Seminar – Satellite earth observation and Hydrology – 19 November 2021 from 11-12

Estimating global water mass: a unique opportunity provided by merging satellite geodetic measurements with state-of-the-art Earth System models. 

In this presentation, Professor Eshan Forootan from Aalborg University will first review available satellite geodetic techniques to be used for monitoring the global water cycle. Then he will focus on the statistical inversion and sequential and Bayesian calibration and data assimilation algorithms that are being developed in his group for merging these multi-sensor data with Earth System models.

GRACE, GRACE-FO and GNSS, together with satellite altimetry are satellite geodetic techniques that can provide an almost direct measurement of the amount of mass redistribution within the Earth System. Reprocessing of GRACE(-FO) and GNSS derived loading estimates shows that both techniques see the same mass flux signals, although at different spatial and temporal scales. Satellite altimetry sees variations of surface water changes after implementing proper post processing algorithms known as waveform retracking algorithms. These measurements are however point-wise and spectrally different from mass estimated derived by other geodetic techniques. Combining these various observations in a physically meaningful manner is a challenging task, which is one of the main research activities at the Geodesy Group, Department of Planning, Aalborg University (AAU).

Speaker: Professor Ehsan Forootan, Aalborg University,

Time and place: November 19 from 11-12, buiding 115, Room 113

For more information, please contact, Professor Peter Bauer-Gottwein: or 41120827


Fri 19 Nov 21
11:00 - 12:00


DTU Miljø


Technical University of Denmark
Lyngby Campus
Building 115, Room 113