Describe What GLDAS Is. What Is VIC’s Role in GLDAS?
Global Land Assimilation System is designed to incorporate the ground-based and satellite observational data products with the help of complex land surface data assimilation and modeling techniques to develop optimal fields of fluxes and surface states. The Variable Infiltration Capacity (VIC) simulates a series of land surface parameters data in the GLDAS. The simulation is conducted using soil moisture and the VIC climatology model set to three-hourly temporal resolution. The first simulation was initiated on 1st January 1979, and the resolution and range have been set to 1.0 degree up to date.
What was the goal of the study? Were additional data sets used as well as GRACE? Where was the study area? What was a key finding?
The Gravity Recovery and Climate Experiment (GRACE) supply unmatched viewpoints to geoscientists and hydrologists to investigate and understand the terrestrial water storage variation at global and continental scales. A study conducted to judge the qualitative measures of total water storage variation from GRACE intended to examine the seasonal and spatial variations of the surface water. Additional data sets such as variables from the GLDAS were utilized to inquire the way Total Water Storage was separated into soil moisture components and canopy water.
The study area was the northwestern part of India, which incorporates states like Haryana, Rajasthan, New Delhi, and Uttar Pradesh. The study shows that both the calculated groundwater storage and GRACE transformation indicate a reduction of the groundwater capacity. The survey’s overall findings approve the use of GRACE hydrology data in observing water availability and storage dynamics at a regional scale. The use of hydrological models combined with GRACE data, which is available in every part of the world, will improve hydrological studies which may enhance regional sustainable water resource management