Articles | Volume 11, issue 22
Biogeosciences, 11, 6277–6292, 2014
https://doi.org/10.5194/bg-11-6277-2014

Special issue: EUROSPEC – spectral sampling tools for vegetation biophysical...

Biogeosciences, 11, 6277–6292, 2014
https://doi.org/10.5194/bg-11-6277-2014

Research article 21 Nov 2014

Research article | 21 Nov 2014

Retrieval of the photochemical reflectance index for assessing xanthophyll cycle activity: a comparison of near-surface optical sensors

A. Harris et al.

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Angela Harris on behalf of the Authors (09 Oct 2014)  Author's response    Manuscript
ED: Publish subject to technical corrections (16 Oct 2014) by Georg Wohlfahrt
AR by Angela Harris on behalf of the Authors (16 Oct 2014)  Author's response    Manuscript
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Short summary
Lower-cost optical sensors, which can be left outdoors, are often used to provide information regarding plant photosynthetic activity. A lower-cost sensor was compared with an expensive instrument to see if the data collected were comparable. Both instruments were able to track changes in photosynthetic activity, but the values recorded by each were different. This can cause difficulties when comparing data across space and time. We provide advice on how best to use these sensors in the field.
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