Name
Title | ||
|---|---|---|
Retrieval of Inherent Optical Properties for Turbid Inland Waters From Remote-Sensing Reflectance |
Abstract | ||
|---|---|---|
Remote estimation of inherent optical properties (IOPs) for water bodies cannot only provide indicators of water quality, but also be used in the study on biological and biogeochemical processes of waters. The quasi-analytical algorithm (QAA) is a simple and effective method to retrieve IOPs from remote-sensing reflectance (Rrs). The QAA has been widely validated and applied in oceans, but its application in inland waters is far less extensive. In this paper, the QAA was enhanced to retrieve IOPs for turbid inland waters based on the bandwidths of Medium Resolution Imaging Spectrometer (MERIS). The enhancement was achieved by proposing a semi-analytical model to estimate the spectral slope of particle backscattering, as well as a novel estimation model for phytoplankton absorption coefficient at 443 nm. Two data sets (i.e., noise-free synthetic data and in-situ data) were collected to assess the performance of the enhanced algorithm. Results show that the algorithm yields almost error-free estimations for total absorption and backscattering coefficients and estimations for phytoplankton absorption at 443 nm with acceptable accuracy in the case of synthetic data set. For the in-situ data set, the algorithm retrieves the total absorption coefficients (ranging 0.337-8.331 m-1) with root-mean-square-error in log scale (RMSE) and bias in log scale lower than 0.130 and 0.094, respectively, and phytoplankton absorption at 443 nm (ranging 0.378-4.669 m-1) with RMSE and bias in log scale of 0.151 and 0.096, respectively. These results indicate the potential of the enhanced QAA to accurately retrieve the IOPs from MERIS satellite observations for inland waters. |
Year | DOI | Venue |
|---|---|---|
2013 | 10.1109/TGRS.2012.2220147 | IEEE T. Geoscience and Remote Sensing |
Keywords | Field | DocType |
root-mean-square-error in log scale,remote sensing,remote-sensing reflectance,water quality,medium resolution imaging spectrometer (meris),lakes,meris satellite observations,asian lakes,inherent optical property retrieval,backscattering coefficient,absorption and backscattering coefficients,turbid inland waters,particle backscattering spectral slope,quasi-analytical algorithm (qaa),phytoplankton absorption coefficient,medium resolution imaging spectrometer,total absorption coefficient,water biogeochemical process,water biological process,quasianalytical algorithm,phytoplankton absorption at 443 nm,estimation,water,backscatter,absorption,mathematical model | Imaging spectrometer,Data set,Satellite,IOPS,Backscatter,Remote sensing,Spectral slope,Mean squared error,Synthetic data,Mathematics | Journal |
Volume | Issue | ISSN |
51 | 6 | 0196-2892 |
Citations | PageRank | References |
7 | 1.22 | 10 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Wei Yang | 1 | 74 | 10.46 |
| Bunkei Matsushita | 2 | 68 | 9.80 |
| Jin Chen | 3 | 259 | 31.87 |
| Kazuya Yoshimura | 4 | 8 | 1.65 |
| Takehiko Fukushima | 5 | 40 | 7.43 |