Virtual radar ice buoys – a method for measuring fine-scale  sea ice drift

Karvonen, J.

doi:https://doi.org/10.5194/tc-10-29-2016

Articles | Volume 10, issue 1

https://doi.org/10.5194/tc-10-29-2016

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

https://doi.org/10.5194/tc-10-29-2016

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

Articles | Volume 10, issue 1

Research article

|

15 Jan 2016

Research article |

| 15 Jan 2016

Virtual radar ice buoys – a method for measuring fine-scale sea ice drift

J. Karvonen

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Final revised paper (published on 15 Jan 2016)
Preprint (discussion started on 08 Sep 2015)

Interactive discussion

Status: closed

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

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- Supplement

SC C1793: 'review of Virtual Radar Ice Buoys - A Method for Measuring Fine-Scale Dynamic Properties of Sea Ice J. A. Karvonen', J. Weiss, 06 Oct 2015
- AC C1814: 'Short reply to Dr. Weiss', Juha Karvonen, 08 Oct 2015
- AC C2012: 'Response to comments by pfof. Weiss', Juha Karvonen, 29 Oct 2015
RC C1839: 'Review of Virtual radar ice buoys – a method for measuring fine-scale dynamic properties of sea ice, J. Karvonen, 2015', Andrew Mahoney, 08 Oct 2015
- AC C2016: 'Response for reviewer 1 comments', Juha Karvonen, 29 Oct 2015
RC C1845: 'Review of “Virtual radar ice buoys – a method for measuring fine-scale dynamic properties of sea ice” by J. Karvonen', Anonymous Referee #2, 09 Oct 2015
- AC C2022: 'Response for reviewer 2 comments', Juha Karvonen, 29 Oct 2015

Peer-review completion

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

AR by Anna Wenzel on behalf of the Authors (05 Nov 2015) Author's response

ED: Referee Nomination & Report Request started (18 Nov 2015) by Christian Haas

RR by Anonymous Referee #2 (04 Dec 2015)

Suggestions for revision or reasons for rejection

I think overall most of my comments were carefully considered and the quality of the paper was much improved. The manuscript has become readable and shows the scientifically new findings. Now I feel that the manuscript has become acceptable for the publication in The Cryosphere. I hope the technique developed by this paper will be applied to improve our understanding of the sea ice behavior on a sub-grid scale. I acknowledge the author for all his efforts made for revising the paper.

My suggestions (mostly technical) are below:
*(P4L10) “moving of deforming” might be “moving or deforming”?
*(P6L10) “hare” should be “here”.
*(P6L22) Could you add some explanation about what “radar artifacts” is?
*(P7L26) “close” might be “compact”?
*(P11 Eq.5) What does “T” stand for?
*(P11L4-6) If possible, some additional explanation would be helpful to understand this.
*(P11L19) What does “Rb” stand for?
*(P12L1) “we performed one tracking iteration” might be, for example, “we repeated the tracking of individual VB’s using successive images to trace their positions for the observation period.”
*(P16L27) “a” should be italic.
*(P19 section 6.2) The author did not take the ship motion into account. However, I wonder if it was not possible to obtain the ship velocity just by using the onboard GPS record.
*(P20L14) “a a study” should be “ a study”.
*(P20L26) “error due to the internal deformation within the VB area.”
Although this is just my opinion, we do not call this “error”. I prefer “reduction in ice area due to the internal deformation within the VB area”.
*(P21L25) “of the time (?)”. Please remove “(?)”.
*(P23L2) “ A n” should be “an”.

Faithfully yours

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ED: Publish subject to technical corrections (12 Dec 2015) by Christian Haas

AR by Juha Karvonen on behalf of the Authors (14 Dec 2015) Author's response Manuscript

Short summary

We present an algorithm for continuous ice drift estimation based on coastal and ship radar data. The ice dynamics are estimated based on automatically selected ice targets (virtual buoys, VBs) and an optical flow algorithm. VBs are added when necessary. We show some examples of the tracking and quantities derived from the VB motion.