Dear authors,

Thank you for the revised version of your manuscript "Optical flow models as an open benchmark for radar-based precipitation nowcasting (rainymotion v0.1)". The reviewers are quite happy with the revisions and have only few minor comments that I would like to ask you to consider before accepting the article for publication in GMD (please see comments below and see also the pdf attached).

Thank you,
Axel Lauer (handling topical editor)

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General comments:

The authors have done a very good and detailed work to address all my previous questions.

I still have one comment about how the text is organized.

The title of Section 2 is "Models" that does not match the content. This is because Section 2 also contains description of the library (Section 2.4) and the verification metrics (Section 2.6). In my opinion, there should be one section devoted to the models, and the above items should be separated from this section. In addition, Sections 3 and 4 are very short. Suggestions for improvement:
- Section 2.4 could be separated into its own main section (e.g. Section 3).
- Sections 2.6 and 3 could be moved into Section 4 that would describe the
experiment setup, the used verification metrics, the data and also the results.
Also change the title accordingly.
- If Section 2.4 is kept as is, Section 2 could be renamed, for instance, as
"Description of the models and the library".

Minor details:
- p.1, lines 22-23: Can you add a reference which states that radar-based
nowcasting outperforms NWP at short lead times?
- p. 4, l. 15: More detailed explanation could be added here. Eigenvalues of what?
Are the eigenvalues computed by using single pixels or a neighborhood around
each pixel?

Supplementary material:

S5: It is mentioned that "Results show that the DIS optical flow technique outperforms the remaining optical flow techniques while also providing the fastest computation.". However, I could not find any graph or table showing the computation times of different optical flow methods. Can you add this information?