New flood frequency estimates for the largest river in Norway  based on the combination of short and long time series

Engeland, Kolbjørn; Aano, Anna; Steffensen, Ida; Støren, Eivind; Paasche, Øyvind

doi:https://doi.org/10.5194/hess-24-5595-2020

Articles | Volume 24, issue 11

https://doi.org/10.5194/hess-24-5595-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/hess-24-5595-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 24, issue 11

Research article

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24 Nov 2020

Research article | Highlight paper |

| 24 Nov 2020

New flood frequency estimates for the largest river in Norway based on the combination of short and long time series

Kolbjørn Engeland, Anna Aano, Ida Steffensen, Eivind Støren, and Øyvind Paasche

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Final revised paper (published on 24 Nov 2020)
Preprint (discussion started on 10 Jun 2020)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC1: 'Review of paper hess-2020-269', Anonymous Referee #1, 20 Jul 2020
- AC1: 'Interactive comments on "New flood frequency estimates for the largest river in Norway based on the combination of short and long time series" by Kolbjørn Engeland et al.', Kolbjorn Engeland, 28 Aug 2020
RC2: 'Review of Engeland et al.', Daniel Schillereff, 20 Jul 2020
- AC2: 'Interactive comment on “New flood frequency estimates for the largest river in Norway based on the combination of short and long time series” by Kolbjørn Engeland et al.', Kolbjorn Engeland, 28 Aug 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Publish subject to minor revisions (further review by editor) (16 Sep 2020) by Roger Moussa

AR by Kolbjorn Engeland on behalf of the Authors (07 Oct 2020) Author's response Manuscript

ED: Publish as is (13 Oct 2020) by Roger Moussa

AR by Kolbjorn Engeland on behalf of the Authors (14 Oct 2020)

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Short summary

We combine systematic, historical, and paleo information to obtain flood information from the last 10 300 years for the Glomma River in Norway. We identify periods with increased flood activity (4000–2000 years ago and the recent 1000 years) that correspond broadly to periods with low summer temperatures and glacier growth. The design floods in Glomma were more than 20 % higher during the 18th century than today. We suggest that trends in flood variability are linked to snow in late spring.