Adrián Moncholí Estornell- PostDoc Position at University of Valencia
Adrián Moncholí Estornell
- PostDoc Position at University of Valencia
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13
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Publications (13)
There is a consensus on the role of protein conformational changes within the photosynthetic antenna that alter the spectral properties of the embedded pigments during regulated heat dissipation, but despite this, the molecular mechanisms involved are still poorly understood. The mechanisms, associated with the quenching of excessive energy, are ho...
Early stress detection of crops requires a thorough understanding of the signals showing the very first symptoms of the alterations in the photosynthetic light reactions. Detection of the activation of the regulated heat dissipation mechanism is crucial to complement passively induced fluorescence to resolve ambuiguities in energy partitioning.
Usi...
Solar-induced chlorophyll fluorescence (SIF) is closely related to plant photosynthetic activity and has been used in different studies as a proxy for vegetation health status. However, in order to use SIF as a relevant indicator of plant physiological stress, it is necessary to accurately quantify the amount of light absorbed by the photosynthetic...
With the upcoming Fluorescence Explorer (FLEX) satellite mission from the European Space Agency, vegetation fluorescence (650–780 nm) will become available at 300x300 m resolution. Calibration and validation strategies of the fluorescence (F) signal remain however challenging, due to (1) the radiometric subtlety of the signal, (2) the multiple enta...
En este trabajo se presentan las primeras imágenes del producto de fluorescencia de la vegetación del nuevo sensor aeroportado Hyperspec-CFL del Área de Sistemas de Teledetección del INTA, adquiridas en la campaña aeroportada y de campo CalValFLEX en Barrax (Albacete). En esta campaña, se han optimizado protocolos y probado nueva instrumentación pa...
In this work the first Sun induced fluorescence (SIF) product processed with the new INTA`s airborne sensor Hyperspec-CFL, with the imagery acquired in the CalValFLEX airborne and ground-based campaign Barrax (Albacete) is presented. In this campaign, protocols and new instrumentation for low uncertainty SIF measurements were tested for the calibra...
In this study, first the uncertainty of each measurements system was estimated by comparing the measured irradiance with the modelled irradiance generated using the radiative transfer model libRadtran. Secondly, the instrument uncertainty was propagated to estimate the true reflectance and fluorescence retrieval error. Additionally, the retrieved p...
Current rapid technological improvement in optical radiometric instrumentation provides an opportunity to develop innovative measurements protocols where the remote quantification of the plant physiological status can be determined with higher accuracy. In this study, the leaf and canopy reflectance variability in the PRI spectral region (i.e., 500...
Due to emerging high spectral resolution, remote sensing techniques and ongoing developments to retrieve the
spectrally resolved vegetation fluorescence spectrum from several scales, the light reactions of photosynthesis are
receiving a boost of attention for the monitoring of the Earth's carbon balance. Sensor-retrieved vegetation fluorescence
(fr...
The capability to measure the sun-induced chlorophyll fluorescence (SIF) by remote sensing groups has been recently reinforced with the selection of FLuorescence EXplorer (FLEX) as the next Earth Explorer mission by the European Space Agency (ESA). The aim of this work is to improve the knowledge about the sensitivity of Fraunhofer Line Depth (FLD)...
To improve the reliability of spectral libraries acquired by field spectroscopy, the uncertainty of the spectral reflectance measured must be estimated and reported, taken into account as many important sources of uncertainty as possible. This work presents the initial approach to establish a complete model of uncertainty of field spectroscopy meas...
