厦门大学学报（自然科学版）2016，Vol.55Issue(2)：203-209,7.DOI:10.6043/j.issn.0438-0479.2016.02.010
天空光遮蔽法在高叶绿素水体中的阴影问题研究
Study on the Shading Issue of SBA in High-chlorophyll Waters
摘要
Abstract
Skylight-blocked approach (SBA),developed in 2013,was an innovative method to directly measure water-leaving radiance based on the floating structure,and its key part was the skylight-blocking cone.The shading effect caused by the floating structure and cone,however,is not known yet.In this study,SBA system was established according to the previous study,and the in-fluence on measurement by the floating structure of the SBA instrument was evaluated.It was found that the influence was negligible when the observation azimuth angle of the upwelling radiance radiometer was 0°to 90°and 270°to 360°in sunny days;while the in-fluence was significant at all observation azimuth angles in overcast days,so the floating SBA may not be applicable in such weather conditions.The self-shading of cone would make the critical minimum zenith angle of the self-shading correction model decrease from 37°to 12°,when the radius of shading zone decreased from 4.5 cm to 2.2 cm in high-chlorophyll waters (ρ(Chl)>50 mg/m3 ).关键词
天空光遮蔽法(SBA)/浮体结构/自阴影/遮光锥Key words
skylight-blocked approach (SBA)/floating structure/self-shading/skylight-blocking cone分类
海洋科学引用本文复制引用
陈旭磊,林供,石良海,单宇杰,商少凌..天空光遮蔽法在高叶绿素水体中的阴影问题研究[J].厦门大学学报（自然科学版）,2016,55(2):203-209,7.基金项目
国家科技支撑计划项目(2013BAB04B00) （2013BAB04B00）
