Developing observational methods to drive future hydrological science: Can we make a start as a community?. Issue 3 (13th November 2019) - Beven, Keith; Asadullah, Anita; Bates, Paul; Blyth, Eleanor; Chappell, Nick; Child, Stewart; Cloke, Hannah; Dadson, Simon; Everard, Nick; Fowler, Hayley J.; Freer, Jim; Hannah, David M.; et al.