Global analysis of how effective and topographic catchment areas differ

ScienceDaily | Sep 22, 2020 at 8:32 PM
  • Using the ECI, the team led by Liu and Hartmann was able to demonstrate that the assumption of a closed water balance, i.e. that the level of a river changes only through precipitation and evaporation from its topographic area, for example, does not apply to a considerable number of catchments around the world.
  • Every third catchment studied has an effective catchment area that is even greater than twice or less than half its topographical area.
  • It can also be used in the analysis of the effects of climate and land use changes on cross-boundary water exchange.