WP3. Linking Soil Properties, Soil Moisture, and Evapotranspiration

Lead: Nunzio Romano (Uni. Naples)

Participate: Uni. Twente, UPV, SLU

This WP concerns the retrieval of field/grid specific scaling functions (task 3.1) and their generalisation (task 3.2).

Task 3.1 Field/grid specific scaling functions between soil moisture and evapotranspiration:

This task will provide soil moisture datasets measured in two sub-catchments of ARHO at two different scales: at local scale (by the wireless sensor network) and at field scale (by the cosmic-ray neutron probe). With the availability of hierarchical information of soil moisture (from satellite, UAS, cosmic-ray probe, and capacitance probe) both upscaling and downscaling relationships will be developed to link soil moisture and evapotranspiration (as obtained from Task 1.1). Tests will be done at other sites that will be used to validate the proposed procedure (see next Task 3.2).

Task 3.2 Generalizing scaling functions between soil moisture and evapotranspiration

The STEMMUS numerical soil-water-atmosphere model (Zeng and Su, 2013, ITC; Yu et al., 2016, HESS) will be used as a numerical toolbox to examine the field/grid derived scaling functions between soil moisture and evapotranspiration (Task 3.1) in order to link the states of soil moisture to evapotranspiration products on regional scale, while pertaining to the physical consistency. The derived scaling relationship will be compared and used as benchmark for simplified parametrizations in other operational hydrological models (see WP4, WP5).

Deliverables:

D3.1. Field and grid specific scaling functions between soil moisture and evapotranspiration (month 16-18);

D3.2. Simulation results across the selected experimental sites (month 34-36).

Implementation Plan:

(to be updated)