Summary of absorption and pigment analyses in support of reservoir monitoring by the Los Angeles Department of Water and Power

Submitted August 7, 1998 to Dr. Brian White

Los Angeles Department of Water and Power

Prepared by

Scripps Institution of Oceanography Photobiology Group

Dr. B. Greg Mitchell, Principal Investigator

SIO/UCSD 0218

La Jolla, CA 92093-0218

gmitchell@ucsd.edu; tel: 619-534-2687; fax: 619-534-2997

Abstract

From late February through late June, the Scripps Photobiology Group (SIO SPG) carried out analyses of particle, detrital and soluble absorption coefficients (ap, ad, as) and chlorophyll plus phaeo pigments (chl+phaeo) for samples collected periodically by technicians of the Los Angeles Department of Water and Power (LADWP). The work accomplished through the end of July, 1998 is summarized in this report.

 Contents

The report is organized by tabbed sections as follows:

Observations and Conclusions

After a very preliminary evaluation of raw and processed data, several key points and conclusions may be drawn based on evaluating the graphs in the tabbed sections "LADWP Summary Graphs" and "ap/ad/as Processed Graphs". These preliminary observations and conclusions are not construed as a final, scientific interpretation, but rather a brief, cursory summary.

Recommendations

Descriptions for filenames

 The zip diskette contains :

The raw data files are in the subdirectory :/backup_of_samples/*.*

The *.sp2 are files that were run on the Varian spectrophotometer.

The *.dx are files that were run on the Perkin Elmer spectrophotometer.

The processed data files are in the subdirectory : /report_to_ladwp/processed_results/*.*

The files with the extensions of *.fr1 are ap/ad files.

The files with the extensions of *.sp6 are as files.

 

Graphs maybe generated using the asstaplt.m files in the program subdirectory along with the block files. Read the apadpro32_552_readme.doc for protocol on running the apadpro32_552.exe program. The asstaplt.m file is a Matlab program. It is used to generate processed graphs only. Processing of the data is done with apadpro32_552.exe