报告详情
Improvement Chlorophyll-a
编号：1319
访问权限：仅限参会人
更新：2024-10-14 15:25:04 浏览：188次
张贴报告
报告开始：2025年01月16日 20:35（Asia/Shanghai）
报告时间：15min
所在会场：[S46] Session 46-Oceanic Mesoscale and Submesoscale Processes: Characteristics, Dynamics & Parameterizations [S46-P] Oceanic Mesoscale and Submesoscale Processes: Characteristics, Dynamics & Parameterizations
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摘要
Chlorophyll-a (Chl-a) is an important marine indicator, and the improvement in Chl-a concentration retrieval for ocean color remote sensing is always a major challenge. This study focuses on the northwest Pacific fishing ground (NPFG) to evaluate and improve the Chl-a products of three mainstream remote sensing satellites, Himawari-8, MODIS-Aqua, and VIIRS-SNPP. We analyzed in situ data and found that an in situ Chl-a concentration of 0.3 mg m−3 could be used as a threshold to distinguish the systematic deviation of remote sensing Chl-a data in the NPFG. Based on this threshold, we optimized the Chl-a algorithms of the three satellites by data grouping, and integrated multisource satellite Chl-a data by weighted averaging to acquire high-coverage merged data. The merged data were thoroughly verified by Argo Chl-a data. The Chl-a front of merged Chl-a data could be represented accurately and completely and had a good correlation with the distribution of the NPFG. The most important marine factors for Chl-a are nutrients and temperature, which are affected by mesoscale eddies and variations in the Kuroshio extension. The variation trend of merged Chl-a data is consistent with mesoscale eddies and Kuroshio extension and has more sensitive responses to the marine climatic conditions of ENSO.
关键词
Chlorophyll-a algorithms; Oceanic Mesoscale Processes; Northwest Pacific
报告人
Chuanyang Huang
PhD Ocean University of China稿件作者
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重要日期
-
会议日期
01月13日
2025
至01月17日
2025
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09月27日 2024
初稿截稿日期
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01月17日 2025
注册截止日期
主办单位
State Key Laboratory of Marine Environmental Science, Xiamen University
承办单位
State Key Laboratory of Marine Environmental Science, Xiamen University
Department of Earth Sciences, National Natural Science Foundation of China
Department of Earth Sciences, National Natural Science Foundation of China
联系方式
- Kejing GU
- xm******@xmu.edu.cn
- +86*********
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