The manuscript presents a comprehensive study on atmospheric aerosols in the Tibetan Plateau (TP). The paper details the collection and analysis of aerosol data from multiple sites across TP, emphasizing the physicochemical and optical properties of aerosols. It discusses the impacts of these aerosols on regional climate, ecological balance, and hydrological cycles, highlighting the significance of this research in understanding aerosol behavior in high-altitude areas. The paper is well-structured and presents complex scientific data in an accessible manner. In conclusion, the manuscript is a significant contribution to atmospheric science, particularly in understanding aerosols' role in climatic effect on the Tibetan Plateau. With minor enhancements, it would be a valuable addition to the Journal of Earth Science System Data.

General comments:

1. The manuscript's primary concern at present is its language. Engaging a native English speaker to thoroughly refine and enhance the language used throughout the document would be highly beneficial.
2. The methodology for collecting and analyzing the aerosol data appears robust and thorough. The use of high-resolution instruments and multiple sites enhances the study's reliability. However, it would be beneficial to discuss any limitations or potential biases in the data collection process.

Minor comments:

1. Line 34: "...ecological, environmental security, and the hydrological cycle."
2. Line 48: "...particle light absorption from different carbonaceous substances such as black carbon and brown carbon..."
3. Line 62: "The Tibetan Plateau (TP), with a mean altitude of over 4000 m a.s.l..."
4. Line 75: "As the most complex and important components in the atmosphere, atmospheric aerosols..."
5. Line 110: "...aerosol physical, chemical, and optical properties..."
6. Line 170: "Continuous observations of atmospheric aerosol chemistry have been conducted..."
7. Line 193: "Motuo County, located in the lower reaches of the Yarlung Tsangpo River and the southern..."
8. Line 265: "Online-based observations of atmospheric aerosols were carried out..."
9. Line 866: "...the data reveal seasonal variations in aerosol properties."
10. Line 853:  "...which will contribute to our understanding of aerosol-climate interactions."
11. Line 812: "This study represents a stepping stone towards detailed aerosol characterization."
12. Line 887: "Acknowledgments: We extend our thanks to the various teams and individuals..."
13. Figure 2: Are the concentrations of PM1 at each site converted to standard conditions?
14. Figure 4: The color of each line is easy to confused with the component of AMS species in the manuscript. It is better to change them to another group of colors. In addition, the diurnal variation of Namco is shift with other lines.
15. Figure 6: Although there are distinct contributions of MO-OOA and LO-OOA at different site, these two components at different sites could be different with each other as illustrated with their different O/C ratio. How can these species be compared among them? Is there any suggestion for this kind of comparison?

This manuscript offers a comprehensive examination of the physicochemical and optical properties of atmospheric aerosols over the Tibetan Plateau (TP), employing a broad array of high-resolution, real-time measurements across several key locations. It ambitiously spans a significant and topographically complex area vital for regional and global climate understanding, a region notably under-studied due to logistical and environmental hurdles. The resulting data aims to significantly refine aerosol radiative forcing estimations in climate models for the TP area.

The authors have detailed their methods, from deploying advanced instruments to applying sophisticated data analysis techniques, offering a rich analysis of aerosol dynamics across various TP climates and environments. Moreover, the study explores the broader implications of these findings on climate modeling and potential impacts on the environment.

Despite the manuscript's comprehensive approach and its potential significant impact, areas requiring further clarification or detail could enhance its scientific contribution before it can be accepted.

The following are specific comments and suggestions for the authors:

• The limited coverage of seasonal variability due to short-term observations raises questions about the generalizability of the findings across the TP's complex climate system, influenced by monsoonal patterns. This should be clear in this manuscript.
• Mention of the Positive Matrix Factorization (PMF) and HYSPLIT models lacks a detailed rationale for their selection and configuration. An elaboration on the decision-making process and any comparative analysis with alternatives would be beneficial.
• The manuscript touches on regional variations but falls short of quantitatively attributing aerosol concentrations to specific sources. Could additional data or analytical methods improve direct source apportionment?
• The research's potential to enhance climate model predictions is intriguing. A more detailed discussion on integrating these findings into existing climate models, specifically which model parameters or processes this dataset could refine, would be valuable.
• The inherent limitations and uncertainties of observational studies, especially in challenging environments like the TP, warrant a more detailed discussion. The manuscript would benefit from addressing the spatial and temporal data coverage limitations and their potential impact on the study's conclusions.
• Finally, the entire text requires further revision for English expression by a native English speaker.