The knowledge of evapotranspiration is of great interest in many applications such as assessing irrigation water use. In this paper, a methodology is presented to estimate evapotranspiration using the surface energy balance model S-SEBI (Simplified Surface Energy Balance Index) and the evaporative fraction. The method is applicable under the assumptions of constant atmospheric conditions and su...

BIOME-BGC is a general ecosystem model designed to simulate hydrologic and biogeochemical processes across multiple scales. The objectives of this investigation were to compare BIOME-BGC estimates of hydrologic processes with observed data for different boreal forest stands and investigate factors that control simulated water fluxes. Model results explained 62 and 98% of the respective variance...

As a land–atmosphere coupling “hot spot”, the northern China climate transition zone has sharp spatial gradient of hydrothermal conditions, which plays an essential role in shaping and temporal pattern evapotranspiration-precipitation coupling, but whose mechanisms still remain unclear. This study analyzes variation strength (CS) transitional its relationship with soil moisture air temperature....

Most of the current parameterization schemes for Penman–Monteith–Leuning evapotranspiration (ET) model (PML) consider meteorological and energy factors land use types, but analysis effect soil moisture (SM) changes on ET processes lacks sufficient attention. This paper proposes a scheme sensitive parameters PML considering water content, i.e., coupling surface SM in calculation evaporation coef...

Evapotranspiration (ET) is the movement and transfer (i.e., flux) of water as a liquid at the Earth’s surface to the atmosphere as a gas. ET is a combination of open water evaporation and plant transpiration ( , which is the Sublimation transition of solid water (i.e., ice, snow) to vapor due to low atmospheric pressure (i.e., high altitude), dry air and high sunlight, is generally considered s...

Available energy (often expressed in terms of potential evaporation) and precipitation largely determine annual evapotranspiration and runoff rates in a region. The ratio of annual potential evaporation to precipitation, referred to as the aridity index by Budyko, has been shown to describe the evaporation ratio (the ratio of annual evapotranspiration to precipitation) of catchments from a rang...