The relationship between lower-stratospheric ozone at southern high latitudes and sea surface temperature in the East Asian marginal seas in austral spring

Tian, Wenshou; Li, Yuanpu; Xie, Fei; Zhang, Jiankai; Chipperfield, Martyn P.; Feng, Wuhu; Hu, Yongyun; Zhao, Sen; Zhou, Xin; Yang, Yun; Ma, Xuan

doi:https://doi.org/10.5194/acp-17-6705-2017

Articles | Volume 17, issue 11

https://doi.org/10.5194/acp-17-6705-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-17-6705-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 17, issue 11

Research article

|

08 Jun 2017

Research article |

| 08 Jun 2017

The relationship between lower-stratospheric ozone at southern high latitudes and sea surface temperature in the East Asian marginal seas in austral spring

Wenshou Tian, Yuanpu Li, Fei Xie, Jiankai Zhang, Martyn P. Chipperfield, Wuhu Feng, Yongyun Hu, Sen Zhao, Xin Zhou, Yun Yang, and Xuan Ma

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Final revised paper (published on 08 Jun 2017)
Preprint (discussion started on 19 Jan 2017)

Interactive discussion

Status: closed

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

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RC1: 'Review of “the relationship between lower stratospheric ozone in the Southern High Latitude and Sea Surface Temperature in the East Asia Marginal Seas” by Tian et al.', Anonymous Referee #1, 13 Feb 2017
- AC1: 'Response to Referee1', F. Xie, 24 Mar 2017
RC2: 'Review of “The Relationship between Lower Stratospheric Ozone ......” by Tian et al.', Anonymous Referee #2, 17 Feb 2017
- AC2: 'Response to Referee2', F. Xie, 24 Mar 2017

Peer-review completion

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

AR by Fei Xie on behalf of the Authors (24 Mar 2017) Manuscript

ED: Referee Nomination & Report Request started (24 Mar 2017) by Rolf Müller

RR by Anonymous Referee #1 (04 Apr 2017)

Suggestions for revision or reasons for rejection

Review of “The relationship between lower stratospheric ozone in the Southern High Latitudes and sea surface temperature in the East Asian Marginal Seas in austral spring” by Tian et al.

This is the second review of this manuscript. The authors have made significant improvements. I especially appreciated their efforts to include satellite observations into the analysis. This addition indeed strengthen the paper. I have a few minor comments for the authors to consider.

P10 L10-11: please consider reword this sentence.

P10 L13-14: “it is first necessary to confirm the causality of this connection”. I don't see anything in the following text that can confirm the causality.

P12 L3-5: I don't quite follow the logic here. Why wave rays refracting to lower latitudes implies upward propagation?

Fig. 5: Can you compare the teleconnection pattern with the climatology, especially the lower wavenumber components? The interference of the teleconnection pattern and the climatological eddies might explain the connection between the SST over East Asian Marginal Seas and the wave anomalies in the Southern Hemisphere, which remains unclear in the current manuscript. Similar mechanism is used to explained the connection between ENSO and northern polar vortex by Garfinkel and Hartmann (2008).

P12 L21-24: I suggested looking at OLR last time because the authors suggested the anomalous waves are generated from convection, and OLR is an index for convection. I don't think OLR can represent “generated wave activity”. It is not clear to me what Fig. 6 intend to show.

P13 L21-22: I don't see how Figs. 4 and 5 show that warm SST depress planetary wave activity.

P14 L17: It may be clearer to point out that the climatological v* is negative (southward) in the Southern Hemisphere, so that a positive correlation with SST indicates a weakening of the stratopheric circulation associated with SST warming. It is also not clear whether the authors are referring to the negative correlations poleward of 60S or the positive correlation centered at 30S.

P16 L2: “stronger convergence of the EP flux” It should be weaker wave breaking (convergence of EP flux).

P16 L19-21: It seems from Fig. 11 that correlation with v* is opposite below and above 20 hPa, while polar vortex does not show such dependence on height. It also looks quite different from the reanalysis (Fig. 7d). Can you comment on that? Also, since ozone concentration is higher above 20 hPa, I expect that the horizontal transport by v* above 20 hPa is more important than that below 20 hPa. Then we see more southward v* across 60S during the warm events, bringing more ozone from mid-latitues into the polar region, which is opposite to what is stated here.

P38 Table4: Can you also list trends from T2 and T3, separately? This will give readers a sense how large the internal variability may be and how variable the 17% is.

P45 L3: “meridional wind” I thought you are using TEM v*.

P52 Fig. 14: Change the label to “-SST” or reverse the labels on the left y-axis so that negative values are at the top and positive values are at the bottom.

Reference:
Garfinkel, C. I., and D. L. Hartmann, 2008: Different ENSO teleconnections and their effects on the stratospheric polar vortex, JGR, 113, D18114, DOI: 10.1029/2008JD009920.

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RR by Anonymous Referee #2 (05 Apr 2017)

ED: Reconsider after minor revisions (Editor review) (05 Apr 2017) by Rolf Müller

AR by Fei Xie on behalf of the Authors (14 Apr 2017) Author's response Manuscript

ED: Reconsider after minor revisions (Editor review) (25 Apr 2017) by Rolf Müller

AR by Fei Xie on behalf of the Authors (26 Apr 2017) Author's response Manuscript

ED: Publish as is (27 Apr 2017) by Rolf Müller

AR by Fei Xie on behalf of the Authors (28 Apr 2017)

Short summary

Although the principal mechanisms responsible for the formation of the Antarctic ozone hole are well understood, the factors or processes that generate interannual variations in ozone levels in the southern high-latitude stratosphere remain under debate. This study finds that the SST variations across the East Asian marginal seas (5° S–35° N, 100–140° E) could modulate the southern high-latitude stratospheric ozone interannual changes.