Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR023024 |
Application of the Beer-Lambert Model to Attenuation of Photosynthetically Active Radiation in a Shallow, Eutrophic Lake | |
Weiskerger, Chelsea J.1; Rowe, Mark D.2; Stow, Craig A.3; Stuart, Dack2; Johengen, Tom2 | |
2018-11-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:11页码:8952-8962 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Models of primary production in aquatic systems must include a means to estimate subsurface light. Such models often use the Beer-Lambert law, assuming exponential attenuation of light with depth. It is further assumed that the diffuse attenuation coefficient may be estimated as a summation of scattering/absorbing constituent concentrations multiplied by their respective specific attenuation coefficients. While theoretical deviations from these assumptions have been documented, it is useful to consider the empirical performance of this common approach. Photosynthetically active radiation (PAR) levels and water quality conditions were recorded weekly from six to eight monitoring stations in western Lake Erie between 2012 and 2016. Exponential PAR extinction models yielded a mean attenuation coefficient of 1.55m (interquartile range=0.74-1.90m). While more complex light attenuation models are available, analysis of residuals indicated that the simple Beer-Lambert model is adequate for shallow, eutrophic waters similar to western Lake Erie (R-2>0.9 for 96% of samples). Three groups of water quality variables were predictive of PAR attenuation: total and nonvolatile suspended particles, dissolved organic substances (dissolved organic carbon and chromophoric dissolved organic matter), and organic solids (volatile suspended solids and chlorophyll). Multiple regression models using these variables predicted 3-90% of the variability in PAR attenuation, with a median adjusted R-2=0.86. Explanatory variables within these groups may substitute for each other while maintaining similar model performance, indicating that various combinations of water quality variables may be useful to predict PAR attenuation, depending on availability within a model framework or monitoring program. |
英文关键词 | photosynthetically active radiation water quality western Lake Erie Beer-Lambert law biophysical model applications |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000453369400022 |
WOS关键词 | OPTICAL-PROPERTIES ; LIGHT ATTENUATION ; VERTICAL-DISTRIBUTION ; RELATIVE IMPORTANCE ; ESCHERICHIA-COLI ; PHOSPHORUS LOADS ; CHESAPEAKE BAY ; WATER-QUALITY ; OCEAN ; ERIE |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21439 |
专题 | 资源环境科学 |
作者单位 | 1.Michigan State Univ, Civil & Environm Engn, E Lansing, MI 48824 USA; 2.Univ Michigan, Cooperat Inst Great Lakes Res, Ann Arbor, MI 48109 USA; 3.NOAA, Great Lakes Environm Res Lab, 2205 Commonwealth Blvd, Ann Arbor, MI 48105 USA |
推荐引用方式 GB/T 7714 | Weiskerger, Chelsea J.,Rowe, Mark D.,Stow, Craig A.,et al. Application of the Beer-Lambert Model to Attenuation of Photosynthetically Active Radiation in a Shallow, Eutrophic Lake[J]. WATER RESOURCES RESEARCH,2018,54(11):8952-8962. |
APA | Weiskerger, Chelsea J.,Rowe, Mark D.,Stow, Craig A.,Stuart, Dack,&Johengen, Tom.(2018).Application of the Beer-Lambert Model to Attenuation of Photosynthetically Active Radiation in a Shallow, Eutrophic Lake.WATER RESOURCES RESEARCH,54(11),8952-8962. |
MLA | Weiskerger, Chelsea J.,et al."Application of the Beer-Lambert Model to Attenuation of Photosynthetically Active Radiation in a Shallow, Eutrophic Lake".WATER RESOURCES RESEARCH 54.11(2018):8952-8962. |
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