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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Cited articles

Anderson, K., Rossini, M., Pacheco-Labrador, J., Balzarolo, M., Mac Arthur, A., Fava, F., Julitta, T., and Vescovo, L.: Inter-comparison of hemispherical conical reflectance factors (HCRF) measured with four fibre-based spectrometers, Optics Express, 21, 605–617, 2013.
Castro-Esau, K. L., Sanchez-Azofeifa, G. A., and Rivard, B.: Comparison of spectral indices obtained using multiple spectroradiometers, Remote Sens. Environ., 103, 276–288, 2006.
Cheng, Y. B., Middleton, E. M., Huemmrich, K. F., Zhang, Q. Y., Campbell, P. K. E., Corp, L. A., Russ, A. L., and Kustas, W. P.: Utilizing in situ directional hyperspectral measurements to validate bio-indicator simulations for a corn crop canopy, Ecol. Inform., 5, 330–338, 2010.
Duggin, M. J.: The field measurement of reflectance factors, Photogramm. Eng. Rem. Sens., 46, 643–647, 1980.
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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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