A REMOTE-SENSING REFLECTANCE MODEL OF A RED-TIDE DINOFLAGELLATE OFF WEST FLORIDA
A REMOTE-SENSING REFLECTANCE MODEL OF A RED-TIDE DINOFLAGELLATE OFF WEST FLORIDA
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DOI：
10.4319/lo.1985.30.2.0286
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发表时间：
1985-01-01
影响因子：
4.5
通讯作者：
STEWARD, RG
中科院分区：
文献类型：
--
作者：
CARDER, KL;STEWARD, RG
建立了一个模拟赤潮甲藻水华遥感反射光谱曲线的数学模型。该模型进行了比较，从低飞直升机获得的测量P. brevis人口与叶绿素类色素浓度从7-77毫克m-3发现在案件2沃茨沿着西佛罗里达州大陆架[美国]在1983年10月。该模型模拟了来自水、浮游植物和碎屑的后向散射的影响，以及由于水、浮游植物、碎屑和黄色溶解物（情况1和情况2沃茨的gelbstoff）的吸收的影响。它可以很容易地修改，以模拟光谱反射浮游植物从其他色素颜色组。将模型光谱曲线与测量的遥感反射率曲线相匹配，可以提供叶绿素a和脱镁叶绿素a的准确估计值，也可以估计gelbstoff和碎屑的浓度。比较遥感反射率数据模型反射率数据允许计算荧光的量子效率为一个给定的浮游植物种群，这提供了一个因素，已被发现增加人口的营养压力的远程测量。
A mathematical model that simulates the spectral curves of remote-sensing reflectance of blooms of the red-tide dinoflagellate Ptychodiscus brevis is developed. The model is compared to measurements obtained from a low-flying helicopter for P. brevis populations with chlorophyll-like pigment concentrations from 7-77 mg m-3 found in the case 2 waters along the west Florida shelf [USA] in Oct. 1983. The model simulates the effects of backscattering from water, phytoplankton, and detritus, and the effects of absorption due to water, phytoplankton, detritus and yellow dissolved matter (gelbstoff for case 1 and case 2 waters. It can be easily modified to simulate the spectral reflectance of phytoplankton from other pigment color groups. Matching the model spectral curves to measured remote-sensing reflectance curves provides accurate estimates of chlorophyll a plus pheophytin a and also estimates of gelbstoff and detritus concentrations. Comparison of remote-sensing reflectance data to model reflectance data allows calculation of the quantum efficiency of fluorescence for a given phytoplankton population, which provides a remote measurement of a factor that has been found to increase with the nutrient stress of the population.