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Experimental Hydrological Fluxes using Land Surface Model

Description of terrestrial hydrological flux components in terms of their geographical distribution and chronological variation is useful for water resources management, drought/flood assessment and climate related research. Earth Observation (EO) data from multitude platforms are providing wide ranging datasets that are useful for creation of spatially distributed parameters appropriate for hydrological budgeting and modeling.

Macro-scale, process based hydrological (Variable Infiltration Capacity - VIC) model has been adopted for modelling water balance components at uniform grid level. VIC, a semi-distributed & physically based hydrological model, solves both the water balance and the energy balance (Liang X., 1994). Model computes evapotranspiration, surface runoff, soil moisture, base flow and energy fluxes at the predefined grid resolution (few km to hundred km).

Grid Details and Features

9min (~16.5km) Grid level modelling frame work (water balance mode) has been setup for the entire county using Geo-spatial data sets and historic meteorological data. Current season daily meteorological data are used to compute daily hydrological fluxes at 9min grid level. The orderly description of hydrological fluxes are useful for quantifying spatial and temporal variation in basin/sub-basin scale water resources, periodical water budgeting and form vital inputs for studies on topics ranging from water resources management to land-atmosphere interactions including climate change.
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