Towards Advanced Retrievals of Plant Transpiration Using Sun-Induced Chlorophyll Fluorescence: First Considerations
| Autor: | Alexander Damm, Sebastian Roethlin, Liv Fritsche |
|---|---|
| Přispěvatelé: | University of Zurich |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Earth observation Stomatal conductance 010504 meteorology & atmospheric sciences 1900 General Earth and Planetary Sciences Energy balance Atmospheric model Atmospheric sciences Photosynthesis 01 natural sciences 10122 Institute of Geography Atmospheric radiative transfer codes 1706 Computer Science Applications Environmental science 910 Geography & travel Chlorophyll fluorescence 010606 plant biology & botany 0105 earth and related environmental sciences Transpiration |
| Zdroj: | IGARSS |
| DOI: | 10.1109/igarss.2018.8518974 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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