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Towards advanced retrievals of plant transpiration using sun-induced chlorophyll fluorescence: first considerations


Damm, Alexander; Roethlin, Sebastian; Fritsche, Liv (2018). Towards advanced retrievals of plant transpiration using sun-induced chlorophyll fluorescence: first considerations. In: IGARSS 2018 (IEEE International Geoscience and Remote Sensing Symposium), Valencia (E), 22 July 2018 - 27 July 2018, 5983-5986.

Abstract

Reliable information about plant transpiration (T) is essential to advance understanding of various interactions and feedbacks across Earth spheres and eventually facilitate their predictions. Estimating T at larger scales is particularly challenged by the difficulty to constrain the biological control on T (i.e. stomatal conductance), while existing approaches based on potential rather than actual photosynthesis are less reliable than required. New Earth observation approaches such as measurements of sun induced chlorophyll fluorescence (SIF), the most direct observable of ecosystem photosynthesis, opens new perspectives to advance estimates of T. This contribution aims to sensitize for variability of SIF-T relationships across species and in dependency on environmental conditions. We use the combined energy balance and radiative transfer model SCOPE to assess relationships between SIF and T in dependency on relevant environmental and plant specific variables. Our results provide important insight to further define SIF based approaches for advanced estimates of T.

Abstract

Reliable information about plant transpiration (T) is essential to advance understanding of various interactions and feedbacks across Earth spheres and eventually facilitate their predictions. Estimating T at larger scales is particularly challenged by the difficulty to constrain the biological control on T (i.e. stomatal conductance), while existing approaches based on potential rather than actual photosynthesis are less reliable than required. New Earth observation approaches such as measurements of sun induced chlorophyll fluorescence (SIF), the most direct observable of ecosystem photosynthesis, opens new perspectives to advance estimates of T. This contribution aims to sensitize for variability of SIF-T relationships across species and in dependency on environmental conditions. We use the combined energy balance and radiative transfer model SCOPE to assess relationships between SIF and T in dependency on relevant environmental and plant specific variables. Our results provide important insight to further define SIF based approaches for advanced estimates of T.

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Additional indexing

Item Type:Conference or Workshop Item (Paper), refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Geography
Dewey Decimal Classification:910 Geography & travel
Language:English
Event End Date:27 July 2018
Deposited On:04 Jan 2019 17:15
Last Modified:04 Jan 2019 19:30
Publisher:Institute of Electrical and Electronics Engineers
Series Name:IEEE International Geoscience and Remote Sensing Symposium Proceedings
ISSN:2153-6996
ISBN:978-1-5386-7150-4
OA Status:Closed
Publisher DOI:https://doi.org/10.1109/igarss.2018.8518974

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