| Title: | Vegetation responses to climate extremes recorded by remotely sensed atmospheric formaldehyde |
| Author(s): | Morfopoulos C; Muller JF; Stavrakou T; Bauwens M; De Smedt I; Friedlingstein P; Prentice IC; Regnier P; |
| Address: | "Department of Life Sciences, Imperial College London, Silwood Park, UK. Department of Geoscience, Environment & Society-BGEOSYS, Universite Libre de Bruxelles, Brussels, Belgium. Royal Belgian Institute for Space Aeronomy, Brussels, Belgium. College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, UK. Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing, China. Department of Biological Sciences, Macquarie University, North Ryde, New South Wales, Australia" |
| ISSN/ISBN: | 1365-2486 (Electronic) 1354-1013 (Print) 1354-1013 (Linking) |
| Abstract: | "Accurate monitoring of vegetation stress is required for better modelling and forecasting of primary production, in a world where heatwaves and droughts are expected to become increasingly prevalent. Variability in formaldehyde (HCHO) concentrations in the troposphere is dominated by local emissions of short-lived biogenic (BVOC) and pyrogenic volatile organic compounds. BVOCs are emitted by plants in a rapid protective response to abiotic stress, mediated by the energetic status of leaves (the excess of reducing power when photosynthetic light and dark reactions are decoupled, as occurs when stomata close in response to water stress). Emissions also increase exponentially with leaf temperature. New analytical methods for the detection of spatiotemporally contiguous extremes in remote-sensing data are applied here to satellite-derived atmospheric HCHO columns. BVOC emissions are shown to play a central role in the formation of the largest positive HCHO anomalies. Although vegetation stress can be captured by various remotely sensed quantities, spaceborne HCHO emerges as the most consistent recorder of vegetation responses to the largest climate extremes, especially in forested regions" |
| Keywords: | *Climate Droughts Forests Formaldehyde *Volatile Organic Compounds atmospheric remote sensing climate extremes photosynthesis stress vegetation volatile organic compounds; |
| Notes: | "MedlineMorfopoulos, Catherine Muller, Jean-Francois Stavrakou, Trissevgeni Bauwens, Maite De Smedt, Isabelle Friedlingstein, Pierre Prentice, Iain Colin Regnier, Pierre eng England 2021/09/13 Glob Chang Biol. 2022 Mar; 28(5):1809-1822. doi: 10.1111/gcb.15880. Epub 2021 Sep 22" |
