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| Loubet, B.; Jarosz, N.; Saint-Jean, S.; Huber, L.. |
| A simple method for measuring the settling velocity (V s) distribution of pollen and spores 30–100 μm in diameter is detailed and evaluated. The method is called the ‘settling tower' and consists in taking sequential pictures of particles falling under gravity in calm air. The scene is illuminated by a cold light source, while a camera takes 15 pictures per second. Between 20,000 and 100,000 images are analysed to obtain the distribution of V s for a given set of particles. The method was validated using two standard particles with mean diameters of 68 and 108 μm, respectively, as well as Lycopodium spores, with a mean diameter of 35 μm. For each set of particles, the theoretical V s distribution was estimated from the particle diameter distribution and... |
| Tipo: Journal Article |
Palavras-chave: VITESSE DE CHUTE; SPORE; PARTICULE BIOTIQUE; GRAVITE; ANALYSE D'IMAGE FALLING SPEED; LYCOPODIUM SPORES; MAIZE POLLEN; PARTICLE STANDARDS; PARTICLE TRACKING. |
| Ano: 2007 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2007c5ea4574&uri=/notices/prodinra1/2010/09/ |
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| Eiden, M.; van der Linden, S.; Schween, J.H.; Gerbig, C.; Neininger, B.; Brunet, Y.; Jarosz, N.; Traullé, O.; Geiss, H.; Rascher, U.. |
| The Carbo Europe Regional Experiment Strategy (CERES), conducted between May and June 2005, aims to determine a spatiallyresolved regional balance of carbon dioxide fluxes using different methodological approaches bundled within an internationalframework. In this study we elucidated several meteorological and physiological parameters determining plant mediated exchangeprocesses using airborne hyperspectral reflectance measurements in synopsis with meteorological information like eddy fluxcovariance data. We used an airborne hyperspectral system to record spatial and temporal transects of vegetated areas surroundingflux tower sites in the Bordeaux / Landes Region (France). Alongside hyperspectral measurements a comprehensive range ofmeteorological and... |
| Tipo: Conference Proceedings |
Palavras-chave: REMOTE SENSING; CERES; VEGETATION; PHOTOSYNTHESIS; EDDY COVARIANCE; HYPERSPECTRAL REFLECTANCE; CHLOROPHYLL FLUORESCENCE; CANOPY PHOTOSYNTHESIS. |
| Ano: 2007 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2009b05f19d6&uri=/notices/prodinra1/2011/05/ |
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