Using a Digital Twin to Study the Influence of Climatic Changes on High Ozone Levels in Bulgaria and Europe
Round 1
Reviewer 1 Report
Comments for author File: 
Comments.pdf
Author Response
Dear Reviewer, Please find our answers to your review!
Author Response File: 
Author Response.docx
Reviewer 2 Report
The manuscript proposes an integrated study for the study of the Influence of Climatic Changes on High Ozone Levels by making use of DT techmologies and models.
The content of the document is interesting but it must be revised to improve readability.
The method defined, the models adopted, together with their application and the related impact analysis are well explained.
The study performed by the authors is relevant, interesting and, in general, the effort made is really appreciated.
Some comments are reported hereafter.
To be honest, I do not understand the meaning of the bold used many times in the manuscript. My understanding of the bold is to focus the attention of the reader in particular concepts, that are expanded in the near sentences. Please, reduce drastically the use of the bold.
You write in the intro: "... we shall apply a Digital Twin, which we shall call DIGITAL AIR." Shall call? Is "DIGITAL AIR" the proper name of the tool or not? So, make it clear.
Please, review the conclusions avoiding to use sub-sections. Sub-section of ten lines does not make sense. Instead, improve the manuscript readability and comprension with an organic description of the work and introduce the future activities (which are missing).
Citation: citation in the text does not respect the reference order, please check;
A clear description of the computatinal resources used to test the model is missing.
When reporting an activity centered to keyword such ad digital twins and computing simulation, in fact, it became important to present and describe the computing resources, the relevant services and the time needed to obtain a results.
As an example, a growing number of such activities is making use of computing services, mainly in cloud, made available within funded projects.
Another important point missing is the collaboration with those projects, mostly EU financed, and groups working on DT models.
In addition to the models and methods adopted for the different usecase, in fact, the platforms where to perform calculations and analysis for TD models are becoming equally important.
In such respect, to complete the information provided by the manuscript, a reference to some collaborations and EU funded projects running to date must be added.
Among those projects, the IOTWINS project (https://cordis.europa.eu/project/id/857191/reporting) is aimed to provide cloud-based tools and services for (but not limeted to) the hybrid digital twins.
In particular, the project designed a cloud-based platform services that can be exported and implemented by other computing models and is supported by different public and private entities that provide different use cases focused to address specific real-life problems.
More information is described in the following recent publication that should be properly cited in the conclusions to enrich the future prospects (that at the moment are missing).
Costantini, A.; Di Modica, G.; Ahouangonou, J.C.; Duma, D.C.; Martelli, B.; Galletti, M.; Antonacci, M.; Nehls, D.; Bellavista, P.; Delamarre, C.; Cesini, D.
IoTwins: Toward Implementation of Distributed Digital Twins in Industry 4.0 Settings. Computers 2022, 11, 67. https://doi.org/10.3390/computers11050067
Author Response
Dear Reviewer, Please find our answers to your review.
Author Response File: Author Response.pdf
Round 2
Reviewer 2 Report
The manuscript have been improved in readability and content.
Still persist some text il bold, but it is related to highlight concept.
Please, make a spell check covering all the manuscript as it seems that there are some erros and spurios bold left.
As an example:
- Introduction
bold: The solution of (3) is used as initial condition of (4) and the solution of (4)
-5 Influence of the climatic changes on pollution levels in Bulgaria
format: "DIGITAL AIRin" should be "DIGITAL AIR in"
-6 Discussion and concluding remarks
format: "DIGITAL AIRand" should be "DIGITAL AIR and"
-6.1 The bad days
bold: (a), (c)
- 6.3 The climetic scenarios
bold: (a), (b), (c)
format: "DIGITAL AIRand" should be "DIGITAL AIR and"
-6.4 Conclusions
bold: (b), (c), (d)
Author Response
Dear Reviewer,
Thank you very much for your careful reading the revised version of our paper. I am grateful to you!
The second revised version is uploaded and the needed corrections are done.
Best regards,
Ivan Dimov
