please see pdf

General Comments:

This overview of the YOPPsiteMIP project demonstrates the project’s value in comparing model output with observations and diagnosing the shortcomings based on the governing equations, heat fluxes for example. The focus is on polar regions that have received less modeling attention than other latitudes. A lot of site-specific information is needed to interpret the results; is this provided in Meta data? This clearly is a major undertaking that has high scientific merit.

I have three questions that should help to further clarify the status of YOPPsiteMIP.

1. The MODFs are finished for ~50% of Arctic sites and 0% of Antarctic sites (Fig. 1). Why is this?
2. How challenging is it to transform the observations and model output into MODFs and MMDFs?
3. Very high time frequency results are included in MODFs and MMDFs. What is the application of this capability?

Specific Comments:

1. Line 55: Need Jung and Matsueda (2014) in reference list.
2. Lines 74-75: Need details of Gallagher et al. (in prep.) in reference list.
3. Line 173: Correct to “observatories”. Also line 241.
4. Line 181: 2028-06-06?
5. Page 10: Tolstykh et al. (2017) is not in list of references.
6. Page 11: Under Convection: Kain and Fritsch (1990) is missing from the list of references. Under Microphysics: Correct to Seity et al. (2012).
7. Page 12: Bastak-Duran et al. (2014) is missing from the list of references.
8. Line 375: What does conditional mean?
9. Line 412: word(s) missing after “closely”.
10. Line 471: “Evaluation”.
11. Lines 509-510: Positive wind speed bias is seen at Sodankyla for all the models but z_0m is reasonable for the other models, so the situation is more complicated than discussed.
12. Line 532: “The basic shape of the observed points is the same at both sites”. Not true from my perspective.
13. Line 546: Correct “are” to “is”.
14. Lines 664-669: Discriminate between the three Akish and Morris (2023) references.
15. Lines 706-716: Reposition these references and eliminate duplicates.
16. Lines 743, 803, 812, 849, 892, 910, 956: References used?
17. Lines 808-811: Discriminate between the two Huang et al. (2023) references. Move Iacono et al. to correct location.
18. Line 908: Move Seifert reference to correct location.
19. Lines 945-946: Cox reference is incomplete.