Presentation Details
The Application of MII/SDGSAT-1 in Red Tide Detection Along the Guangdong Middle Coast
ID：3184
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Updated Time：2023-04-12 21:36:43 Hits：1993
Oral Presentation
Start Time：2023-05-06 13:10（Asia/Shanghai）
Duration：10min
Session：5A 5A、环境科学 »
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Abstract
The Sustainable Development Science Satellite 1 (SDGSAT-1) is the world’s first science satellite dedicated to serving the United Nations 2030 Agenda for Sustainable Development. The Multispectral Imagers (MII) onboard SDGSAT-1 provides an alternative data source to effectively monitor the coastal water environments. In this study, the performances of MII in red tide detection were evaluated along the Guangdong middle coast. First, the in-orbit signal-to-noise ratios (SNRs) were estimated based on homogenous clear water pixels. The SNRs of the blue and green bands were in the range of 270-410 while those of the red and near-infrared red bands were in the range of 100-160. Then, the nearest non-turbid atmospheric correction was applied to MII data and two types of red tide indexes were compared. The results showed that the hue angle red tide index (HA-RI) better distinguished red tide and turbid water pixels. The Rayleigh-corrected reflectance can also be used to derive HA-RI as well as remote sensing reflectance when decent atmospheric correction is not available. Two red tides that occurred in Daya Bay and Mirs Bay were detected by HA-RI with areas of 13.1 km2 and 5.7 km2, respectively. More detailed spatial characteristics of red tide were observed by MII due to the higher spatial resolution of 10 m. In addition, multi-source data are required to compensate for the weakness of SDGSAT-1 in temporal resolution for red tide tracing. The design of a three-satellite constellation will further enhance the monitoring capacities of SDGSAT series and strengthen sustainable development.
Keywords
SDGSAT,red tide,ocean color,algae bloom
Speaker
吴颉
国防科技大学Submission Author
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Important Date
-
Conference Date
May 05
2023
toMay 08
2023
-
Mar 31 2023
Draft paper submission deadline
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May 25 2023
Registration deadline
Sponsored By
青年地学论坛理事会
中国科学院青年创新促进会地学分会
中国科学院青年创新促进会地学分会
Organized By
武汉大学
中国科学院精密测量科学与技术创新研究院
中国地质大学（武汉）
中国科学院精密测量科学与技术创新研究院
中国地质大学（武汉）
Contact Information
- 管小彬
- gu******@whu.edu.cn
- +86********
- 孙佳妮
- sc******@aconf.org
- +86********
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