Multiscale remote sensing assessment of water cycle modelling outputs
- 1Water and global change Group, CREAF, Edifici C, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain
- 2Grumets Research Group, CREAF, Edifici C, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain
- 3Institut de Ciències del Mar, CSIC, Passeig Marítim, 37-49 08003, Barcelona, Spain
The selection of a suitable spatial resolution for the inputs and outputs of many types of modelling is crucial in most of requirements analysis.
The easy and quick solution, the highest possible spatial resolution, is not always feasible, or at least, is not the best in terms of cost – benefit.
This work aims to analyse and assess the outputs of the water quantity SWAT (model (https://swat.tamu.edu/) at different spatial detail and fragmentation of HRUs (hydrologic response units) and the corresponding validation with remote sensing products at different spatial resolutions.
This work is being developed within the framework of the AquaINFRA project (https://aquainfra.eu/) which creates an EOSC-based (https://eosc-portal.eu/) research infrastructure for an integrated vision of the hydrosphere (inland + marine). Thus, our goal is to validate selected model outputs from inland and marine components in one of the project use cases.
The study area of the use case is located in the northwest Mediterranean region, specifically in the central Catalonia coast: the Tordera river basin (898 km2) and the connected coastal neighbouring of its mouth. The inland landscape is mainly a heterogeneous mosaic of forests (upper river basin) and shrublands, croplands, and urban + industrial zones (lower river basin). This area shows an 800 mm mean annual precipitation and 13 ºC mean annual air temperature.
This study starts with the multiscale analysis of the evapotranspiration (ET): monthly time series (2011-2022) intercomparison between SWAT modelling outputs at different numbers of HRUs (range 261 - 1958) and the remote sensing ET products: from MODIS (500m) to Landsat (30m) and other modelling products, such as C3S (Copernicus Climate Change Service; 10km).
Some of the outputs from the inland model are selected as inputs for the regional coastal model (MitGCM + BFM), where again, the most suitable spatial resolution is a key property for the integrated models.
(This project has received funding from the European Commission’s Horizon Europe Research and Innovation programme under grant agreement No 101094434).
How to cite: Pascual Sanchez, D., Batlle, A., Flo, E., Otsu, K., Prat, E., Garcia, X., and Pesquer, L.: Multiscale remote sensing assessment of water cycle modelling outputs , EGU General Assembly 2024, Vienna, Austria, 14–19 Apr 2024, EGU24-16008, https://doi.org/10.5194/egusphere-egu24-16008, 2024.
