mohamed B.E.S.S.E.N.A.S.S.E. and Abdelhamid G.U.E.N.D.O.U.Z. (2012)., Etude comparative des différentes méthodes d, Nature & Technology, 7, 109-116.
  24. Labedzki L. (2011)., Evapotranspiration., In Tech Publisher, Rijeka, Croatia, 1-446. ISBN: 978-953-307-251-7.