La Evapotranspiración Real (ETR) en la cuenca del río La Antigua, Veracruz: estado actual y ante escenarios de cambio climático

in this study is analyzed the real evapotranspiration (etr) for la antigua river basin, which is located in the southwestern portion of the gulf of mexico. for etr were constructed maps for the base scenario (1961-1990), as well as maps for the future scenarios a2 and b2 facing the climatic change, for the decades of 20's and 50's. the information was gathered from the registries of 16 climatologic stations, which has a minimum of 15 years within the period (1961-1990). the scenarios of temperature and precipitation for the calculation of etr were taken from the exits of global numerical models echam, gfdlr, and from the regional model precis. when applying the turc, coutage y hargreaves models, to the scenes a2 and b2, an increment in evapotranspiration with respect to the base scenario was observed. these results show that, considering increment in the projected temperature by the global models for the 20's and 50's decades, the etr will be increased in all the la antigua river basin having the maximum values in the low part of the basin, and the minimum values in the zone of mountain. the increase of the etr in the watershed will have to be considered in the administration and advantage of the hydraulic resources with agricultural aims, industrialist and urban.