the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
| 24 Jun 2025
In-situ aerosol measurements at the Arctic Sammaltunturi measurement station during the Pallas Cloud Experiment 2022
Abstract. This work describes the in-situ aerosol measurements at the Arctic Sammaltunturi measurement station in Pallas in northern Finland. This data paper, describes the instruments and the data post processing of key aerosol particle measurements that are relevant for cloud properties. Data reported here are part of the Pallas Cloud Experiment in 2022 (PaCE2022). The in-situ measurements described in this paper and are complementary to the research related to the PaCE 2022 campaign that investigates aerosol and cloud properties such as transects and profiles obtained from balloons, drones, and remote sensing techniques. All data from the campaign resides in a campaign dedicated data repository for easy access and overview. In addition, this data paper will also act as a future reference on how aerosol measurements are conducted and post-processed at the site for future publications. The data set is available at PaCE 2022 campaign data repository at https://zenodo.org/communities/pace2022/ (last access: May 7, 2025). The data described here is available at https://doi.org/10.5281/zenodo.14900651 (last access: May 7, 2025) (Backman et al., 2025).
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RC1: 'Comment on essd-2025-284', Anonymous Referee #1, 20 Sep 2025
The comment was uploaded in the form of a supplement: https://essd.copernicus.org/preprints/essd-2025-284/essd-2025-284-RC1-supplement.pdfCitation: https://doi.org/
10.5194/essd-2025-284-RC1 -
RC2: 'Comment on essd-2025-284', Anonymous Referee #2, 22 Dec 2025
The manuscript by Backman et al. presents in-situ aerosol measurements collected in the Arctic during PaCE2022. The datasets described in this work represent valuable contributions to Arctic aerosol research and should be published, however the manuscript in its current form presents fundamental issues that need to be addressed. I recommend major revisions prior to resubmission.
General Comments
- The text contains numerous grammatical errors and language issues that significantly impact readability and scientific communication. Furthermore, several sentences convey similar information which creates redundancy. I strongly encourage the authors to conduct a thorough proofreading and structural refinement to enhance clarity and conciseness before resubmission (please also see my detailed comments below).
- The abstract contains repetitive and redundant sentences that reduce clarity and conciseness. Structural refinement is needed to eliminate these redundancies. Please, see my detailed comments in the “Specific comments” section below.
- The Background section fails to articulate specific PaCE2022 research objectives and explain how the datasets presented here contribute to those research goals. A more structured description would better demonstrate the significant value of this dataset.
- The In-situ instruments section requires comprehensive revision and reformulation. Currently, it provides extensive technical descriptions of well-established, standard atmospheric instruments that detract from the manuscript's primary focus on the datasets. I recommend restructuring this section to eliminate general instrument theory and focus exclusively on campaign-specific deployment details, including any instrument modifications made specifically for this study, and related methodological considerations. Standard operating principles should be replaced with concise references to established literature or manufacturer specifications. Redundancy with the Data Processing section should be avoided (for instance, the nephelometer model information (lines 339-341) is repeated unnecessarily. Such duplication should be eliminated through cross-referencing or consolidation of instrument specifications). I would be happy to provide specific comments on this section after the recommended revisions have been implemented.
- The Data Processing section should be comprehensively revised and streamlined to avoid redundancy with the Instruments section and improve overall readability. I recommend maintaining consistency in organizing each instrument's dataset description to ensure uniform structure across all I would be happy to provide specific comments on this section after the recommended revisions have been implemented.
- I recommend including a table that summarizes calibration activity dates performed during PaCE2022 that may have affected data availability.
- The summary section is very limited and doesn’t address potential applications and future research directions. I recommend substantially expanding this section to clearly articulate how the presented datasets can be leveraged by the scientific community and integrated into broader atmospheric studies, thereby strengthening the manuscript's impact and value to the field.
- Problems with instruments should not be mentioned in incomplete sentences but should be properly discussed with appropriate technical detail. For example, could you please clarify what "bit nosy" means in lines 363-365? Did this issue affect data quality?
Specific comments
Abstract section
Please streamline the following sentences to improve clarity and eliminate redundant phrasing:
- Sentences 1 (line 2-3) and 2 (line 3-4) both describe that the paper presents aerosol measurements and instrument descriptions - this could be consolidated into a single, clearer statement
- Sentences 3 (line 4) and 4 (line 4-6) both introduce PaCE2022 and could be streamlined by integrating their key information
- Sentences 5 (line 6-7), 7 (line 9-10), and 8 (line 10-111) all address data availability and repository information with overlapping messaging that could be consolidated into a single, clear data availability statement
- Sentence 6 (line 7-9) "this data paper will also act as a future reference" is redundant with " for future publications”
Line 3: "This data paper, describes" - unnecessary comma
Line 5: "described in this paper and are complementary" - should be "described in this paper are complementary"
Line 7: "All data from the campaign resides" - should be "reside"
Background section
Line 13: "Aerosol particle suspended in air" - should be "Aerosol particles suspended in air"
Line 14: " by scattering and/or absorbing solar radiation” – could be " by scattering and/or absorbing it”
Line 18: “to a lesser extent the aerosol particles chemical composition” should be “to a lesser extent by the aerosol particles chemical composition”
Line 18: "e.g. Dusek et al. (2006) REF?" - incomplete reference formatting
Line 22-23: please, clarify this statement and provide references
Line 24: "The Arctic is a particularly vulnerable" - should be "The Arctic is particularly vulnerable"
Line 27-29: please, clarify this statement and provide references
Line 28: "snow and sea ice is replaced" - should be "are replaced"
Line 31: "happening in Arctic" - should be "happening in the Arctic"
Line 40: "those factors were found to be limiting" - perhaps better as "these factors limit"
Line 40: “Our previous research” – what does it refer to?
Line 43: “subarctic aerosol up to” – perhaps replace with “subarctic aerosol properties with consequences on CCN…”
Line 45: “This paper is a data description paper” – redundant use of "paper"
Line 48: “The duration of the PaCE 2022 campaign was from 15 September 2022 to 15 December 2022” - Awkward phrasing should be "The PaCE 2022 campaign ran from..." or "took place from...”
Line 50: Brus et al. (2025) reference could not be verified. Please confirm this citation is correct
Instrumentation section
Line 53: This section would benefit from a reference describing Pallas station (e.g. Lohila et al. 2015, Preface to the special issue on integrated research of atmosphere, ecosystems and environment at Pallas or similar comprehensive site description)
Line 54: redundant use of "located"
Line 55-56: redundant use of "station"
Line 57: the summary table of the instrument should be introduced in the section describing the instruments not here
Line 59: “measuring through” – conceptually incorrect, instruments don't "measure through" inlets. The verb tense is also incorrect
Line 63-64: The inlet design is detailed in Weingartner et al. (1999), this sentence is unnecessary and should either be deleted or consolidated with the previous sentence.
Line 67-68: the two sentences would benefit from some structural refinement to enhance clarity and conciseness
Line 78: remove “also”
Line 81-85: the two sentences would benefit from some structural refinement to enhance clarity
Citation: https://doi.org/10.5194/essd-2025-284-RC2
Data sets
In-situ aerosol measurements at the Arctic Sammaltunturi measurement station during the Pallas Cloud Experiment 2022 John Backman et al. https://doi.org/10.5281/zenodo.14900651
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