Geodetic Signature of Continental Hydrology

Explore the geodetic signature of continental hydrology in this AGU Geodesy Section webinar featuring Kristel Chanard from Université de Paris - IPG. Delve into what geodesy can reveal about the water cycle, examining the Gravity Recovery And Climate Experiment (GRACE) and Follow-On missions. Learn about advanced techniques for filtering GRACE data, including observational gap filling with M-SSA and spatial filtering. Validate these methods through comparisons with SLR gravity coefficients and regional hydrological mass balance. Investigate hydrology and deformation in aquifer regions, focusing on the Ozark Aquifer system as a case study. Analyze groundwater wells, GRACE-derived loading models, and GNSS data to extract and model poroelastic signals, ultimately estimating surficial elastic parameters.

Intro
hat can geodesy reveal about the water cycle?
Outline - Geodetic signature of continental hydrology
avity Recovery And Climate Experiment & Folow-On missions
ut not an easy measure...
more objective filtering of GRACE data
TEP 1: Observational gap filling with M-SSA
TEP 2: M-SSA spatial filtering
SSA Gap filing validation: comparison with SLR gravity coefficients (CSR)
SSA solution validation regional hydrological mass balance
SSA solution: towards new regional mass balance?
drology & Deformation in aquifer regions
ample of the Ozark Aquifer system
on groundwater wells, GRACE derived loading model & GNSS data
tracting & modelling poroelastic signals
timating surficial elastic parameters