This paper comprehensively investigates the impact of irrigation on land-atmosphere coupling using the Noah LSM, which has great scientific significance. It focuses specifically on the impact of various satellite-based irrigation products on LA coupling, and the influence of different spatial resolutions on these effects. This paper also explored the “scale effect” across multiple spatial resolutions through ground-based observations and model simulations. However, in the current version, major revisions still need to be made to the structure of the paper, and the quality of the figures also needs improvement. Here are my suggestions:

1. “Irrigation threshold” is a critical parameter that affects the irrigation timing and amount in the model simulations. However, it seems that there is no detailed discussion of this threshold in the paper. I suggest that the author provide a detailed explanation of this threshold and supplement some sensitivity analyses of the threshold selection on the results.

2. The second section (Background) and Introduction contain duplicated information. I suggest merging them to streamline this section. The current version makes it difficult for readers to capture the key messages. In addition, the description of the observation data in the paper is too brief. Due to the ground-based observations are crucial for the validation of the simulations, the authors should strengthen this part.

3. The definition of “transition region” needs to be highlighted in the Method section.

Minor comments:

Line 24-26: Please provide specific quantitative information instead of qualitative expressions.

Line 28: Please provide the full name when PBL first appears.

Line 33-34: This sentence is exactly the same as the abstract, please rephrase.

Line 60: More references.

Line 68: “L-A” has already been abbreviated before, so it is not necessary to provide the full name here.

Line 72: What does “Irrigation Dataset” specifically refer to? Is it the irrigation fraction map or the irrigation water use map?

Line 159: Why not use satellite-based LAI?

Line 165: When considering irrigation as a special form of precipitation in the model, have the effects of canopy interception been taken into account? Large and lush leaves often result in more actual water consumption for irrigation, and has the cooling effect caused by the interception evaporation been calculated in the model?

Line 258-260: Can the changes in EF be quantified specifically? This can help compare the changes in EF caused by different irrigation fraction products and the results caused by different resolutions.

Line 308: It is necessary to emphasize why similar data analysis needs to be conducted on individual stations.

Figure 2: A legend should be provided to explain the meaning of different colors and numbers, rather than just describe them in the figure caption.

Figure 6: The proportion of text and numbers in Figure 6 and subsequent figures doesn’t look very good, and the font size is too small to read clearly. Also, the unit of the Y-axis can be converted to MJ or displayed using scientific notation.

Figure 7: The two sub-figures in Figure 7 need to be rearranged horizontally instead of vertically.