Journal article

Long-term trends in evapotranspiration and runoff over the drainage basins of the Gulf of Mexico during 1901-2008

M Liu, H Tian, Q Yang, J Yang, X Song, SE Lohrenz, WJ Cai

Water Resources Research | Published : 2013

Abstract

The Gulf of Mexico (GOM) is facing large pressures from environmental changes since the beginning of the last century. However, the magnitude and long-term trend of total water discharge to the GOM and the underlying processes are not well understood. In this study, the dynamic land ecosystem model (DLEM) has been improved and applied to investigate spatial and temporal variations of evapotranspiration (ET) and runoff (R) over drainage basins of the GOM during 1901-2008. Modeled ET and discharge were evaluated against upscaled data sets and gauge observations. Simulated results demonstrated a significant decrease in ET at a rate of 15 mm yr century and an insignificant trend in runoff/prec..

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