SIF

In an article published in the journal Remote Sensing of Environment, researchers combined airborne solar-induced chlorophyll fluorescence SIF data with ...

This platform for SIF signal harmonization allowed for a more thorough comprehension of the temporal and spatial GPP patterns. To achieve harmonized SIF products across platforms, researchers examined the impact of equipment, retrieval techniques, and atmospheric adjustment on SIF. In this work, researchers used fixed and mobile platforms to compare aerial with contemporaneous ground SIF measurements in a soybean field in Nebraska, USA. The Kestrel imaging spectrometer has a hyperspectral resolution, covering the wavelength range of 400–1000 nm with a 2.4 nm spectral resolution. Similar concerns exist about the proportion of the SIF signal regulated by structure and radiation absorption as opposed to physiology through photosynthetic downregulation. However, several issues about what SIF reflects and whether it offers a consistent measure of photosynthesis across geographical scales and vegetation types remain unanswered due to the narrow temporal and spatial dimensions of these satellite SIF outputs.