Articles | Volume 24, issue 9
Hydrol. Earth Syst. Sci., 24, 4567–4574, 2020
https://doi.org/10.5194/hess-24-4567-2020
Hydrol. Earth Syst. Sci., 24, 4567–4574, 2020
https://doi.org/10.5194/hess-24-4567-2020

Technical note 21 Sep 2020

Technical note | 21 Sep 2020

Technical Note: Improved sampling of behavioral subsurface flow model parameters using active subspaces

Daniel Erdal and Olaf A. Cirpka

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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: Publish subject to revisions (further review by editor and referees) (12 Jun 2020) by Monica Riva
AR by Daniel Erdal on behalf of the Authors (18 Jun 2020)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (03 Jul 2020) by Monica Riva
RR by Anonymous Referee #2 (09 Jul 2020)
RR by Anonymous Referee #1 (25 Jul 2020)
ED: Publish as is (10 Aug 2020) by Monica Riva
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Short summary
Assessing model sensitivities with ensemble-based methods can be prohibitively expensive when large parts of the plausible parameter space result in model simulations with nonrealistic results. In a previous work, we used the method of active subspaces to create a proxy model with the purpose of filtering out such unrealistic runs at low cost. This work details a notable improvement in the efficiency of the original sampling scheme, without loss of accuracy.