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Approach for determining the contributions of phytoplankton, colored organic material, and nonalgal particles to the total spectral absorption in marine waters
[Lin, Junfang; Cao, Wenxi; Wang, Guifeng; Hu, Shuibo] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China; Hu, Shuibo] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; wxcao@scsio.ac.cn
2013
Source PublicationAPPLIED OPTICS
ISSN1559-128X
Volume52Issue:18Pages:4249-4257
AbstractUsing a data set of 1333 samples, we assess the spectral absorption relationships of different wave bands for phytoplankton (ph) and particles. We find that a nonlinear model (second-order quadratic equations) delivers good performance in describing their spectral characteristics. Based on these spectral relationships, we develop a method for partitioning the total absorption coefficient into the contributions attributable to phytoplankton [alpha(ph)(lambda)], colored dissolved organic material [CDOM; alpha(CDOM)(lambda)], and nonalgal particles [NAP; alpha(NAP)(lambda)]. This method is validated using a data set that contains 550 simultaneous measurements of phytoplankton, CDOM, and NAP from the NASA bio-Optical Marine Algorithm Dataset. We find that our method is highly efficient and robust, with significant accuracy: the relative root-mean-square errors (RMSEs) are 25.96%, 38.30%, and 19.96% for alpha(ph)(443), alpha(CDOM)(443), and the CDOM exponential slope, respectively. The performance is still satisfactory when the method is applied to water samples from the northern South China Sea as a regional case. The computed and measured absorption coefficients (167 samples) agree well with the RMSEs, i.e., 18.50%, 32.82%, and 10.21% for alpha(ph)(443), alpha(CDOM)(443), and the CDOM exponential slope, respectively. Finally, the partitioning method is applied directly to an independent data set (1160 samples) derived from the Bermuda Bio-Optics Project that contains relatively low absorption values, and we also obtain good inversion accuracy [RMSEs of 32.37%, 32.57%, and 11.52% for alpha(ph)(443), alpha(CDOM)(443), and the CDOM exponential slope, respectively]. Our results indicate that this partitioning method delivers satisfactory performance for the retrieval of alpha(ph), alpha(CDOM), and alpha(NAP). Therefore, this may be a useful tool for extracting absorption coefficients from in situ measurements or remotely sensed ocean-color data. (C) 2013 Optical Society of America
DepartmentLTO
Subject AreaOptics
Funding OrganizationThis study was supported jointly by several Key Projects of the National Natural Science Foundation of China (grants 41076014, U0933005, U1033003, 41176035, and 41206029). We also thank SeaBASS and all the contributors to the NOMAD and BBOP data sets. ; This study was supported jointly by several Key Projects of the National Natural Science Foundation of China (grants 41076014, U0933005, U1033003, 41176035, and 41206029). We also thank SeaBASS and all the contributors to the NOMAD and BBOP data sets. ; This study was supported jointly by several Key Projects of the National Natural Science Foundation of China (grants 41076014, U0933005, U1033003, 41176035, and 41206029). We also thank SeaBASS and all the contributors to the NOMAD and BBOP data sets. ; This study was supported jointly by several Key Projects of the National Natural Science Foundation of China (grants 41076014, U0933005, U1033003, 41176035, and 41206029). We also thank SeaBASS and all the contributors to the NOMAD and BBOP data sets.
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Language英语
Funding OrganizationThis study was supported jointly by several Key Projects of the National Natural Science Foundation of China (grants 41076014, U0933005, U1033003, 41176035, and 41206029). We also thank SeaBASS and all the contributors to the NOMAD and BBOP data sets. ; This study was supported jointly by several Key Projects of the National Natural Science Foundation of China (grants 41076014, U0933005, U1033003, 41176035, and 41206029). We also thank SeaBASS and all the contributors to the NOMAD and BBOP data sets. ; This study was supported jointly by several Key Projects of the National Natural Science Foundation of China (grants 41076014, U0933005, U1033003, 41176035, and 41206029). We also thank SeaBASS and all the contributors to the NOMAD and BBOP data sets. ; This study was supported jointly by several Key Projects of the National Natural Science Foundation of China (grants 41076014, U0933005, U1033003, 41176035, and 41206029). We also thank SeaBASS and all the contributors to the NOMAD and BBOP data sets.
WOS IDWOS:000320708500021
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/10903
Collection热带海洋环境国家重点实验室(LTO)
Corresponding Authorwxcao@scsio.ac.cn
Recommended Citation
GB/T 7714
[Lin, Junfang,Cao, Wenxi,Wang, Guifeng,et al. Approach for determining the contributions of phytoplankton, colored organic material, and nonalgal particles to the total spectral absorption in marine waters[J]. APPLIED OPTICS,2013,52(18):4249-4257.
APA [Lin, Junfang,Cao, Wenxi,Wang, Guifeng,Hu, Shuibo] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China,Hu, Shuibo] Univ Chinese Acad Sci, Beijing 100049, Peoples R China,&wxcao@scsio.ac.cn.(2013).Approach for determining the contributions of phytoplankton, colored organic material, and nonalgal particles to the total spectral absorption in marine waters.APPLIED OPTICS,52(18),4249-4257.
MLA [Lin, Junfang,et al."Approach for determining the contributions of phytoplankton, colored organic material, and nonalgal particles to the total spectral absorption in marine waters".APPLIED OPTICS 52.18(2013):4249-4257.
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