ACS  Vol.3 No.1 , January 2013
Dynamics and Diurnal Variations of Surface Radiation Budget over Agricultural Crops Located in Sudanian Climate

Energy exchange between land and atmosphere are important in climatic processes. In this paper, the seasonal dynamics and diurnal variations of surface radiation components of agricultural crops are investigated. One year data are used to emphasize the separate contribution of each radiation balance component. From the energy budget equation and FAO empirical model, we compare the clear sky solar radiation and the incoming short wave radiation in order to highlight aerosols and water vapor role in the studied area. The analysis show two important results: 1) The relevance of the short wave radiation in the net radiation budget especially in the wet season and 2) The variations of the long wave radiation were small. Analyses provide an understanding of net radiation seasonal variations in the northern part of Benin.

Cite this paper
B. Kounouhéwa, O. Mamadou, G. N’Gobi and C. Awanou, "Dynamics and Diurnal Variations of Surface Radiation Budget over Agricultural Crops Located in Sudanian Climate," Atmospheric and Climate Sciences, Vol. 3 No. 1, 2013, pp. 121-131. doi: 10.4236/acs.2013.31014.
[1]   J. Skhula and P. A. Dirmeyer, “Albedo as a Modulator of Climate Response to Tropical Deforestation,” Journal of Geophysical Research, Vol. 99, No. D10, 1994, pp. 863-877.

[2]   G. M. Woodwell, “Radiation and the Patterns of Nature,” Science, Vol. 156, No. 3774, 1967, pp.461-470. doi:10.1126/science.156.3774.461

[3]   K. Ya. Kondratyev, “Radiation in the Atmosphere”, Academic Press Inc., Waltham, 1969.

[4]   C. N. Awanou, P. F. Kieno and X. Berger, “Climatisation en Pays Chauds et Secs par Toiture Diode, ”Revue de Physique Appliquée, Vol. 22, No. 6, 1987, pp. 413-423. doi:10.1051/rphysap:01987002206041300

[5]   S. Amoussa, “Estimation of Global Solar Radiation in Benin,” Renewable Energy, Vol. 2, No. 3, 1992, pp. 311-317. doi:10.1016/0960-1481(92)90043-3

[6]   S. E. Nicholson, “Climatic and Environmental Change in Africa during the Last Two Centuries,” Climate Research, Vol. 17, No. 2, 2001, pp. 123-144. doi:10.3354/cr017123

[7]   H. D. Eva, A. Brink and D. Simonetti, “Monitoring Land Cover Dynamics in Sub-Saharian Africa. A Pilot Studing Using Earth Observing Satellite Data from 1975 and 2000,” European Commission Directorate-General, EUR 22498 EN-DG Joint Research Centre, Institute for Environment and Sustainability, Office for Official Publications of the European Communities, Luxembourg, 2006.

[8]   J. G. Charney, “Dynamics of Deserts and Drought in the Sahel,” Quarterly Journal Royal Meteorology Society, Vol. 101, No. 428, 1975, pp.193-202. doi:10.1002/qj.49710142802

[9]   O. Mamadou, S. Galle, J.-M. Cohard, B. Kounouhéwa, A. Diedhiou, T. Pellarin, R. Biron, S. Boubkraoui, and C. N. Awanou “Annual and Seasonal Energy Budget Variations of a Fallow and a Clear Forest in Sudanian Climate,” 4th AMMA International Conference, Toulouse, 2-6 July 2012, p. 220.

[10]   S. P. Arya, “Introduction to Micrometeorology,” 2nd Edition, Academic Press, Waltham, 2001.

[11]   J. G. Charney, W. J. Quirk, S. H. Chow and J. Kornfield, “A Comparative Study of the Effects of Albedo Change on Drought in Semi-Arid Regions,” Journal of Atmospheric Science, Vol. 34, No. 9, 1977, pp. 1366-1385. doi:10.1175/1520-0469(1977)034<1366:ACSOTE>2.0.CO;2

[12]   A. K. Betts, J. H. Ball and J. H. McCaughey, “Near-Surface Climate in the Boreal Forest,” Journal of Geophysical Research, Vol. 106, No. D24, 2001, pp. 529-541. doi:10.1029/2001JD900047

[13]   A. Boone, B. Decharme, F. Guichard, P. de Rosnay, G. Balsamo, A. Beljaars, F. Chopin, et al., “The AMMA Land Surface Model Intercomparison Project (ALMIP),” Bulletin of the American Meteorological Society, Vol. 90, No. 12, 2009, pp. 1865-1880. doi:10.1175/2009BAMS2786.1

[14]   T. Lebel, B. Cappelaere, N. Hanan, S. Levis, L. Descroix, S. Galle, L. Kergoat, E. Mougin, C. Peugeot, L. Seguis and B. Vieux, “AMMA-CATCH Studies in the Sahelian Region of West Africa: An Overview,” Journal of Hydrology (AMMA-CATCH Special Issue),Vol. 375, No. 1-2, 2009, pp. 3-13.

[15]   M. Lelay and S. Galle, “How Changing Rainfall Regimes May Affect the Water Balance: A Modeling Approach in West Africa,” IAHS Press, Toronto, 2005.

[16]   M. Judex, J. Rohring, O. Schulz and H.-P. Thamm, “Impetus Atlas du Bénin. Resultats de Recherche 2000-2007,” 3ème Edition, Département de Géographie, Université de Boon, Boon, 2009.

[17]   I. Zin, S. Galle, C. Guérin, S. Mascle-Le Hégarat, C. Ottlé, J. Seghieri and M. Zribi, “Remote Sensing Data and Ground Measurements Merging for Land Cover/Land Use Monitoring and Hydrological Modelling in Benin,” 3rd International COPROMAPH3 (Contemporary Problems in Mathematical Physics) Conference, Cotonou, 2003.

[18]   A. Guyot, J.-M. Cohard, S. Anquetin, S. Galle and C. R. Lloyd, “Combined Analysis of Energy and Water Balances to Estimate Latent Heat Flux of a Sudanian Small Catchment,” Journal of Hydrology, Vol. 375, No. 1-2 , 2009, pp. 227-240. doi:10.1016/j.jhydrol.2008.12.027

[19]   R. Allen, L. S. Pereira, D. Raes and M. Smith, “Crop Evapotranspiration—Guidelines for Computing Crop Water Requirements—FAO Irrigation and Drainage Paper 56,” Food and Agriculture Organization of the United Nations, Rome, 1998.

[20]   F. Timouk, L. Kergoat, E. Mougin, C. R. Lloyd, E. Ceschia, J.-M. Cohard, P. de Rosnay, P. Hiernaux, V. Demarez and C. M. Taylor, “Response of Surface Energy Balance to Water Regime and Vegetation Development in a Sahelian Landscape,” Journal of Hydrology, Vol. 375, No. 1-2, 2009, pp. 178-189. doi:10.1016/j.jhydrol.2009.04.022

[21]   B. Monteny and G. Gosse, “Analyse et Estimation du Rayonnement net d'une Culture de Panicum Maximum en Zone Tropicale Humide,” Oecol Plant, Vol. 11, No. 2, 1976, pp. 173-191.

[22]   D. Ramier, N. Boulain, B. Cappelaere, F. Timouk, M. Rabanit, C. R. Lloyd, S. Boubkraoui, F. Métayer, L. Descroix and V. Wawrzyniak, “Towards an Understanding of Coupled Physical and Biological Processes in the Cultivated Sahel-1. Energy and Water,” Journal of Hydrology, Vol. 375, No. 1-2, 2009, pp. 204-216. doi:10.1016/j.jhydrol.2008.12.002

[23]   A. Guyot, “Estimation de l’Evapotranspiration sur un Couvert Complexe par Utilisation de la Scintillométrie Infrarouge. Application à un Bassin Versant de Zone Soudano-Sahélienne (Bénin),” Thèse de l’Université de Grenoble, Grenoble, 2010.

[24]   B. A. Monteny, J. Humbert, J. P. Lhomme and J. M. Kalms, “Le Rayonnement net et l’Estimation de l’Evapotranspiration en Cote d’Ivoire,” Agricultural and Forest Meteorology, Vol. 23, No. 1, 1981, pp. 45-59. doi:10.1016/0002-1571(81)90090-X

[25]   A. K. Betts, “Land-Surface-Atmosphere Coupling in Observations and Models,” Journal of Advances in Modeling Earth Systems, Vol. 1, No. 4, 2009, pp. 1-18.

[26]   A. Calo, F. Giorgessi, L. Sansone, D. Tomasi and G. Zerbi, “Recherches sur le Rapport Entre le Flux de Sève, la Transpiration et la Vigueur dans la Vigne Selon le Mode de Conduite,” Vitis, Vol. 38, No. 1, 1999, pp. 7-13.