A fully coupled regional reanalysis framework
Dr. Jan Keller
Deutscher Wetterdienst | +49 69 8062 2859 |
Prof. Dr. Harrie-Jan Hendricks-Franssen
Forschungszentrum Jülich | +49 2461 614462 |
Dr. Arianna Valmassoi
Deutscher Wetterdienst | - |
This project aims to establish an Integrated Monitoring System (IMS) combining numerical modeling (for atmosphere, land surface and subsurface) and observations, i.e., the goal is to establish a reanalysis for the Earth system over Europe. Therefore, the system will be designed to provide the best estimates of the state of the Earth system for past decades. This will build a basis for further exploration in DETECT and beyond to assess the impact of human action on the terrestrial water and energy cycles. The system will account for the relevant processes in the terrestrial system as well as the exchanges of energy and mass between atmosphere, land surface and subsurface. This is realized in a regional reanalysis framework which consists of a fully-coupled terrestrial modeling framework including an explicit representation of irrigation processes as a main component of the anthropogenic water use and an adequate data assimilation scheme. While first relying on a weakly-coupled data assimilation scheme (i.e., all parts of the terrestrial system will be updated in separate data assimilation systems), work will later focus on the development of a strongly-coupled data assimilation scheme (i.e., all parts of the terrestrial system will be updated in a single consistent data assimilation step).