Comparison of single-Doppler and multiple-Doppler wind retrievals in Hurricane Matthew (2016)

Cha, Ting-Yu; Bell, Michael M.

doi:https://doi.org/10.5194/amt-14-3523-2021

Articles | Volume 14, issue 5

https://doi.org/10.5194/amt-14-3523-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-14-3523-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 14, issue 5

Research article

|

18 May 2021

Research article |

| 18 May 2021

Comparison of single-Doppler and multiple-Doppler wind retrievals in Hurricane Matthew (2016)

Ting-Yu Cha and Michael M. Bell

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Final revised paper (published on 18 May 2021)
Preprint (discussion started on 22 Jul 2020)

Interactive discussion

Status: closed

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

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RC1: 'the review is attached as pdf', Anonymous Referee #1, 19 Sep 2020
- AC4: 'Reply on RC1', Ting-Yu Cha, 08 Jan 2021
RC2: 'Review of Comparison of Single Doppler and Multiple Doppler Wind Retrievals in Hurricane Matthew (2016)', Anonymous Referee #2, 30 Nov 2020
- AC2: 'Reply on RC2', Ting-Yu Cha, 08 Jan 2021
RC3: 'Review of "Comparison of Single Doppler and Multiple DopplerWind Retrievals in Hurricane Matthew (2016)"', Anonymous Referee #3, 10 Dec 2020
- AC3: 'Reply on RC3', Ting-Yu Cha, 08 Jan 2021
AC1: 'Reply on RC1', Ting-Yu Cha, 08 Jan 2021

Peer-review completion

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

AR by Ting-Yu Cha on behalf of the Authors (10 Jan 2021) Author's response Manuscript

ED: Referee Nomination & Report Request started (21 Jan 2021) by S. Joseph Munchak

RR by Anonymous Referee #3 (30 Jan 2021)

Suggestions for revision or reasons for rejection

Review of "Comparison of Single Doppler and Multiple Doppler Wind Retrievals in Hurricane Matthew (2016)"

General comments:
I thank the authors for their thoughtful replies and careful revisions to their manuscript. The authors have addressed most of my comments adequately. I have comments on Eq. 20 that is newly derived in the revised manuscript.

Specific comments:
L202: This is a comment. Eq. 20 describes that the GVTD technique cannot derive the axisymmetric radial wind at R=RT because of the singular point. This is one of the limitations in the GVTD technique, which is not described in Jou et al. (2008).
L356: When the single Doppler analysis is used, is your reply “the retrievals of A2, A3 are variable due to the propagation of wavenumber 2 winds” correct? As shown in Fig. 7b, the GVTD technique using the harmonic 2 and 3 components from the single Doppler analysis can retrieve wavenumber 2 tangential wind reasonably, which is consistent with linear vortex Rossby wave theory. The authors hypothesize in the next paragraph that the discrepancies of retrieved wavenumber 1 and 2 tangential winds are attributed to the dual Doppler wind synthesis. Thus, I think the GVTD technique can also retrieve the axisymmetric radial wind from the single Doppler analysis and it can be validated by using the wavenumber 0 radial wind retrieved by the dual Doppler analysis, which is reliable. However, I do not mean that the authors should do that in this study. I mean, the authors should describe that it is possible but that it is future work. As I wrote in the previous comment, information on the axisymmetric radial wind can be very useful for monitoring and predicting tropical cyclones.

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RR by Anonymous Referee #1 (06 Mar 2021)

ED: Publish subject to minor revisions (review by editor) (09 Mar 2021) by S. Joseph Munchak

AR by Ting-Yu Cha on behalf of the Authors (19 Mar 2021) Author's response Author's tracked changes Manuscript

ED: Publish as is (02 Apr 2021) by S. Joseph Munchak

AR by Ting-Yu Cha on behalf of the Authors (05 Apr 2021) Manuscript

Short summary

Doppler radar provides high-resolution wind measurements within tropical cyclones (TCs) for real-time monitoring and weather forecasting. Hurricane Matthew (2016) was observed by the ground-based single-Doppler and NOAA P-3 Hurricane Hunter airborne radar simultaneously, providing a novel opportunity to compare single- and multiple-Doppler wind retrieval techniques. Here, we improve the single-Doppler wind retrieval algorithm and show the pros and cons of each method for studying TC structure.