Articles | Volume 25, issue 7
Hydrol. Earth Syst. Sci., 25, 4041–4059, 2021
https://doi.org/10.5194/hess-25-4041-2021
Hydrol. Earth Syst. Sci., 25, 4041–4059, 2021
https://doi.org/10.5194/hess-25-4041-2021

Research article 09 Jul 2021

Research article | 09 Jul 2021

Coupling saturated and unsaturated flow: comparing the iterative and the non-iterative approach

Natascha Brandhorst et al.

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Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on hess-2021-15', Gerrit H. de Rooij, 26 Jan 2021
    • AC1: 'Reply on RC1', Natascha Brandhorst, 16 Mar 2021
  • RC2: 'Comment on hess-2021-15', Orgogozo Laurent, 15 Feb 2021
    • AC2: 'Reply on RC2', Natascha Brandhorst, 16 Mar 2021
  • RC3: 'Comment on hess-2021-15', Anonymous Referee #3, 17 Feb 2021
    • AC3: 'Reply on RC3', Natascha Brandhorst, 16 Mar 2021

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to revisions (further review by editor and referees) (25 Mar 2021) by Philippe Ackerer
AR by Natascha Brandhorst on behalf of the Authors (05 May 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish subject to minor revisions (further review by editor) (18 May 2021) by Philippe Ackerer
AR by Natascha Brandhorst on behalf of the Authors (22 May 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (02 Jun 2021) by Philippe Ackerer
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Short summary
We compare two approaches for coupling a 2D groundwater model with multiple 1D models for the unsaturated zone. One is non-iterative and very fast. The other one is iterative and involves a new way of treating the specific yield, which is crucial for obtaining a consistent solution in both model compartments. Tested on different scenarios, this new method turns out to be slower than the non-iterative approach but more accurate and still very efficient compared to fully integrated 3D model runs.