Changing seasonality of the Baltic Sea

Kahru, Mati; Elmgren, Ragnar; Savchuk, Oleg P.

doi:https://doi.org/10.5194/bg-13-1009-2016

Articles | Volume 13, issue 4

https://doi.org/10.5194/bg-13-1009-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Effects of rising CO₂ on a Baltic Sea plankton...

https://doi.org/10.5194/bg-13-1009-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 13, issue 4

Research article

|

23 Feb 2016

Research article |

| 23 Feb 2016

Changing seasonality of the Baltic Sea

Mati Kahru, Ragnar Elmgren, and Oleg P. Savchuk

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Final revised paper (published on 23 Feb 2016)
Preprint (discussion started on 25 Nov 2015)

Interactive discussion

Status: closed

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

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- Supplement

RC C8075: 'Review by H. Paerl', Hans Pearl, 28 Nov 2015
- AC C8088: 'review by H. Paerl', Mati Kahru, 30 Nov 2015
RC C8292: 'Publication of manuscript', Hans Pearl, 06 Dec 2015
RC C8624: 'Discussion of Kahru et al', R. Stumpf, 21 Dec 2015
- AC C8689: 'Comments by R. Stumpf', Mati Kahru, 25 Dec 2015

Peer-review completion

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

ED: Publish subject to minor revisions (Editor review) (25 Jan 2016) by Kai G. Schulz

AR by Mati Kahru on behalf of the Authors (25 Jan 2016) Author's response Manuscript

ED: Publish as is (29 Jan 2016) by Kai G. Schulz

AR by Mati Kahru on behalf of the Authors (05 Feb 2016) Author's response Manuscript

Short summary

Using satellite-derived data sets we have found drastic changes in the timing of the annual cycle in physical and ecological variables of the Baltic Sea over the last 30 years. The summer season starts earlier and extends longer. The period with sea-surface temperature of at least 17 ˚C has doubled; the period with high water turbidity has quadrupled. While both the phytoplankton spring and summer blooms have become earlier, the annual maximum has switched to the summer cyanobacteria bloom.