First observations of global and seasonal terrestrial chlorophyll fluorescence from space
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Open Access
- 8 March 2011
- journal article
- Published by Copernicus GmbH in Biogeosciences (online)
- Vol. 8 (3), 637-651
- https://doi.org/10.5194/bg-8-637-2011
Abstract
Remote sensing of terrestrial vegetation fluorescence from space is of interest because it can potentially provide global coverage of the functional status of vegetation. For example, fluorescence observations may provide a means to detect vegetation stress before chlorophyll reductions take place. Although there have been many measurements of fluorescence from ground- and airborne-based instruments, there has been scant information available from satellites. In this work, we use high-spectral resolution data from the Thermal And Near-infrared Sensor for carbon Observation – Fourier Transform Spectrometer (TANSO-FTS) on the Japanese Greenhouse gases Observing SATellite (GOSAT) that is in a sun-synchronous orbit with an equator crossing time near 13:00 LT. We use filling-in of the potassium (K) I solar Fraunhofer line near 770 nm to derive chlorophyll fluorescence and related parameters such as the fluorescence yield at that wavelength. We map these parameters globally for two months (July and December 2009) and show a full seasonal cycle for several different locations, including two in the Amazonia region. We also compare the derived fluorescence information with that provided by the MODIS Enhanced Vegetation Index (EVI). These comparisons show that for several areas these two indices exhibit different seasonality and/or relative intensity variations, and that changes in fluorescence frequently lead those seen in the EVI for those regions. The derived fluorescence therefore provides information that is related to, but independent of the reflectance.Keywords
This publication has 35 references indexed in Scilit:
- Disentangling chlorophyll fluorescence from atmospheric scattering effects in O2A-band spectra of reflected sun-lightGeophysical Research Letters, 2011
- An improved high-resolution solar reference spectrum for earth's atmosphere measurements in the ultraviolet, visible, and near infraredJournal of Quantitative Spectroscopy and Radiative Transfer, 2010
- Remote sensing of sun‐induced fluorescence to improve modeling of diurnal courses of gross primary production (GPP)Global Change Biology, 2009
- Contribution of chlorophyll fluorescence to the apparent vegetation reflectanceScience of The Total Environment, 2008
- Estimation of solar‐induced vegetation fluorescence from space measurementsGeophysical Research Letters, 2007
- Algorithm for NO/sub 2/ vertical column retrieval from the ozone monitoring instrumentIEEE Transactions on Geoscience and Remote Sensing, 2006
- A MODIS-derived photochemical reflectance index to detect inter-annual variations in the photosynthetic light-use efficiency of a boreal deciduous forestRemote Sensing of Environment, 2005
- Undersampling correction for array detector-based satellite spectrometersApplied Optics, 2005
- Fluorescence sensing systems: In vivo detection of biophysical variations in field corn due to nitrogen supplyRemote Sensing of Environment, 2003
- On the Correlatedk-Distribution Method for Radiative Transfer in Nonhomogeneous AtmospheresJournal of the Atmospheric Sciences, 1992