Vertical resolution dependence of gravity wave momentum flux simulated by an atmospheric general circulation model

Watanabe, S.; Sato, K.; Kawatani, Y.; Takahashi, M.

doi:https://doi.org/10.5194/gmd-8-1637-2015

Articles | Volume 8, issue 6

https://doi.org/10.5194/gmd-8-1637-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/gmd-8-1637-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 8, issue 6

Development and technical paper

|

02 Jun 2015

Development and technical paper |

| 02 Jun 2015

Vertical resolution dependence of gravity wave momentum flux simulated by an atmospheric general circulation model

S. Watanabe, K. Sato, Y. Kawatani, and M. Takahashi

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Final revised paper (published on 02 Jun 2015)
Preprint (discussion started on 12 Nov 2014)

Interactive discussion

Status: closed

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

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RC C2659: 'Review of 'Vertical resolution dependence of gravity wave momentum flux simulated by an atmospheric general circulation model' by S Watanabe and co-authors.', Anonymous Referee #1, 15 Dec 2014
- AC C3440: 'Response to the referee's comment', Shingo Watanabe, 27 Feb 2015
RC C2907: 'Review of “Vertical resolution dependence of gravity wave momentum flux simulated by an atmospheric general circulation model” by Watanabe et al.', Anonymous Referee #2, 09 Jan 2015
- AC C3441: 'Response to the referee's comment', Shingo Watanabe, 27 Feb 2015

Peer-review completion

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

AR by Shingo Watanabe on behalf of the Authors (27 Feb 2015)

ED: Reconsider after major revisions (02 Mar 2015) by Olivier Marti

ED: Referee Nomination & Report Request started (09 Mar 2015) by Olivier Marti

RR by Anonymous Referee #2 (10 Mar 2015)

RR by Anonymous Referee #1 (25 Mar 2015)

Suggestions for revision or reasons for rejection

Second review for 'Vertical resolution dependence of gravity wave momentum
flux simulated by an atmospheric general circulation model'
by S Watanabe and co-authors.

The authors have addressed my concerns, and the addition of several subsections
to discuss orographic waves and the latitudinal dependence of GWMF is
very beneficial to the paper. I believe this makes the paper more complete
and it now fully serves its role as a stimulating, concise paper describing
an important and rather counter-intuitive result. I recommend publication,
with very minor modifications.

Minor Points
For the figures: the vertical axis is generally pressure; for future
publications, I would advise that the authors think of presenting
altitude as the vertical axis. The difference between the wavelengths
at different resolutions will probably be more apparent, and the extent
of the atmospheric layers where significant differences arise will
also appear clearer. For the present publication, it is fine
to keep the figures as they are. I very much appreciated figure 5.

p7 lines 18-20: rather than refer to details that are 'really hard to
see' in the figure, please describe and explain, and indicate that the evidence
for this is 'not shown'. In the present case, the evidence shown rather
suggests that the parameterized turbulent mixing is not the more important
process, but this is speculative.

p8, line 1: 'below about 30 hPa': do the authors mean 'above about 30 hPa'?

p8, lines 5-6: the formulation 'not allowed to be shortened beyond
the 2 km 5 limit' is confusing, please rephrase.

caption of Figure 2: the authors do not refer explicitly to panels c and d.

In the introduction or discussion, it may be useful to include a reference
to the study of Lane and Knievel (2005), which revealed that the behavior
of gravity waves as resolution is increased is not a straightforward
monotonic behavior. The scales considered were not the same of course, but
this publication serves as a useful cautionnary note to remind us that
the behavior of GW may be complex as resolution is increased, with the
interaction with the background flow (trapping in their case) playing an
important role.

T.P. Lane and J.C. Knievel,
Some effects of model resolution on simulated gravity waves generated by deep, mesoscale convection, J. Atmos. Sci., 2005, 62, p3408-3419.

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ED: Publish subject to minor revisions (Editor review) (14 Apr 2015) by Olivier Marti

AR by Shingo Watanabe on behalf of the Authors (24 Apr 2015) Author's response Manuscript

ED: Publish as is (11 May 2015) by Olivier Marti

AR by Shingo Watanabe on behalf of the Authors (13 May 2015)