Evaporation and Evapotranspiration (PDF)

Dr. Wossenu Abtew is a professional civil engineer working in water resources for over 25 years. He is also an agricultural engineer and a hydrologist. He graduated in interdisciplinary engineering focusing in Civil Engineering and Agricultural Engineering in Texas Tech University in 1989. He earned his MSc in Agricultural Engineering from Texas Tech University in 1986. Dr. Abtew designed three types of lysimeter systems and performed evaporation and evapotranspiration measurements from open water, wetlands and receding water tables. He has developed and published an evapotranspiration model (Abtew equation, Simple Abtew Equation) that is being applied in South Florida and several countries. He collaborated on evapotranspiration estimation software development "Program ET_SF".  Dr. Abtew is a Principal Engineer at the South Florida Water Management District. He has over 20 years of experience in the field of water resources at the South Florida Water Management District. He is a certified Diplomate, Water Resources Engineer (D.WRE) by the American Academy of Water Resources Engineers. He has published a proceedings book chapter, 48 published peer-reviewed articles and conference proceedings, over 60 conference presentations, manuals and technical reports.

Dr. Assefa M. Melesse is a water resources engineer with a background in remote sensing and geospatial applications to hydrologic modeling. He earned his ME and PhD  from the University of Florida in Agricultural Engineering with Hydrological Sciences and GIS concentrations and 3 minors (Civil Engineering, Environmental Engineering and remote sensing). His areas of research and experience include spatially distributed hydrologic modeling, ecohydrology, spatial surface water balance modeling, surface and groundwater interactions modeling, spatial evapotranspiration mapping using remote sensing, water-energy-carbon fluxes coupling and modeling, remote sensing hydrology, and land cover change detection and