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Furthermore, using this model, the indirect (or dark) photobleaching (i.e. that
occurring outside the irradiation wavelength) has been shown to be important to the
overall rate of CDOM absorption loss
49
. Ignoring this indirect bleaching leads to a
substantial underestimate of the loss of CDOM absorption upon light exposure.
A theoretical model, based on the a superposition of independent chromophores
undergoing photobleaching independently
49
, has also been shown to be inconsistent
with the experimental photobleaching results, suggesting that the CDOM absorption
spectrum is not simply the result of a superposition of the absorption of numerous,
distinct chromophores. Further experiments are in progress to address this question.
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