Articles | Volume 21, issue 11
Hydrol. Earth Syst. Sci., 21, 5709–5724, 2017
https://doi.org/10.5194/hess-21-5709-2017
Hydrol. Earth Syst. Sci., 21, 5709–5724, 2017
https://doi.org/10.5194/hess-21-5709-2017

Research article 17 Nov 2017

Research article | 17 Nov 2017

New insights into the differences between the dual node approach and the common node approach for coupling surface–subsurface flow

Rob de Rooij

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (further review by Editor and Referees) (06 Jun 2017) by Philippe Ackerer
AR by Anna Wenzel on behalf of the Authors (17 Jul 2017)  Author's response
ED: Referee Nomination & Report Request started (20 Jul 2017) by Philippe Ackerer
RR by Anonymous Referee #1 (05 Sep 2017)
RR by Anonymous Referee #3 (14 Sep 2017)
RR by Anonymous Referee #2 (09 Oct 2017)
ED: Publish as is (14 Sep 2017) by Philippe Ackerer
ED: Publish subject to minor revisions (further review by Editor) (09 Oct 2017) by Philippe Ackerer
AR by Rob de Rooij on behalf of the Authors (10 Oct 2017)  Author's response    Manuscript
ED: Publish as is (11 Oct 2017) by Philippe Ackerer
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Short summary
The dual node and common node approach are widely used to simulate coupled surface–subsurface flows. In this study it is shown that the dual node approach should be conceptualized as a one-sided finite difference approximation of the vertical head gradients at the land surface. This consistent dual node approach can be more accurate as well as as more numerically efficient than the common node approach.