# Evaluating CHIRPS and ERA5 for Long-Term Runoff Modelling with SWAT in Alpine Headwaters
## 5 Conclusions
Further assessments should also examine the performance of various GPPs across different pilot catchments and larger geographic domains, incorporating other satellite-based and reanalysis products, such as MSWEP-2.2 and others. Such efforts would enhance the generalizability and scalability of the findings. Conceptualization, D.B. ; methodology, D.B. and K.L. ; software, K.L. ; validation, D.B. ; formal analysis, D.B. ; investigation, D.B. and K.L. ; resources, D.B. and K.L. ; data curation, K.L. ; writing--original draft preparation D.B. and K.L. ; writing--review and editing, D.B. ; visualization, D.B. and K.L. ; supervision, D.B. All authors have read and agreed to the published version of the manuscript. This research received no external funding. The input data for the study were obtained from the following resources available in the public domain: Land: Digital elevation model (DEM) Copernicus--EU DEM v 1.1, [[https://land.copernicus.eu/imagery-in-situ/eu-dem/eu-dem-v1.1](https://land.copernicus.eu/imagery-in-situ/eu-dem/eu-dem-v1.1)]([https://land.copernicus.eu/imagery-in-situ/eu-dem/eu-dem-v1.1](https://land.copernicus.eu/imagery-in-situ/eu-dem/eu-dem-v1.1)) (accessed on 10 September 2018); European Environment Agency, European Soil Data Centre (ESDAC), [[https://esdac.jrc.ece.europa.eu/](https://esdac.jrc.ece.europa.eu/)]([https://esdac.jrc.ece.europa.eu/](https://esdac.jrc.ece.europa.eu/)) (accessed on 11 September 2018); European Environment Agency, Corine Land Cover (CLC) 2006 ver. 20, [[https://land.copernicus.eu/pan-european/corine-land-cover/CLC-2006](https://land.copernicus.eu/pan-european/corine-land-cover/CLC-2006)]([https://land.copernicus.eu/pan-european/corine-land-cover/CLC-2006](https://land.copernicus.eu/pan-european/corine-land-cover/CLC-2006)) (accessed on 11 September 2018). Climate and streamflow: Air temperature, precipitation, snow depth--European Climate Assessment & Dataset (ECA&D) [[https://www.ecad.eu](https://www.ecad.eu)]([https://www.ecad.eu](https://www.ecad.eu)) (accessed on 20 March 2019). Precipitation - Bundesministerium fur Nachhaltigkeit und Tourismus--eHYD, [[https://ehyd.gvat/#](https://ehyd.gvat/#)]([https://ehyd.gvat/#](https://ehyd.gvat/#)) (accessed on 18 March 2019). Precipitation - Autonome Provinz Bozen, [[http://weather.provinz.bz.it](http://weather.provinz.bz.it)]([http://weather.provinz.bz.it](http://weather.provinz.bz.it)) (accessed on 18 March 2019). Discharge--Bundesministerium fur Nachhaltigkeit und Tourismus--eHYD, [[https://ehyd.gvat.at/#](https://ehyd.gvat.at/#)]([https://ehyd.gvat.at/#](https://ehyd.gvat.at/#)) (accessed on 18 March 2019). Climate products: Temperature, wind speed, solar radiation, humidity (CFSR), National Centers for Environmental Prediction (NCEP) [[https://www.uoguelph.ca/watershed/w3s](https://www.uoguelph.ca/watershed/w3s)]([https://www.uoguelph.ca/watershed/w3s](https://www.uoguelph.ca/watershed/w3s)) (accessed on 25 April 2019). Precipitation--CHIRPS-V2.0 Climate Hazards Group InfraRed Precipitation with Station, [[ftp://ftp.chg.ucsb.edu/pub/org/chg/products/CHIRPS-2.0](ftp://ftp.chg.ucsb.edu/pub/org/chg/products/CHIRPS-2.0)]([ftp://ftp.chg.ucsb.edu/pub/org/chg/products/CHIRPS-2.0](ftp://ftp.chg.ucsb.edu/pub/org/chg/products/CHIRPS-2.0)) (accessed on 25 April 2019). Precipitation--ERA5 Grid--European Centre for Medium-Range Weather Forecasts--ERA5, [[https://www.ehyd.gvat.at/#](https://www.ehyd.gvat.at/#)]([https://www.ehyd.gvat.at/#](https://www.ehyd.gvat.at/#)) (accessed on 25 April 2019). //cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-single-levels?tab=form (accessed on 25 April 2019). The raw data supporting the conclusions of this article will be made available by the authors on request. **Acknowledgments:** We sincerely thank [PERSON], [PERSON] and [PERSON] for providing necessary hydrological and meteorological data that were not publicly available at the time, significantly enhancing the quality of the models developed in this paper.