General Comments:

This manuscript presents a comprehensive analysis of planetary boundary layer (PBL) dynamics over Hefei, China, based on 3-years of Doppler wind lidar measurements. The study is well-structured and highlights critical aspects of urban PBL, such as low-level jets (LLJs), mixing layer height (MLH), wind shear intensity and turbulence kinetic energy dissipation rates (TKEDR). The use of long-term lidar data provides valuable insights into both scientific understanding and practical applications, including atmospheric modeling and low-altitude economic activities. Overall, the study is well-conducted and contributes to the understanding of urban PBL dynamics. However, the manuscript could benefit from improvements in the depth of analysis and clarity of presentation, as outlined below.

Specific Comments:

1. The key parameters of the lidar are currently provided in the Appendix. It is better to include them in Section 2.1 to improve accessibility for readers.
2. The manuscript references a wide range of studies, but the connections between previous research and the current work are not always explicitly stated. For example, in the discussion of LLJs, more emphasis on their implications for urban pollution or low-altitude economic activities in similar East Asian climates would strengthen the relevance.
3. Figure 5: The wind rose diagrams effectively summarize LLJ characteristics. Including a brief explanation of how these patterns relate to seasonal meteorological phenomena would enhance their interpretability.
4. A figure of 500-hPa geopotential height is included in the Appendix but lacks sufficient explanation. If this figure is essential, consider elaborating on its implications for PBL dynamics and referencing related studies to support the discussion. Otherwise, it may be better to remove the figure to streamline the manuscript.
5. While the manuscript is generally well-written, certain sections and sentences could be simplified to improve readability. Additionally, minor errors should be corrected, such as:

• Line 78: “which the CBL” (Repeated phrase).
• Line 194: Missing space after “0.02 m s-1.”
• Please review for consistency in terminology and formatting throughout the manuscript.

The paper deals with the analyses and exploitations of Doppler lidar measurements for a period of 3 years (2009-2022) in the city of Hefei, China.  The focus is on the study of urban planetary boundary layer (PBL) deriving critical aspects such as low-level jets (LLJs), mixing layer height (MLH), wind shear intensity and turbulence kinetic energy dissipation rates (TKEDR). The study is well-structured, and I really appreciate that the analyses are supported by the data shown. I believe that the present study provides insight into PBL studies and is suitable for its publication in AMT. I agree with the previous referee’s comments and the analysis could be enriched. My suggestion is to add some specific study cases that serve to better illustrate the different situations that affect PBL and the rest of parameters. My only concern is that in the current state the conclusions section is only a summary, I miss the point out what are the novelties of the study, the limitations and the steps for the future. Apart from that, I just detected some typos (i.e. legends axes are sometimes difficult to read, Figure captions can be improved).