Investigating Effects of Evapotranspiration and Infiltration on Groundwater Levels with Integrated Hydrometeorological Measurements and Land Surface Processes Simulations

Project Details


Evapotranspiration (ET) and infiltration are critical fluxes affecting hydrologicalcycles of land process. The ET furthermore links energy exchange between land andatmosphere. Variations of both fluxes are controlled by micrometeorology, surfacecondition, and hydrogeology. Groundwater is the most important water resources inaddition to surface water. Except human pumping, although groundwater budget isconceptually dominated by ET and infiltration by root uptaking and downwardmoving of soil water, there is a critical knowledge gap on how these near‐surfacefluxes facilitate variations of groundwater levels. Interestingly, how fast or delayedresponses of groundwater levels to these fluxes during event or seasonal scales andtheir interconnected mechanisms are furthermore complicated. This study proposedintegrated hydrometeorology experimental measurements and land surface processmodel developments. On the experimental setup, capacity of subsurface hydrologicalmeasurement will be deployed to integrated current micrometeorology instrumentsat the National Central University site. On the modeling aspect, land surface processmodel will be integrated into variable‐saturated subsurface model to providecapabilities of investigating nexus of micrometeorology factors, unsaturated zone,and groundwater with coupling simulations. The research will provide contributionsto understand dynamic nexus of ET, infiltration, and groundwater from event toseasonal scales. Novel scientific knowledge and solution tools of handlinginteractions among atmospheric water, surface water, soil water, and groundwaterwill be delivered to facilitate simulations of land surface process and watershedhydrology.
Effective start/end date1/08/1631/07/17

UN Sustainable Development Goals

In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This project contributes towards the following SDG(s):

  • SDG 6 - Clean Water and Sanitation
  • SDG 7 - Affordable and Clean Energy
  • SDG 17 - Partnerships for the Goals


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