Spaceborne thermal infrared observations of Arctic sea ice leads at 30 m resolution
<p>Sea ice leads play an important role in the heat exchange between the ocean and the overlying atmosphere, particularly narrow leads with widths of less than 100 <span class="inline-formula">m</span>. We present a method for detecting sea ice leads in the Arctic using h...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2023-07-01
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| Series: | The Cryosphere |
| Online Access: | https://tc.copernicus.org/articles/17/2829/2023/tc-17-2829-2023.pdf |
| _version_ | 1797780640667533312 |
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| author | Y. Qiu Y. Qiu Y. Qiu X.-M. Li X.-M. Li H. Guo H. Guo |
| author_facet | Y. Qiu Y. Qiu Y. Qiu X.-M. Li X.-M. Li H. Guo H. Guo |
| author_sort | Y. Qiu |
| collection | DOAJ |
| description | <p>Sea ice leads play an important role in the heat exchange between the ocean and the overlying atmosphere, particularly narrow leads with widths of
less than 100 <span class="inline-formula">m</span>. We present a method for detecting sea ice leads in the Arctic using high-resolution infrared images from the Thermal
Infrared Spectrometer (TIS) on board the Sustainable Development Science Satellite 1 (SDGSAT-1), with a resolution of 30 <span class="inline-formula">m</span> in a swath of
300 <span class="inline-formula">km</span>. With the spatial resolution of leads observed by infrared remote sensing increasing to tens of meters, focused on the Beaufort Sea
cases in April 2022, the TIS-detected leads achieve good agreement with Sentinel-2 visible images. For the three infrared bands of the TIS, the B2
(10.3–11.3 <span class="inline-formula">µm</span>) and B3 (11.5–12.5 <span class="inline-formula">µm</span>) bands show similar performance in detecting leads. The B1 band
(8.0–10.5 <span class="inline-formula">µm</span>) can be usefully complementary to the other two bands, as a result of different temperature measurement
sensitivity. Combining the detected results from the three TIS bands, the TIS is able to detect more leads with widths less than hundreds of meters
compared to the Moderate Resolution Imaging Spectroradiometer (MODIS). Our results demonstrate that SDGSAT-1 TIS data at 30 <span class="inline-formula">m</span> resolution can
effectively observe previously unresolvable sea ice leads, providing new insight into the contribution of narrow leads to rapid sea ice changes in
the Arctic.</p> |
| first_indexed | 2024-03-12T23:46:55Z |
| format | Article |
| id | doaj.art-eb5d86e8d8184c29a410ad8f7616dfc0 |
| institution | Directory Open Access Journal |
| issn | 1994-0416 1994-0424 |
| language | English |
| last_indexed | 2024-03-12T23:46:55Z |
| publishDate | 2023-07-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | The Cryosphere |
| spelling | doaj.art-eb5d86e8d8184c29a410ad8f7616dfc02023-07-14T05:11:11ZengCopernicus PublicationsThe Cryosphere1994-04161994-04242023-07-01172829284910.5194/tc-17-2829-2023Spaceborne thermal infrared observations of Arctic sea ice leads at 30 m resolutionY. Qiu0Y. Qiu1Y. Qiu2X.-M. Li3X.-M. Li4H. Guo5H. Guo6Key Laboratory of Digital Earth Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, ChinaInternational Research Center of Big Data for Sustainable Development Goals, Beijing 100094, ChinaUniversity of Chinese Academy of Sciences, Beijing 100049, ChinaKey Laboratory of Digital Earth Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, ChinaInternational Research Center of Big Data for Sustainable Development Goals, Beijing 100094, ChinaKey Laboratory of Digital Earth Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, ChinaInternational Research Center of Big Data for Sustainable Development Goals, Beijing 100094, China<p>Sea ice leads play an important role in the heat exchange between the ocean and the overlying atmosphere, particularly narrow leads with widths of less than 100 <span class="inline-formula">m</span>. We present a method for detecting sea ice leads in the Arctic using high-resolution infrared images from the Thermal Infrared Spectrometer (TIS) on board the Sustainable Development Science Satellite 1 (SDGSAT-1), with a resolution of 30 <span class="inline-formula">m</span> in a swath of 300 <span class="inline-formula">km</span>. With the spatial resolution of leads observed by infrared remote sensing increasing to tens of meters, focused on the Beaufort Sea cases in April 2022, the TIS-detected leads achieve good agreement with Sentinel-2 visible images. For the three infrared bands of the TIS, the B2 (10.3–11.3 <span class="inline-formula">µm</span>) and B3 (11.5–12.5 <span class="inline-formula">µm</span>) bands show similar performance in detecting leads. The B1 band (8.0–10.5 <span class="inline-formula">µm</span>) can be usefully complementary to the other two bands, as a result of different temperature measurement sensitivity. Combining the detected results from the three TIS bands, the TIS is able to detect more leads with widths less than hundreds of meters compared to the Moderate Resolution Imaging Spectroradiometer (MODIS). Our results demonstrate that SDGSAT-1 TIS data at 30 <span class="inline-formula">m</span> resolution can effectively observe previously unresolvable sea ice leads, providing new insight into the contribution of narrow leads to rapid sea ice changes in the Arctic.</p>https://tc.copernicus.org/articles/17/2829/2023/tc-17-2829-2023.pdf |
| spellingShingle | Y. Qiu Y. Qiu Y. Qiu X.-M. Li X.-M. Li H. Guo H. Guo Spaceborne thermal infrared observations of Arctic sea ice leads at 30 m resolution The Cryosphere |
| title | Spaceborne thermal infrared observations of Arctic sea ice leads at 30 m resolution |
| title_full | Spaceborne thermal infrared observations of Arctic sea ice leads at 30 m resolution |
| title_fullStr | Spaceborne thermal infrared observations of Arctic sea ice leads at 30 m resolution |
| title_full_unstemmed | Spaceborne thermal infrared observations of Arctic sea ice leads at 30 m resolution |
| title_short | Spaceborne thermal infrared observations of Arctic sea ice leads at 30 m resolution |
| title_sort | spaceborne thermal infrared observations of arctic sea ice leads at 30 thinsp m resolution |
| url | https://tc.copernicus.org/articles/17/2829/2023/tc-17-2829-2023.pdf |
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