AUTHOR=Bogena Heye R. , Strati Virginia , Güntner Andreas , Chew Clara C. , Schrön Martin TITLE=Editorial: Innovative Methods for Non-invasive Monitoring of Hydrological Processes From Field to Catchment Scale JOURNAL=Frontiers in Water VOLUME=3 YEAR=2021 URL=https://www.frontiersin.org/journals/water/articles/10.3389/frwa.2021.641458 DOI=10.3389/frwa.2021.641458 ISSN=2624-9375