Hydrological loading: measuring and modeling
is a Working Group within Inter-Commission Committee on geodesy for Climate research (ICCC). This joint working group will undertake a multidisciplinary approach, leveraging expertise from geodesists, hydrologists and climate scientists. We will collaborate on data collection, analysis, and modeling efforts to achieve our objectives. Within this joint working group following objectives are envisaged
Chair: M.J. Tourian (Germany)
Vice-Chair(s): Joelle Nicolas (France), Makan Karegar (Germany)
(Affiliation: GGOS, Commisions 2 and 4)
Objectives
- Exploring the signature of climate change in hydrological signals
- Better understanding the hydrological loading: investigating the role of different compartments and different scales
- Feasibility assessment of the reconciliation of different measurement techniques and models and exploring their associated uncertainties
- Investigating the impact of the hydrological cycle and mass fluxes on geodetic response, aiming to enhance our understanding of the space-time scales linked to diverse deformation processes
Activities
- Signature of Climate Change: Investigate how hydrological loading serves as a sensitive indicator of climate change. By analyzing long-term geodetic records and climate data, we will seek to identify distinct patterns and trends that signify the impact of changing climate conditions.
- Compartments and Scales: Explore the intricate relationship between hydrological compartments (e.g., groundwater, surface water, snow, ice) and different spatial and temporal scales. This will involve dissecting the contributions of individual compartments and their interaction within larger hydrological systems.
- Measurement Techniques and Models: Explore the challenge of reconciling various geodetic measurement techniques (e.g., GNSS, InSAR, GRACE) and hydrological models (e.g., land surface models, hydrological models) used to study hydrological loading. We will assess the strengths and limitations of each approach and propose strategies for integration. We will conduct intercomparisons of different hydrological models and geodetic measurement techniques to understand their relative strengths and weaknesses.
- Uncertainty estimates: Develop guidelines and roadmaps for quantifying hydrological loading measurements and modeling uncertainties.
Expected Outcomes:
- Enhanced understanding of hydrological loading’s role in detecting climate change signatures.
- Insight into the contributions of different hydrological compartments and scales.
- Improved reconciliation of diverse measurement techniques and models.
- Guidelines and roadmaps for uncertainty quantification.
- Collaborative research publications and presentations.
- A network of experts contributing to ongoing advancements in geodesy for climate research.
Knowledge dissemination
- Organizing workshops, webinars, and conferences to facilitate knowledge sharing and dissemination of research findings.
- Organizing Special Issue in a Suitable Journal
- Organizing summer/autumn schools (hackweeks) to transfer knowledge to students.
- Regular meetings/discussion
- Organizing sessions in international conferences and also, ICCC meetings
Hydrological Loading: Measuring and Modeling 