| Popis: |
At the institute of geodesy (IfE) we are processing GRACE and GRACE-FO level 1B data to obtain the time variable monthly gravity field (TVG). For this we are using a 2 step variational equation approach (Koch et al. 2021) implemented in our inhouse developed and evolving software GRACE-SIGMA. The software determines different types of TVG: KBR only, LRI only and combined (KBR and LRI) L1B data based all in one step. This allowes an easier and faster intercomparison in terms of spectral and spatial analysis. After determining the gravity field our processing chain calculates the post-fit range-rage residuals which reveals uncertenties e.g. in sensor models, background models, etc. At IfE we are studying these residuals to explain some geophysical phenomena and sensor behavior anomalies. On my poster I focusing on sensor behaviours derived from LRI post-fit range rate residuals. In additon I will show our recent improvements in software. |
