Preprints
https://doi.org/10.5194/egusphere-2022-1506
https://doi.org/10.5194/egusphere-2022-1506
16 Jan 2023
 | 16 Jan 2023

Spaceborne thermal infrared observations of Arctic sea ice leads at 30 m resolution

Yujia Qiu, Xiao-Ming Li, and Huadong Guo

Abstract. Sea ice leads are elongated fractures within sea ice cover, playing an important role in the heat exchange from the ocean to the overlying atmosphere. Narrow leads less than a hundred meters in width contribute considerable heat fluxes, requiring fine-scale observation of Arctic leads. With the launch of Sustainable Development Science Satellite 1 (SDGSAT-1) by China on 5 November 2021, the on-board Thermal Infrared Spectrometer (TIS) provides thermal infrared imagery at an unprecedented resolution of 30 m in a swath of 300 km. We propose a method adapted to the TIS high-resolution infrared images for lead detection in the Arctic. For the first time, the spatial resolution of leads by infrared remote sensing increases from the scale of kilometers to tens of meters. For the Beaufort Sea cases in April 2022, the detection is consistent with the Sentinel-2 visible images, yielding an overall accuracy of 96.30 %. Compared with the Moderate-Resolution Imaging Spectroradiometer (MODIS), the TIS presents more leads with width less hundreds of meters than the results based on the MODIS data. For the three infrared bands of the TIS, the B2 (10.3–11.3 µm) and B3 (11.5–12.5 µm) bands, show similar performances in detecting leads. The B1 band (8.0–10.5 µm) can be complementary to the other two bands, as the temperature measurement sensitivity is different from the other two, benefiting better detection by combining the three bands. This study demonstrates that SDGSAT-1 TIS data at 30 m resolution is well applicable for observing previously unresolvable ice leads, and will provide insight into the contribution of narrow leads to rapid sea ice changes in the Arctic.

Journal article(s) based on this preprint

14 Jul 2023
Spaceborne thermal infrared observations of Arctic sea ice leads at 30 m resolution
Yujia Qiu, Xiao-Ming Li, and Huadong Guo
The Cryosphere, 17, 2829–2849, https://doi.org/10.5194/tc-17-2829-2023,https://doi.org/10.5194/tc-17-2829-2023, 2023
Short summary

Yujia Qiu et al.

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-1506', Anonymous Referee #1, 01 Feb 2023
  • RC2: 'Comment on egusphere-2022-1506', Anonymous Referee #2, 13 Feb 2023

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-1506', Anonymous Referee #1, 01 Feb 2023
  • RC2: 'Comment on egusphere-2022-1506', Anonymous Referee #2, 13 Feb 2023

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
ED: Reconsider after major revisions (further review by editor and referees) (30 Mar 2023) by Lars Kaleschke
AR by Xiaoming Li on behalf of the Authors (23 Apr 2023)  Author's response   Author's tracked changes   Manuscript 
ED: Referee Nomination & Report Request started (24 Apr 2023) by Lars Kaleschke
RR by Anonymous Referee #2 (08 May 2023)
ED: Publish subject to revisions (further review by editor and referees) (09 May 2023) by Lars Kaleschke
AR by Xiaoming Li on behalf of the Authors (31 May 2023)  Author's response   Author's tracked changes   Manuscript 
ED: Publish subject to technical corrections (13 Jun 2023) by Lars Kaleschke
AR by Xiaoming Li on behalf of the Authors (15 Jun 2023)  Author's response   Manuscript 

Journal article(s) based on this preprint

14 Jul 2023
Spaceborne thermal infrared observations of Arctic sea ice leads at 30 m resolution
Yujia Qiu, Xiao-Ming Li, and Huadong Guo
The Cryosphere, 17, 2829–2849, https://doi.org/10.5194/tc-17-2829-2023,https://doi.org/10.5194/tc-17-2829-2023, 2023
Short summary

Yujia Qiu et al.

Yujia Qiu et al.

Viewed

Total article views: 553 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
402 130 21 553 4 4
  • HTML: 402
  • PDF: 130
  • XML: 21
  • Total: 553
  • BibTeX: 4
  • EndNote: 4
Views and downloads (calculated since 16 Jan 2023)
Cumulative views and downloads (calculated since 16 Jan 2023)

Viewed (geographical distribution)

Total article views: 549 (including HTML, PDF, and XML) Thereof 549 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 14 Jul 2023
Download

The requested preprint has a corresponding peer-reviewed final revised paper. You are encouraged to refer to the final revised version.

Short summary
Spaceborne thermal infrared sensors with kilometer-scale resolution cannot support adequate parameterization of Arctic leads. For the first time, we applied the 30 m resolution data from the Thermal Infrared Spectrometer (TIS) on the emerging SDGSAT-1 to detect Arctic leads. Validation with Sentinel-2 data shows high accuracy for the three TIS bands. Compared to the MODIS, the TIS presents more narrow leads, demonstrating its great potential for observing previously unresolvable Arctic leads.