| Autor: |
Hu, S.B., Cao, W.X., Wang, G.F., Xu, Z.T., Lin, J. F., Zhao, W.J., Yang, Y.Z., Zhou, W., Sun, Z.H., Yao, L.J. |
| Předmět: |
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| Zdroj: |
International Journal of Remote Sensing; Apr2016, Vol. 37 Issue 7, p1585-1600, 16p, 9 Charts, 6 Graphs, 3 Maps |
| Abstrakt: |
Medium Resolution Imaging Spectrometer (MERIS), Moderate Resolution Imaging Spectroradiometer (MODIS), and Sea-viewing Wide Field-of-view Sensor (SeaWiFS) particulate organic carbon (POC) concentration products for the South China Sea (SCS) were compared within situdata collected from October 2007 to December 2013. Spectral remote-sensing reflectance (Rrs,λ) was also measured to help understand POC algorithm performance. A strict comparison of the satellite-derived POC andin situmeasurements showed that MERIS, MODIS, and SeaWiFS underestimatedin situvalues by 29.1, 11.7, and 31.5%, respectively. Similar results were obtained with a relaxed matching criterion. Through analysis of the causes of product uncertainty, the results suggested that satellite retrieval ofRrs,λand the global POC algorithm both have an impact on inversion accuracy. However, the formulation of the POC algorithm seems to be more critical. When a regional algorithm was developed to obtain satellite-derived POC, both the strict and relaxed comparison results showed significant improvement, but for coastal waters, both algorithms had larger errors. Other factors affecting the comparison are also discussed. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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