Auxiliary Material for Paper 2012GL052974


Photochemical reactivity of ancient marine dissolved organic carbon

Steven R. Beaupre
Department of Earth System Science, University of California, Irvine, California, USA

Now at Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA

Ellen R. M. Druffel
Department of Earth System Science, University of California, Irvine, California, USA



Beaupre, S. R., and E. R. M. Druffel (2012), Photochemical reactivity of ancient marine dissolved organic carbon, Geophys. Res. Lett., 39, L18602, doi:10.1029/2012GL052974.



Introduction

This auxiliary material contains a single text file that supports the manuscript by providing i) derivations of equations from the text, ii) additional details on the key calculations that implement these equations, and iii) an archive of the data in the form of a table. 


1. 2012gl052974-txts01.docx
Text S1. This file includes derivations of equations from the text, additional details on key calculations, and a table of serial-oxidation data.


Contents


S1. Introduction


S2. Derivations

S2.1. Integrated second order kinetics equation for bulk DOC (Equation 2)

S2.2. Integrated second order kinetics equation for binary DOC mixtures (Equation 3)
S2.3. MacLaurin series approximation of equation 3
S2.4. Time-dependence of cumulative DIChv D14C values (Equation 5)

S2.5. Limiting D14C value of residual bulk DOC (Equation 6)


S3. Calculations

S3.1. Comparison of first and second order kinetics

S3.2. Calculating losses in yield due to lamp warm up

S3.3. Percentage of relict carbon in the most reactive fraction of DIChv


Table S1: Concentrations and D14C values of DIChv during serial-oxidations


References

http://dx.doi.org/10.1029/2012GL052974