光谱学与光谱分析 |
|
|
|
|
|
The Influence of Nonuniform Vertical Profiles of Chlorophyll Concentration on Apparent Optical Properties |
XI Ying1, DU Ke-ping1*, ZHANG Li-hua1, Zhongping Lee2, LI Xiao-wen1 |
1. Research Center for Remote Sensing and GIS, School of Geography, Beijing Normal University, State Key Laboratory of Remote Sensing Science, Beijing Key Laboratory for Remote Sensing of Environment and Digital Cities, Beijing 100875, China 2. Northern Gulf Institute, Mississippi State University, MS 39529, USA |
|
|
Abstract Previous researches on ocean optics and ocean color were based on the assumption that inherent optical properties and optically significant constituents of seawater are homogeneous in the vertical direction. However, oceanographic observations show that the assumption is not always exact and the vertical inhomogeneity of them exists in the upper ocean. The purpose of the present research is to study the effect of nonuniform vertical profiles of chlorophyll concentration on apparent optical properties with radiative transfer model Hydrolight. The vertical profiles of chlorophyll concentration were approximated according to a Gaussian function (Lewis et al, 1983). The apparent optical properties of seawater with nonuniform chlorophyll concentration profiles were simulated with Hydrolight radiative transfer model and case-1 bio-optical model, and then compared with those for homogenous ocean whose chlorophyll concentration was identical to the background chlorophyll concentration of inhomogenous cases. The results reveal that the subsurface maximal chlorophyll concentration increases the remote sensing reflectance at the blue wavelength and decreases it at the green wavelength, nonuniform vertical profiles of chlorophyll concentration change the diffuse attenuation coefficient profiles and the angular structure of the light field in the seawater, and the diffuse attenuation coefficients maximum and average cosines minimum appear at the depth of the maximal chlorophyll concentration.
|
Received: 2009-01-25
Accepted: 2009-04-17
|
|
Corresponding Authors:
DU Ke-ping
E-mail: kpdu@bnu.edu.cn
|
|
[1] Dandonneau Y. Oceanologica Acta, 1979, 2: 133. [2] Gordon H R, McCluney W R. Applied Optics, 1975, 14: 413. [3] Gordon H R, Clark D K. Applied Optics, 1980, 19: 3428. [4] Gordon H R. Applied Optics, 1992, 31(12): 2116. [5] Stramska M, Stramski D. Applied Optics, 2005, 44(9): 1735. [6] Xiu P, Liu Y, Tang J. International Journal of Remote Sensing, 2008, 29(3): 831. [7] Lee Z P, Carder K L, Mobley C D, et al. Applied Optics, 1998, 37(27): 6329. [8] Lewis M R, Cullen J J, Platt T. Journal of Geophysical Research, 1983, 88: 2265. [9] Pope R M, Fry E S. Applied Optics, 1997, 36: 8710. [10] Prieur L, Sathyendranath S. Limnology and Oceanography, 1981, 26: 671. [11] Morel A. Prog. Oceanogr, 1991, 26: 263. [12] Smith R C, Baker K. Applied Optics, 1981, 20: 177. [13] Gordon H R, Morel A. Remote Assessment of Ocean Color for Interpretation of Satellite Visible Imagery-A Review, Lecture Notes on Coastal and Estuarine Studies. Berlin: Springer-Verlag, 1983. [14] Lee Z P, Du K P, Arnone R. Journal of Geophysical Research, 2005,110(c2): 02016. [15] Kirk J T O. Limnology and Oceanography, 1984, 29(2): 350. [16] Kirk J T O. Limnology and Oceanography, 1994, 39(3):702. [17] Kirk J T O. Limnology and Oceanography, 1991, 36(3): 455. [18] Preisendorfer R W. J.Mar.Res, 1959, 18: 1. [19] Zaneveld J R. Limnology and Oceanography, 1989, 34(8): 1442. [20] Bannister T T. Limnology and Oceanography, 1992, 37(4): 773. [21] Bernald J, Stramski D, Mobley C D, Kiefer D A. Limnology and Oceanography, 1995, 40(8): 1347.
|
[1] |
WANG Chun-juan1, 2, ZHOU Bin1, 2*, ZHENG Yao-yao3, YU Zhi-feng1, 2. Navigation Observation of Reflectance Spectrum of Water Surface in Inland Rivers[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(03): 878-883. |
[2] |
DING Kai1,2, LI Qing-quan1,2*, ZHU Jia-song1,2, WANG Chi-sheng1,2,3*, CUI Yang1,2, GUAN Ming-lei1,2, WANG Dan1,2, FAN Xing4. Analysis of Diffuse Attenuation Coefficient Spectra of Coastal Waters of Hainan Island and Performance Estimation of Airborne LiDAR Bathymetry[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(05): 1582-1587. |
[3] |
LI Jun-sheng1, ZHANG Bing1*, SHEN Qian1, ZHANG Hao1, ZHANG Fang-fang1, 2, WANG Qiao3 . Analysis of Directional Reflectance Properties of Lake Taihu Using Multi-Angle Measurements[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(09): 2506-2511. |
[4] |
SHEN Qian1, ZHANG Bing1,2*, LI Jun-sheng1, WU Yuan-feng1, WU Di1, SONG Yang1, ZHANG Fang-fang1,2, WANG Gan-lin1,2. Characteristic Wavelengths Analysis for Remote Sensing Reflectance on Water Surface in Taihu Lake [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(07): 1892-1897. |
[5] |
WANG Fan1,2,ZHOU Bin1*,XU Jian-ming2,LING Zai-ying1,ZHUO Gen-di2 . Surface Spectral Measurement and Characteristics Analysis of Turbid Water in Hangzhou Bay[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(03): 730-734. |
|
|
|
|