Scholarlink

<p>This study examines particulate organic carbon (POC) concentrations in the Arabian Sea (AS) using both in-situ and satellite data analysis. In-situ measurements revealed varying POC levels, with coastal regions exhibiting higher productivity in satellite images. Two distinct algorithms, Krishna et al. (IEEE Transactions on Geoscience and Remote Sensing 61:1–16, 2023), and Stramski et al. (Biogeosciences 5:171–201, 2008), implemented on both OCM-3 (360&#xa0;m resolution) and MODIS-Aqua (4&#xa0;km resolution) satellite sensors, were evaluated. OCM-3 satellite-derived POC concentrations ranged from 78.19 to 410.51&#xa0;mg/m<sup>3</sup> (Krishna et al. in IEEE Transactions on Geoscience and Remote Sensing 61:1–16, 2023) and 142.69 to 456.39&#xa0;mg/m<sup>3</sup> (Stramski et al. in Biogeosciences 5:171–201, 2008). MODIS-aqua satellite-derived POC concentrations spanned from 45.93 to 455.97&#xa0;mg/m<sup>3</sup> and 45.59 to 406.29&#xa0;mg/m<sup>3</sup> using the aforementioned algorithms. Regression analysis showed moderate correlations between in-situ and satellite-derived POC concentrations, with OCM-3 (R<sup>2</sup> = 0.641 and 0.513) data demonstrating better relationships than MODIS-aqua (R<sup>2</sup> = 0.507 and 0.503) using above mentioned algorithms. Compared with the open oceans, POC concentration of the coastal region is relatively higher due to the uptake rates of nutrient supply through upwelling, riverine inputs and terrestrial runoff. However, this study emphasizes the importance of considering regional variability and environmental factors in POC estimation algorithms. Future research will focus on improving accuracy and understanding the implications of POC dynamics in the AS in the perspective of climate change and regional biogeochemistry.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Assessing the Accuracy and Performance of Satellite-Derived Particulate Organic Carbon in Arabian Sea Coastal Waters with Oceansat-3 (OCM), MODIS-Aqua and In-Situ Datasets

  • 期刊论文

  • 发表日期：

    2025年7月10日

查看全文
  • Kandasamy Priyanka,
  • Ranjit Kumar Sarangi,
  • Bimal Kumar Bhattacharya

摘要

This study examines particulate organic carbon (POC) concentrations in the Arabian Sea (AS) using both in-situ and satellite data analysis. In-situ measurements revealed varying POC levels, with coastal regions exhibiting higher productivity in satellite images. Two distinct algorithms, Krishna et al. (IEEE Transactions on Geoscience and Remote Sensing 61:1–16, 2023), and Stramski et al. (Biogeosciences 5:171–201, 2008), implemented on both OCM-3 (360 m resolution) and MODIS-Aqua (4 km resolution) satellite sensors, were evaluated. OCM-3 satellite-derived POC concentrations ranged from 78.19 to 410.51 mg/m3 (Krishna et al. in IEEE Transactions on Geoscience and Remote Sensing 61:1–16, 2023) and 142.69 to 456.39 mg/m3 (Stramski et al. in Biogeosciences 5:171–201, 2008). MODIS-aqua satellite-derived POC concentrations spanned from 45.93 to 455.97 mg/m3 and 45.59 to 406.29 mg/m3 using the aforementioned algorithms. Regression analysis showed moderate correlations between in-situ and satellite-derived POC concentrations, with OCM-3 (R2 = 0.641 and 0.513) data demonstrating better relationships than MODIS-aqua (R2 = 0.507 and 0.503) using above mentioned algorithms. Compared with the open oceans, POC concentration of the coastal region is relatively higher due to the uptake rates of nutrient supply through upwelling, riverine inputs and terrestrial runoff. However, this study emphasizes the importance of considering regional variability and environmental factors in POC estimation algorithms. Future research will focus on improving accuracy and understanding the implications of POC dynamics in the AS in the perspective of climate change and regional biogeochemistry.