A coarse pixel-scale ground “truth” dataset based on global in situ site measurements to support validation and bias correction of satellite surface albedo products

Pan, Fei; Wu, Xiaodan; Zeng, Qicheng; Tang, Rongqi; Wang, Jingping; Lin, Xingwen; You, Dongqin; Wen, Jianguang; Xiao, Qing

doi:https://doi.org/10.5194/essd-16-161-2024

Articles | Volume 16, issue 1

https://doi.org/10.5194/essd-16-161-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/essd-16-161-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 16, issue 1

Data description paper

|

10 Jan 2024

Data description paper |

| 10 Jan 2024

A coarse pixel-scale ground “truth” dataset based on global in situ site measurements to support validation and bias correction of satellite surface albedo products

Fei Pan, Xiaodan Wu, Qicheng Zeng, Rongqi Tang, Jingping Wang, Xingwen Lin, Dongqin You, Jianguang Wen, and Qing Xiao

Download

Final revised paper (published on 10 Jan 2024)
Preprint (discussion started on 12 Jul 2023)

Interactive discussion

Status: closed

RC1:
'Comment on essd-2023-220', Anonymous Referee #1, 04 Aug 2023

The comment was uploaded in the form of a supplement: https://essd.copernicus.org/preprints/essd-2023-220/essd-2023-220-RC1-supplement.pdf

Citation: https://doi.org/10.5194/essd-2023-220-RC1
- AC2: 'Reply on RC1', Fei Pan, 25 Sep 2023
  
  Please find the attachment for the detailed responses.
  
  Citation: https://doi.org/10.5194/essd-2023-220-AC2
RC2:
'Comment on essd-2023-220', Anonymous Referee #2, 08 Aug 2023

Please see the supplement.

Citation: https://doi.org/10.5194/essd-2023-220-RC2
- AC1: 'Reply on RC2', Fei Pan, 25 Sep 2023
  
  Please find the attachment for the detailed responses.
  
  Citation: https://doi.org/10.5194/essd-2023-220-AC1

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload

AR by Fei Pan on behalf of the Authors (25 Sep 2023) Author's response Author's tracked changes Manuscript

ED: Referee Nomination & Report Request started (26 Sep 2023) by Jing Wei

RR by Anonymous Referee #2 (23 Oct 2023)

Suggestions for revision or reasons for rejection

Please see the attachment for more detail.

2nd Review of "
A coarse pixel scale ground "truth" dataset based on the global
in situ site measurements to support validation and bias correction of satellite
.
The new manuscript has been revised greatly. Authors should answer the following comments before the publication.
Major comments:
1. Lines287-288:It’s difficult to see “BSRN network generally exhibits higher accuracy and satisfies the precision benchmarks” in Figure 5. Please show more analysis (Figures or tables) to support your point.
2. Lines297-298:Authors highlighted that “It is worth noting that when the spatial heterogeneity exceeds 0.1, the model’s stability fluctuates considerably, indicated by the larger height of the boxplots of RMSE and R2.” However, the height of the boxplots of RMSE with spatial heterogeneity < 0.1 in Figure 6a is much larger than that of the other two obviously, while the outliers with spatial heterogeneity < 0.1 in both panels of Figure 6 are much more than those of the other two significantly. Therefore, how can the authors highlight the above result?
3. Figure 11: Please explain why the results (percentages) in Figure 11 is quite different in the revised manuscript than those in the previous manuscript (version 1)? In previous version, the RRMSEs are quite lower (around 30%) than those (around 100%) in the revised version.
Minor comments:
1. Section2.2:the description of ETM+ data should be described in detail. I cannot find the resolution of the data here which should not be mentioned in section 3.2. Please modify.
2. Please check the caption of Figure7.Duplicated[200-500].
3. The contents of functions are overlapping in the PDF version.Please double-check the typing of all functions.

Referee Report: PDF

Hide

RR by Anonymous Referee #3 (29 Oct 2023)

RR by Anonymous Referee #1 (30 Oct 2023)

ED: Publish subject to minor revisions (review by editor) (30 Oct 2023) by Jing Wei

AR by Fei Pan on behalf of the Authors (06 Nov 2023) Author's response Author's tracked changes

EF by Sarah Buchmann (08 Nov 2023) Manuscript

ED: Publish as is (08 Nov 2023) by Jing Wei

AR by Fei Pan on behalf of the Authors (10 Nov 2023) Manuscript

Short summary

To effectively tackle the challenges posed by spatial-scale differences and spatial heterogeneity, this paper presents a distinctive coarse pixel-scale ground “truth" dataset by upscaling sparsely distributed in situ measurements. This dataset is a valuable resource for validating and correcting global surface albedo products, enhancing reference data accuracy by 6.04 %. Remarkably, it substantially enhances 17.09 % in regions with strong spatial heterogeneity.