SEAS5: the new ECMWF seasonal forecast system

Johnson, Stephanie J.; Stockdale, Timothy N.; Ferranti, Laura; Balmaseda, Magdalena A.; Molteni, Franco; Magnusson, Linus; Tietsche, Steffen; Decremer, Damien; Weisheimer, Antje; Balsamo, Gianpaolo; Keeley, Sarah P. E.; Mogensen, Kristian; Zuo, Hao; Monge-Sanz, Beatriz M.

doi:https://doi.org/10.5194/gmd-12-1087-2019

Articles | Volume 12, issue 3

https://doi.org/10.5194/gmd-12-1087-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-12-1087-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 12, issue 3

Model description paper

|

22 Mar 2019

Model description paper |

| 22 Mar 2019

SEAS5: the new ECMWF seasonal forecast system

Stephanie J. Johnson, Timothy N. Stockdale, Laura Ferranti, Magdalena A. Balmaseda, Franco Molteni, Linus Magnusson, Steffen Tietsche, Damien Decremer, Antje Weisheimer, Gianpaolo Balsamo, Sarah P. E. Keeley, Kristian Mogensen, Hao Zuo, and Beatriz M. Monge-Sanz

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Final revised paper (published on 22 Mar 2019)
Preprint (discussion started on 01 Oct 2018)

Interactive discussion

Status: closed

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

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RC1: 'Review', Anonymous Referee #1, 30 Oct 2018
RC2: 'Referee comments', Anonymous Referee #2, 09 Nov 2018
AC1: 'Author response to reviews: Part 1 - Response.', Stephanie Johnson, 18 Dec 2018
AC2: 'Author response to reviews: Part 2 - Article differences', Stephanie Johnson, 18 Dec 2018

Peer-review completion

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

AR by Anna Wenzel on behalf of the Authors (19 Dec 2018) Author's response

ED: Publish subject to technical corrections (04 Jan 2019) by Sophie Valcke

AR by Stephanie Johnson on behalf of the Authors (28 Jan 2019) Author's response Manuscript

Short summary

In this article, we describe the new ECMWF seasonal forecast system, SEAS5, which replaced its predecessor in November 2017. We describe the forecast methodology used in SEAS5 and compare results from SEAS5 to results from the previous seasonal forecast system, highlighting the strengths and weaknesses of SEAS5. SEAS5 data are publicly available through the Copernicus Climate Change Service's multi-system seasonal forecast.