Application of the Beer-Lambert Model to Attenuation of Photosynthetically Active Radiation in a Shallow, Eutrophic Lake

Weiskerger, Chelsea J.; Rowe, Mark D.; Stow, Craig A.; Stuart, Dack; Johengen, Tom

doi:10.1029/2018wr023024

Advanced Search

Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

Advanced Search
Custom Query

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Clear All

Query Builder

Query box

Clear All

For additional assistance using the Custom Query please check out our Help Page

i

Application of the Beer-Lambert Model to Attenuation of Photosynthetically Active Radiation in a Shallow, Eutrophic Lake

2018
By Weiskerger, Chelsea J. ; Rowe, Mark D. ; Stow, Craig A. ; ...
Source: Water Resources Research, 54(11), 8952-8962.

[PDF-2.61 MB]

Details You May Also Like

Details:

Journal Title:

Water Resources Research
Personal Author:

Weiskerger, Chelsea J. ; Rowe, Mark D. ; Stow, Craig A. ; Stuart, Dack ; Johengen, Tom

Weiskerger, Chelsea J. ; Rowe, Mark D. ; Stow, Craig A. ; Stuart, Dack ; Johengen, Tom Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; CIGLR (Cooperative Institute for Great Lakes Research) ; GLERL (Great Lakes Environmental Research Laboratory)

OAR (Oceanic and Atmospheric Research) ; CIGLR (Cooperative Institute for Great Lakes Research) ; GLERL (Great Lakes Environmental Research Laboratory) Less -
Description:

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.
Source:

Water Resources Research, 54(11), 8952-8962.
DOI:

https://doi.org/10.1029/2018wr023024
Document Type:

Journal Article
Funding:

Grant no. NA17OAR4320152
Rights Information:

Other
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha256:2cb2fc5e3698a686ed1f25db4844cea50a79acb36467693e03a7d49d66bf9da6
Download URL:

https://repository.library.noaa.gov/view/noaa/20744/noaa_20744_DS1.pdf
File Type:

No Additional Files

More +

Application of the Beer-Lambert Model to Attenuation of Photosynthetically Active Radiation in a Shallow, Eutrophic Lake

Details:

Supporting Files

You May Also Like