Enteromorpha Prolifera Underwater Spectral Research Based on Simulation of Radiation Transmission
ZHAO Wen-jing1, ZHANG Jie1, 2, CUI Ting-wei1*, HAO Yan-ling1, SUN Ling3, 4
1. First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China 2. Key Laboratory of Marine Science and Numerical Modeling, State Oceanic Administration, Qingdao 266061, China 3. Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites, China Meteorological Administration, Beijing 100081, China 4. National Satellite Meteorological Center, China Meteorological Administration, Beijing 100081, China
Abstract：The accumulation of Enteromorpha prolifera in huge amount in the Yellow sea in June, 2008 draws the attention from all over the world. It is an urgent requirement to monitor the wide range of Enteromorpha prolifera distribution by remote sensing. As to the Enteromorpha prolifera floating on the sea surface, effective monitoring by optical remote sensing has been basically achieved. As far as the underwater suspended Enteromorpha prolifera is concerned, the present paper carried out the radiative transfer simulation research on the above water spectral response, its variation with the suspending depth, the water turbidity and environmental conditions. It was found that with the increase in Enteromorpha prolifera suspending depth and water turbidity as well as the decrease in the thickness of Enteromorpha prolifera, the Enteromorpha prolifera information contained in the surface spectra would decrease. The influence of environmental factors such as water-gas interface roughness, cloud cover extent and sun zenith angle on the underwater suspended Enteromorpha prolifera spectra can be ignored. The maximum Enteromorpha prolifera depth that can cause surface spectrum changes is about 30 m in clean water and about 1 m in turbidity water.
Key words：Enteromorpha prolifera;Spectral;Radiative transfer simulation;Remote sensing
[1] LIN Wen-ting(林文庭). Food and Nutrition in China(中国食物与营养), 2007，9: 923. [2] WU Hong-xi, XU Ai-guang, WU Mei-ning(吴洪喜, 徐爱光, 吴美宁). Journal of Zhejiang Ocean University(浙江海洋学院学报), 2000，19(3): 230. [3] LIU Xian-ping, LI Lei, DAI Jin-feng, et al(柳先平, 李 磊, 戴金凤, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2007，27(10): 2083. [4] RENG Bao-wei, ZHAO Wei-hong, WANG Jiang-tao, et al(任保卫，赵卫红, 王江涛, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2008，28(5): 1130. [5] Zhongping Lee, Kendall L. Carder, Steve K Hawes, et al. Appl. Optics, 1994，33(24): 5721. [6] Pope R M, Fry E S. Appl. Optics, 1997，36(33): 8710. [7] Bricaud A，Morel A，Prieur L. Limnology and Ocengraphy, 1981，26(1): 43. [8] Smith R C, Baker K. Appl. Optics, 1981，20(2): 177. [9] Gould R W, Arnone R A, Martinolich P M. Appl. Optics, 1999，38(12): 2377. [10] Haltrin V I. Appl. Optics, 1999，38(33): 6826. [11] Harrison A W, Coombes C A. Solar Energy, 1988，41(4): 387. [12] Cox C Munk. J. Mar. Res., 1954, 13(2): 198. [13] FENG Shi-zhuo, LI Feng-qi, LI Shao-jing(冯士筰，李凤岐，李少菁). The Introduction of Ocean Science(海洋科学导论). Beijing: Higher Education Press(北京：高等教育出版社)，1999. 283. [14] WANG Xiao-mei, TANG Jun-wu, DING Jing, et al(王小梅，唐军武，丁 静, 等). Acta Oceanolo Gica Sinica(海洋学报)，2005，27(5): 38. [15] MA Yi, ZHANG Jie, CUI Ting-wei(马 毅，张 杰，崔廷伟). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2006，26(12): 2302. [16] CUI Ting-wei, ZHANG Jie, MA Yi, et al(崔廷伟，张 杰，马 毅，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2006，26(5): 884. [17] Mobley C D. Light and Water: Radiative Transfer in Natural Waters. San Diego: Academic Press Inc., 2004. 47.
