We sincerely appreciate the referee for the thorough review and valuable suggestions on our manuscript. These comments are highly constructive and helpful for improving the quality and clarity of our work. We have carefully addressed the comments. The detailed responses are given in the attached file.

Dear Editor,

Thank you very much for your careful check and clear guidance regarding compliance with the GMD Code and Data Policy. We highly appreciate your reminder and have addressed the issue as follows.

Following your request, we have added two days of sample data (including ERA5 and the 3km resolution China regional reanalysis dataset, CMA RRA). The new Zenodo repository is: https://doi.org/10.5281/zenodo.19244294.

We would like to clarify two important constraints regarding the full dataset:

1.    The complete 3km CMA RRA reanalysis dataset (2010–2024) is not yet publicly available under current data management regulations. As stated in the relevant reference, access prior to official release requires application to the CMA Earth System Modeling and Prediction Centre (CEMC).

2.    The full dataset is extremely large: a single time step of the processed data occupies nearly 380 MB, making archiving the entire dataset in public repositories impractical at this stage.

To fully support peer review and reproducibility, we have provided two days of representative sample data in the Zenodo repository for reviewers to test and validate our code and workflow. Upon request from editors or reviewers, we can promptly provide additional data (up to two weeks) via secure, confidential transmission.

The revised code and data availability section reads as follows:

The model code and some sample data are available from https://doi.org/10.5281/zenodo.19244294 Sun (2026). The ERA5 data are publicly available from the Climate Data Store (CDS). The 3km resolution China regional reanalysis data are not yet publicly available under current data management regulations. As stated in Xu et al. (2026), access prior to official release requires application to the CMA Earth System Modeling and Prediction Centre (CEMC).

The manuscript's list of references now includes the following entries (the second is a new addition):

(1) Sun, H.: Downscaling model based on CorrDiff, https://doi.org/10.5281/zenodo.19244294, 2026

(2) Xu, Z. F., J. L. Wang, L. P. Jiang, et al., 2026: CMA regional re-analysis (CMA-RRA): A 3-km resolution, 1-h cycling analysis for China. J. Meteor. Res., 40(x), 1–20,  https://doi.org/10.1007/s13351-026-5285-4.

We sincerely apologize for any inconvenience caused by these data access constraints and greatly appreciate your understanding and flexibility. We are happy to provide further materials or clarifications at any time to meet the journal’s requirements.

Sincerely,

Honglu Sun

We sincerely appreciate the referee for the thorough review and valuable suggestions on our manuscript. These comments are highly constructive and helpful for improving the quality and clarity of our work. We have carefully addressed the comments. The detailed responses are given in the attached file.