Impact of decadal reversals of the north Ionian circulation on phytoplankton phenology

Lavigne, Héloise; Civitarese, Giuseppe; Gačić, Miroslav; D'Ortenzio, Fabrizio

doi:https://doi.org/10.5194/bg-15-4431-2018

Articles | Volume 15, issue 14

https://doi.org/10.5194/bg-15-4431-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-15-4431-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 15, issue 14

Research article

|

19 Jul 2018

Research article |

| 19 Jul 2018

Impact of decadal reversals of the north Ionian circulation on phytoplankton phenology

Héloise Lavigne, Giuseppe Civitarese, Miroslav Gačić, and Fabrizio D'Ortenzio

Download

Final revised paper (published on 19 Jul 2018)
Preprint (discussion started on 18 Dec 2017)

Interactive discussion

Status: closed

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

- Printer-friendly version

- Supplement

RC1: 'Review of: Impact of decadal reversals of the North Ionian circulation on phytoplankton phenology by Lavigne, H., G. Civitarese, M. Gacic and F. D’Ortenzio Manuscript ID: BG 2017 494', Anonymous Referee #1, 22 Feb 2018
- AC1: 'response to review #1', LAVIGNE HELOISE, 25 Mar 2018
RC2: 'Review of bg-2017-494', Anonymous Referee #2, 26 Feb 2018
- AC2: 'responses to review#2', LAVIGNE HELOISE, 25 Mar 2018

Peer-review completion

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

ED: Reconsider after major revisions (04 Apr 2018) by Marilaure Grégoire

AR by LAVIGNE Héloïse on behalf of the Authors (22 Apr 2018) Author's response Manuscript

ED: Referee Nomination & Report Request started (24 Apr 2018) by Marilaure Grégoire

RR by Anonymous Referee #1 (08 May 2018)

Suggestions for revision or reasons for rejection

Second submission review of:

Impact of decadal reversals of the North Ionian circulation on phytoplankton phenology

by Lavigne, H., G. Civitarese, M. Gacic and F. D’Ortenzio

Manuscript ID: BG 2017 494

General comments

I recommend publication, after the minor corrections reported below. There is no need for me to review the paper again if the corrections are made; however I am willing to eventually do so, if the Editor desires so.

Form

The English of the manuscript is now correct. I do have some further suggestions, coming from my reading the revised paper: see below.

Particular comments and suggested text corrections

Abstract

Page 1

Line 20. "gyre, bloom onset occurred" -> "gyre, the bloom started".
Line 29. "peak of chlorophyll" -> "chlorophyll peak".

1 Introduction

Page 2
Line 10. "Mixed Layer Depth (MLD)" -> "The Mixed Layer Depth (MLD)".
Line 24. "the formation of cyclonic eddies cause" -> " the formation of cyclonic eddies causes".
Line 30. "long lifetime" -> " long-lived".
Line 31. "superior" -> "greater than".

2 Data and Methods

2.1 Satellite and modelling data

Page 4
Line 9. "8-day average". -> "the 8-day average".
Line 15. "as well as the OC4 global algorithm" -> "as for OC4 ".
Line 17. "As the present study focus" -> "As the present study focuses". Or "focusses", if British English is needed.
Line 18. "utilisation of global" -> "utilisation of the global".
Line 30. "(ECMFW)" -> "(ECMWF)".
Line 31. "Data was available" -> "Data were available"

2.2 In-situ data

Page 5
Line 5. "isopycnal 28.9 kg m-3" -> "28.9 kg m-3 isopycnal" (correct twice in line)
Line 25. "nitrate dynamic" -> "nitrate dynamics"
Line 25. "as the both elements co-varies" -> "since both nutrients co-vary"
Line 25. "and as the quality" -> "since the quality"

2.3 Phenological metrics

Page 6
Line 4. "in the Mediterranean Sea trophic situation" -> "the Mediterranean Sea trophic situation".
Line 6. "initiation" -> "onset".
Line 7. "determine bloom onset date" -> " determine the bloom onset date".

3 Results and Discussion
3.1 Physical and chemical characterization of the NIG

Line 15. "differencebetween" -> "difference between"
Line 21. "Although, the ICI" -> "Although the ICI": eliminate comma.
Line 22.
Line 22. "it is affected by seasonal signal" -> "the differences with respect to the yearly means suggest that it is affected by a seasonal signal". (suggested correction)
Line 27-28 "(see Figure 2c)" -> "(Figure 2c)". No need for "see". Usually one should use "see" only to suggest consultation of "remote" figures w/respect to the text (e.g. in the Introduction: "see Fig. 4 below").

Page 7

Line 3. "beattributed" -> "be attributed".
Line 16. "Haine 2010" -> "Haine, 2010"
Line 19. "Data used here" -> "The data used here"
Line 20. "during which water column" -> "during which the water column"
Same. "reaches nitracline depth" -> "reaches the nitracline depth"
Line 21. "Applying" -> "By applying"
Line 25. "nutrientsto" -> "nutrients to"

3.2 General patterns of phytoplankton phenology in the Ionian Sea

Line 33. "then," -> eliminate comma

Page 8
Line 2. "(see Figure 5)" -> "(Figure 5)"

3.3 Impact of the NIG circulation on the [Chl-a] phenology

Line 15. "negative anomalies" -> more simply: " negative anomalies (Fig. 5c)". Cite figures.
Line 16. "panels" -> "Figure 5".
Line 30. "end of January" -> "end of January (Figure 6, right panel)"
Line 31. "D uring" -> "During" and "the cyclonic regime," -> "the cyclonic regime (Figure 6, left panel)"
Line 33. "The annual maximum growth rate..." -> cite Figure 7 here?

Page 9

Line 1. "in average" -> "on average"

3.4 Role of the NIG circulation patterns compared to the interannual variability in MLD (focus on the region S3)

Line 14. "on the area S3" -> "on the S3 area"
Line 20. "as earlier as" -> "as early as"
Line 21. "weak:-24%" -> "weak: -24%" insert space after column.
Line 21-22. "(see Table 1)" -> "(Table 1)".

Page 10

Line 17. "Trades' " -> "the Trades' "
Line 23. "very small" -> "very low"
Line 28. "such supply" -> " such a supply"
Line 30. "estimated" -> "the estimated"

Page 11

Line 2. "reached almost" -> "almost reached"
Line 4. "a entrainment" -> "an entrainment"
Line 25. "masksthe" -> "masks the"

4 Summary and Conclusion -> 4 Summary and Conclusions (CORRECT THIS unless the journal wants "Conclusion")

Line 28. "of spring bloom" -> "of a spring bloom".

Page 12

Lines 2-3. "in case of anticyclonic circulation" -> "in the anticyclonic case"
Line 12. "high dense" -> "high-density" or "very dense"
Line 22. "DhyanAranha" -> "Dhyan Aranha" (two words, I guess?)
Line 25. "Equipementd’Avenir" -> " Equipement d’Avenir "
Line 27. "are thanks" -> "are thanked"

Figures and captions

Fig. 3 a, b color palette: units are missing. I suppose they are meters? Maybe add in caption or put an "m" near the palette.
Figure 6 caption. "regimesaveraged in the region S3" -> "regimes averaged in region S3"

Hide

RR by Anonymous Referee #2 (09 May 2018)

ED: Publish subject to minor revisions (review by editor) (13 Jun 2018) by Marilaure Grégoire

AR by LAVIGNE Héloïse on behalf of the Authors (20 Jun 2018) Author's response Manuscript

ED: Publish as is (22 Jun 2018) by Marilaure Grégoire

AR by LAVIGNE Héloïse on behalf of the Authors (30 Jun 2018)

Short summary

The north Ionian circulation, which is characterized by a decadal alternation of cyclonic and anticyclonic regime, affects phytoplankton dynamics and surface chlorophyll a. From satellite ocean color data, the cyclonic and anticyclonic regimes are compared and two chlorophyll a dynamics are observed: when circulation is anticyclonic, bloom initiation is in December and chlorophyll is low in March, whereas during the cyclonic regime, a late chlorophyll peak is commonly observed in March.