期刊
REMOTE SENSING
卷 11, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/rs11080927
关键词
sun-induced fluorescence; spectroradiometer; spectrometer; vegetation; radiance; reflectance; remote sensing; FLEX
类别
资金
- COST (European Cooperation in Science and Technology) - European Union's H2020 Marie Sklodowska-Curie individual fellowship [701815]
- Generalitat Valenciana [APOSTD/2018/162]
- 'Fondo Social Europeo - AVANFLEX project (Advanced Products for the FLEX mission) [ESP2016-79503-C2-1-P]
- Ministry of Economy and Competitiveness, Spain [4500058116, 4500058229]
- Centre National d'Etudes Spatiales (CNES), France
- Australian Research Council [FT160100477]
- UK NERC/NCEO through the Field Spectroscopy Facility at GeoSciences - European Union [795299]
- University of Zurich Priority Programme on Global Change and Biodiversity (URPP GCB)
- MetEOC project in the frameworks of EMRP
- European Union
- European Space Agency ESA in the framework of field campaigns [4000107143/12/NL/FF/If CCN3]
- ESA [RFP/3-15477/18/NL/NA]
- EnMAP project MoReDEHESHyReS Modelling Responses of Dehesas with Hyperspectral Remote Sensing [50EE1621]
- German Aerospace Center (DLR)
- (German Federal Ministry of Economic Affairs and Energy)
- Alexander von Humboldt Foundation via Max-Planck Prize
- NERC [fsf010001] Funding Source: UKRI
- Australian Research Council [FT160100477] Funding Source: Australian Research Council
- Marie Curie Actions (MSCA) [701815, 795299] Funding Source: Marie Curie Actions (MSCA)
Imaging and non-imaging spectroscopy employed in the field and from aircraft is frequently used to assess biochemical, structural, and functional plant traits, as well as their dynamics in an environmental matrix. With the increasing availability of high-resolution spectroradiometers, it has become feasible to measure fine spectral features, such as those needed to estimate sun-induced chlorophyll fluorescence (F), which is a signal related to the photosynthetic process of plants. The measurement of F requires highly accurate and precise radiance measurements in combination with very sophisticated measurement protocols. Additionally, because F has a highly dynamic nature (compared with other vegetation information derived from spectral data) and low signal intensity, several environmental, physiological, and experimental aspects have to be considered during signal acquisition and are key for its reliable interpretation. The European Cooperation in Science and Technology (COST) Action ES1309 OPTIMISE has produced three articles addressing the main challenges in the field of F measurements. In this paper, which is the second of three, we review approaches that are available to measure F from the leaf to the canopy scale using ground-based and airborne platforms. We put specific emphasis on instrumental aspects, measurement setups, protocols, quality checks, and data processing strategies. Furthermore, we review existing techniques that account for atmospheric influences on F retrieval, address spatial scaling effects, and assess quality checks and the metadata and ancillary data required to reliably interpret retrieved F signals.
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